SCIENTIFIC ABSTRACT KUZNETSOV, V. I. - KUZNETSOV, V. I.

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• Collection: Scientific Abstracts
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• Original Classification: S
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• Document Creation Date: November 2, 2016
• Document Release Date: June 20, 2000
• Sequence Number: 9
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

-AUM.1 UL'YXijVAYA, Ye. :3.
"Radiation-Kinetic Determination of Polonium"
submitted at the Conference on Kinetic Hethads of Analysis, Ivanovo,
14-16 June 1960
So: Izventiya Vysshikh Uchabnykh Zavedeniy SSSR, Khimiya i Khimicheskaya
Tachnologiya, Vol III, No 6 Ivanovo, 19600 pages 1113-1116.

KUZNITSIOV. AKDIDVA, T.G.
Organic coprooipitantse ftrt 13: Co;reolpitatlon of tatravalent
plutonium. Hadiokhimlia 2 n0-3:357-363 160. (KM 13110)
(Plutonium compounds)

KUZMSOV, V.I. - AJCIXOVA, To Go
Organic coprocipitante* Part 14t Isproved method of copreci-
pitating uranium from natural waters~*Radlokhimila 2 no.4:426-
430 160. (KM 1319)
(Uranium) (Precipitation (chemistry)) '

S11861601002100610091026
A051A129
AUTHORS: Kuznetaov,,V$-I.j Savvin, S,. &
TITLE: The extraotion-photometrio-method for the determination of
uranium with areenazo III
PERIODICAL: Radiokhimiya, v. 2, no. 6, ig6o, 682 - 686
TOM The authors have shown that under certain conditions the Uor
complexes with reagents of the arsenazo group.oan be extracted and photometry
is possible directly in the organic phase without reextraotion. The determi-
nation of microquantities of uranium can thus, be carried out simultaneously
with its separation from most of the other elements. The suggested method 1 15
based on the extraction of the diphenylguanidine aalt of the Uq-areenazo III
complex with butyl alcohol from a solution saturated with complex III.and by
its subsequent photometry In the extract at 7t a 660 mU. The method is said
to enable one to determine 1 - 50 of uranium in combination with the simulta-
neous separation from other elements. Phosphates, fluorides, sulfates, Fe,
Al and other.elemento do not Interfere. In order to extract most of the ele-
Card 1/3

s11861601002100610091026
The extraction-photometrIc method for A051/A129
ments In addition to the diphenylguanidine salts, it is necessary to introduce
certain anions into the solution, such as mono- or tri-ohloroacetates, the role
of the latter being the compensation of the excess positive charge of the ele-
ment forming part of the complex, if its valenoy is 2. Elements forming two-
-charge cations at pH - 3 in the presence of complexon III with arsenazo III do
not interact. The working method is described as follows: A few milligrams of
the investigated substance asaumingly containing 1 to 50T of uranium are placed
into a test tube and decomposed according to a method corresponding to the min-
eral composition of the sample and ensuring complete dissolution of uranium.
For a thoroughly ground sample this is accomplished by boiling with HCl + H202
or with HC1+ HN03' Without filtering off the non-dissolved part and placing
the teat tube in a boiling bath, the solution is evaporated until dry, passing
air through, and the residue in processed with 2.0 ml of 0.05n HC1. 2.5 ml of
a 5 %-solution of disodium salt of complexon III is introduced. 1.00 ml of a
0.5 % aqueous solution of arsenazo III is added, 0.5 ml of a 20 %-solution of
diphenylguanidine chloride and 5 ml of butyl alcohol are also added. This in
extracted, well shaken, and part of the upper colored layer is removed with a
pipette and transferred to a 10 mm ouvette. The optical density Is measured
Card 2/3

sll861601002100610091026
The extraotion-photometric method for .... A05iA129
against water on a spectrophotometer at 660 mAor on a photocolorimeter with a
red light filter. The uranium oontent is determined from a calibration ourve,
which in plotted in the name way. Several practical suggestions for improving
the method are listed. There are 2 figures, 1 table and 14 references: 9 Soviet-
-bloc and 5 non-Soviet-bloo. The references to the four most recent English-langu-
age publications read as follows: J. Clinch, M. Guy, Analist, 82, 80, 1957,
J. H. John, F. Will, R. A. Black, Analy-to Chem., 25, 8, 1200, 1953; T. S. West,
Chem. Age. 80, 943, 19581 P. C. Cates, R. Laran, R.E. Williams, Th. F. Moore,
J. Am. Chem. Boo., 75, 9, 2212, 1953.
SUBMITTED: Februar7 6, 1960.
Card 3/3

150)
JAUTHORt
ITITLE:
S/026/60/000/05/026/068
D034/DO07
Kuznetsov, V.I.
The Greatest Researcher Into Polymer Synthesis.On the 100th
Birthday of A.Ye.Favorskiy
JPERIODICAL: Prir*oda, 1960, Nr 5o PP 83-84 (USSR)
ABSTRACTs This article is written in commemoration of the chemist A.Ye.
Favorskiy (1860-1945). The article mentions some of his fol-
lowers, the academicians S.V.Lebedev, I.W.Nazarov, A.Ye.Poray~
Koshits, and Corresponding Member of the AS USSR S.E.Danilov.
There is 1 photograph.
Card 1/1

S/076J60/005/06/25/030
B004/BO-~4
AUTHORS: Kuzneteov, V. I., Fan Min-e
TITLE: Extraotlon of Thorium and Zirconium In the Form of
Chelate Compounds ~
PERIODICAL: Zhurnal neorganicheskoy khimJ.iv 1960, Vol. 5, go. 6v
pp. 1375 - 1382
TEXT: The authors describe the structure of organic compounde suitad for
the extraction of Th and ZrD and point out that this process '14 compli-
cated. by the formation of polymeric hydroxy-oxo I.Dns. ThIs is avoided by
the formation of complex compounds in strongly asid media. Compounds
containing several nitro groups are suited for this purpose. Such com--
pounds can be synthesized more easily than other extraction solvents sug--
gasted so far. Sixteen compounds are enumerated (Table 1)0 which were ob-
tainod by azo binding of the diazonium of pioramic, a,~id .7,r dinitro-
aniline with P-naphthol, salicylic aoid, 8-hydroxyqufnolin-i, a-vid other
phenols. By means of these compounds dissolved in nyolohex&ni~ It is pos-
sible to extract Th quantitatively at pH > 1.5 to 2-5- Ziri.-onium is
Card 1/2

Extraction of Thorium and Zirconium in the
Form of Chelate Compounds
8/078/60/005/06/25/030
B004/BO14
quantitatively extracted at PH > 3 by means ofoyclohexane solutiona of
azo compounds of the diazonium of picramic acid with P-naphtholl~
5-bromo-8-hydroxyquinolineg or 2,49.:.dinitro-4".-.hydroxyazobenzsne.-3",Oa,-:-
boxylic. acid* Table 2 lists the pH values at which the varicus compounds
extract 50% of the quantity of Th or Zr that Is extracted at optimum pH.
The reagents were used in a ratio of 10 molecules to I Th- or Zr atoma
Experimental results obtained with 4 : I are shown In Table 3. Figs. 1-4
show the Influenoe, of pH on the extraction of Th and Zr. The synthesis
of the sixteen compounds is described. There are 4 figures, 3 tables, and
22 references: 6 Sovietv 5 American, 2 British,, 3 German, 4 Swedishp
I Swissy and I Czech.
ASSOCIATION: Institut geokhimii I. analitloheakoy khimii im.
V. 1. Vernadskogo Akademii nauk SSSR (Institute of Geo-
ohemis'ta and Analytioj&l Chemistry Imeni V. I. Vernadsk
of the Academy of Soienoes, USSR)
SUBMITTED; JU1Y 109 1959
Card 2/2

21-3200 77250
SOV/89-8-2-15/30
AUTHORS: Kuznetsov, V. I., Akimova, T. G.
TITLE: Pu (IV) Coprecipitation With Organic Coprecipitants.
Letter to the Editor
PERIODICAL: Atomnaya energiya, 1960, Vol 8, Nr 2, pp 148-150 (USSR)
ABSTRACT:
lCard 1/6
Plutonium, like any other element of' the periodic table,
can be coprecipitated by a convenient choice of co-
precipitant. The "Nitrate" Method. In acid solutions
containing nitrate ion, Pu(Iy) forms a typically weakly
ionized complex anion Pu(NO 3)r. Consequently, such Pu
can be precipitated in the form of' salts of this nitrate
anion with precipitates of nitrates of heavy organic
cations; e.g., the butyl ester of rhodamine B. Since
such analogous weakly ionized nitrate anions are roduced
by, besides Puiw), only a few other elements -
ThM, Ce(IV) XeUc IV)'
_7, the above method Is highly s tive.
To coprecipit-ate, one adds to a 200 ml solution of 3 N
HNO 3 containing Pu(IV) approximately 130 9 NH4NO 35 1 gm

Fu (IV) Coprecipitation With Organic
Coprecipitant5. Letter to the Editor
77250
SOV/89-8 2-15/30
phenolphthalein powder (it facilitates the filtration
of the precipitate which has a tendency to stick to
the walls), and 40 ml of a slightly warmed 1% solution
of rhodamine butyl ester. Crimson-colored precipitate,
with entrained Fu is now filtered off and washed with
an approximately 50% solution of NH 4NO3 in approxi-
mately 1.8 N HNO to which one adds sufficient
rhodamine butyl 30'ster to obtain a not tuo large, but
easily noticeable precipitate, which Is then put
together with the paper filter in the crucible. One
adds 2 ml of a saturated solution of (NH4)2 s04 slowly
dries, and ignites, raising the temperature slowly to
5000 C. (If (NH4 )2SO4 is not added, ignition can be
accompanied by flashing.) The residue contains co-
precipitated plutonium. Table 1 presents the degree
of precipitation.
Vard 2/6

Pu (,IV) Coprecipitation With Organic 77250
*Coprecipitants. Letter to the Editor sov/89-8-2-15/30
Table 1. Coprecipitation of' Pu(IV) uaing the
nitrate of rhodamine butyl estev.
VILUY, OF COPPCC PATION OF
%
2. 10"
1.109
I 2.h1'

:2~ 1010 71;; M2
Table 2 contains reijults of' coprecipitation of Pu(iv)
with simultaneous oeparation from other elements.
Card 3/6

Sli"I'M -442 fle-IV
TABLE 2
OrflER CLEMCWTS FREWNT 1copiecc,p"Ar,ow or P.,%
No otier dgmtAtf GM~J 99; 100
Me (1): IJ Nil -K HIP
Alg: GI 1,13; 100, 100; 80
Mv, (11):
4- 1111.. Zoo Ol.. I'll; %161; 0. N1 (MI: 07
.01 101; 103; w
Pera earth elfmo ots
slcl,)
Me (111):
MN11.11,01), .%I-, Cr; Fv 1 2
CA.; 'I'll; 1: (VC.Ij) -4:1
Mf- (IN ): - - - * I - - - - , , ,
Zr: m(miCIl); %'(%()So,)
Ak (%'):
Mv 1); Mo 101,1011,70-11
Caption on next card
W. 85; 93'. 05
87; 55; 54
-
92; W; RX)
86
04; 00

Pu (IV) Coprecipitation With 01,ganic
Coprecipitants. Letter to the Editor
CaptLon to TablP 2-'.
SCV/8-9 -8- -19/30
Table 2. Coprecipitation of' Pu(IV) with o1multaneous
separation from other eleriients.
Coprecipitation of Pu(IV) in Form of' Cyclic Salt a. At apIvapriate.
p1l values Pu(IV) forms soluble cyclic oalta with many
organic reagents containing the sulf'o group. An aqueous
solution of 100 ing of the complex-Corming agent Is added
to 200 ml of an acidified solution containing Pu; the p11
is adjusted to the required value and the solution is
aged for 10-20 mm. After that, with stirrring, one adds
5 to 7 ail of a 1% solution of methyl vijlet or methylene
blue. Precipitate is slowly dried and ignited at approxi-
matelY 5000 C. Starting with a 1:2-109 dilution Of P11(iv)
(0 1 -/ in 200 ml) and pli from I to 11, Pu is coprecipi-
ta~ed to the extent of 95-IOU%, If' one uses arsenazo;
stilbazo, chromotrope 2B, and others. The coprecipita-
tion is, in general, more complete but less selective
Card 5/0 than with the nitrate method. Using this last method

Pu (III) Coprecipitation With Organic
Coprecipitants. Letter to the Eaitor
l
772 5 G
SoV/89-8-2-15/30
at pH aj~proximatelY 5 to 7, one can also coprecipi-
tate Pu III), but the selectivity is Bmaller than
In the Pu(IV) case. There are 2 tables; and 5 ref-
erences, 3 Soviet, 2 U.K. The U.K. references are:
D. Carswell, J. Lawrence, J. lnc~rg. at-A NLIC1, Chem.
11, 69 (1959); J. Brothers, R. Hart *. W. Mathers,
J. Inorg. and Nucl. Chem., 7, 85 11
958).
ISUBMITTED: November 211, 1959
lCard 6/6

1-5-.4ooo.,'16.7100
78~37
sov/89-8-3-22/32
AUTHOR: Seryakova, I. V.
TITLE: Symposium on Extraction Theory. News in Science and
Technology
PERIODICAL: Atomnaya energiya, 1960, Vol 8, Nr 3, pp 269-270 (USSR)
ABSTRACT: The symposium on theory of extraction processes was
held on December 3-4, 1959, at the(institute of
Geochemistry and Analytical Ohemistvy imeni V. I
Vernadskiy As USSR (Institut geokhimii i analiti~heskcy
khimit imeni V. I. Vernadskiy AN SSSR). The aim was to
evaluate the most important problems of the extraction
theory. There were five papers on questions of chemistry
and thermodynamics of extraction equilibria, on the
influence of the nature of extragents and salting-out
agents, on the composition of the extracted compounds
and their Interaction with molecules of water and the
extragent. V. 1. Kuznetsov reported on "The Chemistry
of Extraction Process__e_s_,_"__based on the theory of~Action
Card 1/4 analytical organic reagents. He attempted to compare

Symposium on Extraction Theory. News 78337
in Science and Technology SOV/89-8-3-22/32
the tendency of ions to form extracting compounds with
the quantity z/n of that ton, where z Is the charge
of the ion, and n is the number of atoms in that ion
K. B. Yatsimirskiy and M. M. Senyavin were critical of
such an oversimplified approach. V. V. Fomin presen-
ted a paper on "Extraction Equilibria," In which the
investigated those chemical reactionu in which the
extragent participates in both phases. He notes that
an element during the extraction process need not
lose, its hydrophilic nature. A. A. Lipovskiy and
V. A. Mikhaylov together with the author discussed
the merits of the accepted view of the oxonium mecha-
nism of extraction of elements. The paper by A. V.
Nikolayev, N. M. Sinitsyn, and A. M. Shubina, "Donor-
Acceptor Properties of Extragents," dealt with the
influence of the nature of organic solvent on extrac-
tion. According to their data, an Increase in dipole
moments augments the degree of element extraction.
N. N. Basargin pointed out in the discussion that-In
the case of elements having a tendency to build
Card 2/4 covalent bonds, the result may be just the opposite.

Symposium on Extraction Theory. News
in Science and Technology SOV/89 8-~-22/,,2
V. G. Timoshev discussed the decisive role of donor-
acceptor properties of phosphorus-containing extragent5.
The salting out in extraction processes was investigated
In the paper by 0. Ya. Samoylov and V. 1. Tikhomirov
using statistical inquiry into the thermal motion of
molecules. Basically, the explanation given took into
account the dehydrating properties of salting-out cathion5.
A. A. Nemodruk pointed out during discussion that one
should take into account also the anion concentration
of the salting-out agent and other factors. A. M. Rozen
presented In his paper the use of thermodynamics In
describing the extraction equilibria. It was noted
dqring discussion that many thermodynamic quantities
should be measured In tests at different temperatures.
V. M. Vdovenko, A. K. Babko, D. D. SuglobQv, I. R.
Krichevskiy, and A. A. Chaykhorskiy participated also
in the general discussion. The symposium determined
the main course of future Investigations of the theory
of extracting processes, in particular: to explain the
reasons for the selectivity of the solubility of anor-
Card 3/4 ganic and organic compounds In various solvents; to

Sumposium on Extraction Theory. News 78337
in Science and Technology SOV/89-8-3-22/32
expend the investigations of solvation, and particularly,
hydration of ions and molecules, to study further the
chemism and thermodynamics of extraction equilibria;
and to expand inquiries determining the composition
and nature of the extracting compounds. The symposium
recommended the establishment of a permanent seminar
dealing with the theory of extraction. The basic
materials of this symposium will be published in 196o
by Atomizdat.
Card 4/4

KUZNF,TSOV, V.I.
Mechanism of the aciddecomposition of complex salts. Trudy kom.
anal. khim. 11:13-27 '60. (MIRA 13:10)
1. Institut gookhimii I analiticheekoy khimii im. Y.I.Yernadekogo
(Complex compounds)

KUZNETSOV, V.I.
Mechanism of color revetions between boron and hydrozyanthraquinones.
Trudy kom. anal. khim, lls35-43 160. (MIRA 13tlO)
1. Inatitut gookhimii i analiticheskoy 4imii im. Y.I.Vernadekogo
AN SSSR.
(Bbron compounds) (Anthraquinone)

-RPMS.QT,V,L;. SAVVIN. S#B.
Photometric determination of thorium in monAzitea with arsenazo
Il. Zhur.anala.khim. 15 no.2:175-179 Mr-Ap 160. (MIRA 13:7)
1. Institut gookhimii i analitichaskoy khimii im. V.I.Terr~ulokogo
AN 383R, Moskva.
(Thorium--Aualysis)

KUZNEMV9 V. [Kuznataovg V.I.)
Increasing the sensitivity of the colorimetric methods applied to
inorganic analysis and color reactions. Analele chimie 15 no.2s
188-205 Ap-Je 160. (Ew 9:11)
(Colorimetry)
(Chemistr7, Inorlanic)
(Color reactions

9 Vol*;
Photometrlo determimtion of e=ll amouAts of thorium with
armenaso* 4=&&ns1okhix- 15 no.3t299-303 Yf-je 16o.
OCIBA 13: 7)
1. Institut gookbinii i amliticheskoy khimii in. V.1.
Ternadskogo AN SSSR, Moskva.
(Thorium-Awlysin) (AreavAso)

JUZ Wo.~~znetsovt VolJ; SAVVINt S.B.; MIHAILCV,, V.A. (MikhVlovp
V.A.]
Realizations in the field of the analytio chemistry of uranium,
thorium, and plutonium. Analele chWe 15 no.,4:74-126 O-D 6o.
(Uranium) (Thorium) (Plutonium) (EW 100)

KMNZMV, VO'I.; BOLISHAWA, L.I.
Butyl rhodamine J a new reagent for photometric determinations, and
for the extraction, precipitation and coprocipitation of elements,
Zhure anal* khimo 15 n0,,5:523-327 S-0 060. (MIU 13:10)
lo Vernadaky Institute of.Geochemistry and Analytical Chemistry..
Aoadem~ of Sciences, U*S*S.R. Moscow.
(Rhodamine). bhemic*al tests and reagents)

xuzN=OV, V.I.; NIZOLISMA, I.V.
Photometric determination Of uranjus by the reagent arsenam 4ve
lab. 26 no-31266-269 '60. (MINA 13:6)
1. Institut gookhtmii i analitichaskoy khimii Akademii nauk SSSR.
(Uranium-Analys is )

1,10~1;2160102610121041036
Boll-VD-056
AUTHORS: Kuznetsov, V. Is, Kukisheva, T. 11.
TITLE: Photometric Determination of Uranium by Means of the
Reagent Arsenazo
PERIODICAL: Zavodskaya laboratoriya, 1960, Vol. 26, No. 12, pp. 1344-1346
TEXT: Among the well-known reagents to uranium (VI), arBenazo, which, With
uranium, gives an intensive yellow complex$ is the most sensitive. In the
present paper, a rapid method of determining uranium in substances of
complex composition iu doooribedp which is based upon a single extraction
of uranium by means of methylethyl ketone and the 11otometric recording of
the uranium complex with arsenazo. As extracting aCenta, n-butyl alcohol,
ethyl acetate, methylothyl ketone and cyolohexanone, and as desalinating
agents, ammonium, magnesium, and calcium nitrates of different con-
centrations in 0.5 11 HNO3 were investigated. From saturated Ca(NO 3)2- or
MgCo 3- solutions in 0.5 N HNO 31 uranium is extracted by means of ethyl-
acetate, cyclohexanone, and methylethyl ketone with distribution coefficients
Card 1/3

Photometric Determination of Uranium by Means S1032V601026101210041036
of the Reagent Arsenazo B020/BO56
of 170, 230, and 700. The distribution coefficients for Cu, Al, V(IV), and
Fe(III) vary between 0-03 and 0-14. When using methylethyl ketone, the
concentration coefficient of uranium may be increased to about 23-000,
which is further improved by the introduction of conploxon III into the
solution extracted. Cu, Al, V(IV), Ti, Fe, and Bi do not disturb at a
ratio of U;14e of 1:400, 1000, 1170, 1s80, 1j600, and 12500. Uranyl
arsenazate decomposos immediately under the action of H 202' whereas the
arsenazates of the othor elements, with the exception of vanadium and
partly also of thoriump remain unchanged. Titanium does not turn yellow
with H202 at PH -- 5. The effect produced by a 30-fold excess of zirconium
may be removed by precipitation in form of its phosphate with a pHotp 2.
Orthophosphoric acid in quantities of up to 3 g/l exerts no essential
influence upon the extraction of uranium. During extraction from
0.1-0.2 N HNO3 in the presence of complexon III, a 200-fold excess of
thorium. does not disturb. In the case of beryllium excesses of up to
1 - 200, thy.,,'~ample must be opened up with a mixture of nitric acid and
'4'
hydrofluoric acid, and must be concentrated by evaporation until it dries.
Sulfates, chlorides, phosphates, and fluoriden at concentrations of up to
Card 2/3

Photometric Determination of UraniuL7. by Neans S/032/60/026/012/004/036
of the Reagent Arsenazo B020/B056
5, 15, 3 and 0.5 g1l relative-to free acids do not disturb. The method de-
scribed was checked on several samples, which contained different
quantities of uranium. The results are given in a table. There are 1 table
and 11 referencest 7 Soviet, 2 Japanese, 1 Dutch, and 1 US.
Card 3/3

KUZNETSCV, V.I.z SAVYINg S.B.; M-MAYLOVp V.A.
Progress in the analytical chemistry of uranium, thoriump and
plutoniumo Usp. khIm. 29 no.4%525-567 Ap two., (MIRA 1414)
1. Institut gookhimU i analitioheakoy khimii imeni V.Z.Vernadekogo
AN SSSR.
(Uraniur,-Analysia) (Thorium-Analysis)
(Pl~tonium-Analyais)

KU2N1TSOV, V. I.
- --------------------
Development of studies of monomers for the synthesis of rubber.
Trudy Inst.19t.est.i tekh-301195w220 160, (MIRA 1338)
(Rubber, Artificial)

XUZMSOV, V. I.
Role of Zh#IotsIch's research in the development of the chemistry
of acetylene compounds* Trudy Inst.ist.est.i tekh.30:221-240 16o.
(MIRA 13:8)
(Acetylene)
(lotsich, Zhivoin Illich, 187o-1914)

~~173V, A.P.p otv*red.; ALIKMN, I.P., red.; GELIM, H.E., red.;
KLIHOVAp VPA,# r9do; OV, A.P., red.; (lu 50Y. V.I., red.;
LHVIN9 NeSet MI.; POWAYWYA, ZoI#q rede; red.;
11
TALIROZE, V.L., red.- TSU13MMAN, A.M., red.; SOMYAKIN, F.M., red,;
0
SU7NM. Yu.N., red.; YERMOV, U.S., tekhn.red.
[Conference on organic analysis] Soveshchanie po orgenichaskocu
analizu. Tezisy dokledov. Koakvs. Izd-v'o Hook.univ., 1961. 170 p.
(MIRA 14:4)
1. Soveshchaniye po organichaskomu analizu. 1961.
(Chemistry, Analytieel-Congresses)
(Chemistry, Organic--Congresses)

COV
01
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IN
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Id
ad
A 3i -6.
ti : It
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d~
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51
H
Ila
N-
VA

23881
S/18 61/OC3/001/014/020
A051YA129
AUTHORSt Kuzneteov. V. Savvin, S.B.
TITLEs The sensitive photometric determination of thorium. using the
areenazo-III reagent
PERIODICALt Radiokhimiya, v 3, no 1, 1961, 79-86
TEXTs The authoro recommend a sensitive photometric method for determining
thorium using the arsenazo-III reagent, wher by 0.050rTh can be deteoted.
They show that 10-100-fold quantities of sul;ates, phosphates and other
complex-forming substancos in addition to zirconium and uranium do not inter-
fere with the determination of thorium. An extraction-photometric method is
developed for determining thorium and another method i's suggested for con-
oentrating thorium by oopretipitation in the form of a Th-arsenazo-11I com-
plex on a colorless precipitate formed by diphenylguanidine salt - anthracene
-ct- sulfoaoide. The high stability of areenazo-III complexes is explained
by the non-coplanar nature of the moleiule. Arsenazo-III is said to Include
Card 1/6

23881
The sensitive photometria determination
8/186/61/003/0M /014/020
A051/A129
the same groups as areenazo-I and II (Ref 12, 13, 14). The high sensitivity
of the reaction is combined with a satiefaotary seleativity.
Aso3H Ro rf U203As
Structure of NON NON
areenazo-III 1__/ _ZD
Ho3S~bso 39
Arsenazo-III is synthesized by azo-oombination of diazo- 0- aminophenyl-
arsonic acid with ohromotropio acid adding CaO (Ref 11). It differs from
other reagents by its high sensitivity of reaction and by a lesser effeat
upon the conditions of the environments acidity, sulfate concentration, phos-
phates and other thorium-binding substances. These characteristics of the
reagents are said to be connected with the extremely h VI of th'*
complex compounds formed by arsenazo-III and Th, Zr,
elements, etc. Arsenazo-III forms an intentiomerald-greetioo oring with
thorium (Fig 1). Cations such as Zr, Rf, U , So and Fe III partialli,"
Bi9- U(V1.'- and high concentrations of rare-earth elements affect the complex
Card 2/6

23881
S/i86j6l/OC3/001/014/020
The sensitive photometric determination ... A051/A129
formation of the reageat with thoriump.but these effects can be eliminated
through various chemical reactions. The same principle applies to the anode
effect. The high sensitivit of the color reaction in said to be explained
by the following factorst 1~ the presence of a sharp peak on'the curve of
light-absorption of the areenazo-III-thorium oomplexI 2) a significant shift
of this peak on the curve of light-absorption of the complex as compared to
the reagentf whiah easily eliminate* the light-absorption of the reagent
properl 3) a high stability-of the complex, which enables thorium to become
completely bound to areenaso-111. The concentration of thorium from diluted
solutions carried out by aopreoipitatibn of the diphany1guasidine salt of
the thorium-areenazo-III complex acoompanied by the simultaneous prooipita-
tion of a basey such as the salt of diphonylguenidine with a suitable anion-
sulfate, perohlorate, trichlorat&, aryloulfonate, eta., is comparable to the
method of extraction. The d.4stinctive feature of the given method is the use
of a colorless base (oopreoipitant) instead of an intensively-ciol-ored methyl
violet salt, whioh is an rwbsta~31e to the oub3equent dire'A photometry of the
solution o'btained. The authers point out that arsenazo-III present in the
solution does not pass aotplet6ly into the precipitato (only 20%) in the
Oard 3/6

23881
S/18 61/'003/0C1/014/020
The sensitive photometrio determination A051YA129
case of complete thorium rezovery. The thorium content in a given solution
is determined according to the formial&4
Th (Br 2(ErE
E2_E1
Table 2 lists &xamples of results obtained under the given experimental con-
ditions. Introducing even a simple phonylaso-group into the areenato-I mole-
oule, the stability of the oomplex will increase as oompared to that of
arsenazo-I without this introduatiQu, if the phenylazo-group does not contain
any salt-forming substitutes. Areenazo-III in suitable for a very selective
and sensitive determination of uranium in the tetra-valent state, when its
behavior in similar to that of thorium. There are 3 tables, 4 graphs, I dia-
gram and 20 referenoess 12 Soviet-bloo, 8 non-Soviet-bloo.
Card 4/6

Ths~.sensitive photometric determination ...
Vigure it
Light-absorption of
areenazo-III (1) and
its:thcrium complex (2).~
Coneentrationst
I- arsenazo-111
lo-5x,.Ecl 4n,.
43v~:nn
23881
S/ie 61/003/001/014/020
A051YA129
o.9:jo:5m, Th(NO 4
2.5 id 5m, Hn 4A. 41 Figure 3t Masking thorium and
0
CUvette 10 =1 taken zirconium by oxalio acid.
against water. ... ...
In 25 ml there &rot arsenazo-III
0.5 mg? H2C2*0462H 20-0-4 9- CuVette
Card 5/6'
50 ml,
2L. 665 M , taken against the
reagent.
1- 1-f Th + 1,000,f Zr,
2- 1 Th.
T

23881
S/186/61/003/001/014/020
.The sensitive photometric determination A051/A129
Table 2t Photometric determination of thorium, in diluted solutions with
areenazo-III in combination with ooprecipitation on a colorless
organic oopreoipitant (anthraoene. ct-sulfonate diphenylguani-
dine)
Dilution of thorium. t h o r i m
taken (in-j- found (in -f)
111010 8 10 9.0
1:2*10 8 5-0 4-5
8
It5*10 2.0 1.81 2.5; 1.7
1:1010 1.0 0.9; 1.4; 0.8
A
Card 61~

KUZNE,TSOV, V.1.1 AKIMUVAO T.G.
Organic coprecipitators. Part 15: Coprecipitation of americium*
Radiokbimiia 3 no.61737-742 1610 (MIRA 14:12)
f~mericium)
tPrecipitation(Chemiatry)

~Iiap ~method of determining the relative instability of ccpplex
compounds. Zhur.neorg.khim. 6 no.5tlO42-1049 Yq ,61.
(MIRL 14M
(Complex compounds)

KUZIIZTSOV, V.I.
Significance of J. Berveliual generalizatione in the field of
catalysis. Vop.ist,ost, i tekh, no,11:82-88 161. (MIRA 14,11)
(Catalysis)

KUZNETSOVl V.I.; BASARGINt N.N.
2*7.,Dichloroohromotropic acid, a new reagpnt for the photometric
determination of titanium. Zhur.anal.khim. 16 no-51573i577
S-0 061. MIRA 14:9)
1. Vernadsky 1-ftstituto of Oeochemistry and Analytical Chemistry,
Academy of Sciences UsS.S.R. Moscow.
(Titanium--halysis) Naphthalenedisulfonic acid)

P=~~ JL; BLMM (Bleebta], V.
Factraction of uranyl nitrate by means of mixture of metbVI 9*1
ketone and totrachlorometbans. Coll Cz Chem 26 no.4:1092-1098
Ap 161.
1. Inatitut geolchiali i analiticheakoy khimii in. V. I. Vernadskogo.,
Akademiya, nauk SSSR, Moskva.
(Uranyl nitrate) (Utons) (Methane)

2"497
.8/020/61/137/004/021/031
D1.03~B208
CA A11 /00
AUTHORLP Kuanetsovj Volop and Ul*~anova# Ye. S.
TITLEs L radiation-kinetio method of determining ultrasmall
quantities of polonium
PERIODICAU Doklady Akademii nauk SSSR, v. 137# no- 4, 1961j 869 872
TEXTt The authors use the differences between periodide and iodide ions
which give color reactions of varying brightness in the solid ~h,'ase, to
determine extremely small polonium. quantities (tetravalent, Po .. 0_). The
periodide ions exceed the iodide ions in this respect, This is possible
'by combining four prooessest a) oo-precipitation of poloniuml b) acce-
lerated local radiolysis of iodides initiated by a); c) formation of
periodide anions; and d) color reaction of the solid phase of these
anions with the butyl rhodamine cation (n-butyl eater of rhodamins B (Blth)t
synthesized by L9 I* Bol*shakova). Also at such concentrations of iodides
and butyl rhodamine, which develop the above color reaction (due to for-
mation of a suspension of insoluble iodide of the butyl rhodamine anion)
only to a low extent, the tetravalent polonium will be precipitated in the
Card 1/7

22497
8/020J61/137/004/021/031
A radiation-kinetic method of B103/B208
form of penta- or hexaiodo-polonits of BRh on the nascent microcrystals of
BRh iodide. This local increase of polonium concentration gives rise to
an increased local radiolysis of iodide ions. Subsequentlyp elementary
iodine and also periodide are formed. Periodide renders additional BRh
quantities insoluble, which intensifies the color reaction because BRh-
periodids is now formed. Owing to its miorooryetals, additional polonium
quantities are oo-prooipitated, so that a self-accelerating process occurs*
Simultenecuoly with the increase of the local polonium concentration also
that of the periodide increases in the crystals of BRh periodide6 The ra-
diolysis taking place in the resulting heterogeneous system is more intense
than in a similar homogeneous system. This is of high significance to the
sensitivity and# particularly, to the selectivity of the reaction. Polo-
nium may thus be determined on the background of preponderant quantities of
other cc-emitters. Selectivity of the reaction. Although elements that
form iodide anions, such as Te IV $ Cdg Hgs Bit Sb, and others, and elements
appearing in awther form, esg,, heavy oxygen ions, are capable of simi-
lar reactions, these will be simple,reactions without self-acceleration.
These elements can also be oo-prooipitated with BRh iodide. If radioac-
Card 2/7

8/020/61/137/004/021/031
A radiation-kinetic method of ... MOM
tive isotopes of the afoke-isn'tioned elements are "Present whose radiation
effects a marked radiolysis, of the iodidea$ a similar reedion as in the
case of polonium will result. The sensitivity of the reactions is depend-
ing on the intensity of radiolysis. Sensiti*ity of the reaction& It is the
higher the longer is the time available for radiolysist and the higher are
the concentrations of the iodide in the medium and of"SRh. Above a certain
limit of these concentrations# also the tlank toqt gives a positive reacticn
owing to the fo;rmation of a suspension of BRh-iodide crystals, In order to
have a more'reliable roaotiong substances are introduced which bind ele-'
ment"', iodine'(resoreinol)# To increase the sensitivity-'
V of the readtioAl'
the adthors recommend addition of elementary iodine in'a, small quautityp
Leet such a quantity that the resultant 3Rh periodide crystal-lizes imme-
diately after mixing thi-ingredients. Hereq.th* periodid* should give a
distintt-9"but noi"too intense positive reaction. In this case, the co-,
precipitation of Polonium-will set in at once., Table 1 gives data,,On the
effect of the itiscuss'oedfactors upon the sensitivity of the reaction at
200C. The result was observable after 3 mine The sensitivity for other
polonium isoto'pas is difierent. The authors present an instruction for
Card- 3/7

A radiation-kinetic method of
%61113T/004/021/031
BiO B208
the- rea.otionIi~ ure,polonium soluiions aAd for'plutonium-~oontaining so4
lutione(Tatle 2~8., They point out that the pfooedure described may also be
used for'the development of highly sensitive# radiation-kinetic reactions
for other elements vhose isotopes havi a wifficiintly high OL-activity, and
vhoof ions MV be co4recipitated with.organ'ic co-precipitants. This holds
orm o
for elements that s'lid nitrate complex-anpno (acoorditg to the meo
chanism. nitrate---)Aitrite) and for elements that may be ca"precipitated vitt
organie-perchlorat .an '(Perchlorate --~ohlorate74oaBlly oxidizable organic
perchlorates). These and other combinations-will be later discus .sed.-' The'
present paper Vas read.at the Conference on kinetic Methods,of Analysis,
Ivanovos June 14 - 16t 1960, There aire, 2 tables and 6 referenoess 4 So-
vio,t-bloo'and 2 non-Soviet-bloo.* The reference to the English language
publication reads as follovet Ref. 29.Vlo Xuzneteov, The Application of
Radioactive Isotopes for Developing.New Methods ,'in Anal. Chemistry. Organ.
Co-precipitants4 Into Confo-on Radioipot...in Sai..Research, Paris, 1957.
PRESENTEN November 169 1960 by X.V. Tananayevq Academician
SUBMITTEDa November 14t 1960
Card 4/7

KUZNETSOV,-Vsl., SAVVIN, S.B%
ExtrAction of stained complex compounds fromed by reagents of the
arvenazo-thoron.group. Dokl. AN S$SR 140 no.1:125-128 S-0 '61.
(MIRA 14:9)
1. Institut ge6khimii I analitichaskoy kbimii im. V.I. Vernadekogo.
Prpdstavleno.aicademikom A.P.Vinogrador
OcnPlex compounds) (Arspnazo)

IJDALII*SGVAP F.I.; SAWINO S.B.; VEMODRUKO A.A.; VOVIXGVv YU.P.;
DOMOLYUBSKAYA, T.S.; SIJIYAKOVA) S.I.j BILIMOVICII) G.H.;
SEIMYUKOVA) A.S.; BEMAYEV, Yu.I.; YAXOVLEV, Yu.V.;
VEHODRUK3 A.A.; CINMOVAl M.K.; GUSKVp N.I.; PAIEY, P.N.;
VINOGMOVs A.P., akademik; glav.'red.; ALIMIN, I.P.9
red.; BABKO, A.K.., red.; BUSEV, A.I., red.; VAYNSHTEYII, E.Ye...
red.; YERMAKOV, A.N., red.,&-ffiaXETSU, V I red.; RYABCHIKOV,
D.I., red. toma; TANANAYEV, I.V.# red.; CHFMIIKHOV, Yu.A., red.;
SENYAVIN) M.M... red. toma; VOLYNETS, M.P.j red.; NOVICHKOVA, N.D.,
tekhn. red.; GUSIKOVA, OJI.j tekhn. red.
(Analytical chemistry of uranium] Analiticheakaia khimiia urana.
Moskva, Izd-vo Akad.nauk SSSR, 1962. 430 p. (MIRA .15:7)
1. Akademiya nauk SSSR. Inotitut geokbimii i analiticheskoy
khimii.
(Uranium~--Analysis)

,KUMTSOV V.I.
N Chemi2al mechanism of extriction piozesses, Ekstr., teoropprimep
app. no.20-18 162. (MM 1589)
Mc'taction (Clhemirtcy))
I
M

S/83o/62/000/001/003/012
E071/E192.
AUTHORS: Kuziietsov, V.I., and Seryakova, I.V.
.TITLE: On the'mechanism of extraction of elements with
oxygen-containing'solvent8
SOURCE: Ekstraktsiya; teoriya, primeneniye, apparatura.
Ed. by A.P. Zefirov and M.M. Senyavin.
Moscqw, Gosatomizdat, 1962. 104-111
TEXT: Using as an example the extraction of chloride anion of
iron (III) with dimethylpyrone and cyclohexanine, the authors
confirmed the oxonium inechaniBm of extraction of elements. Iron
was determined radiometrically using Fe59 *and at higher concentra--
tion photometrically with sulphosalicylic acid, the concentration
of chloride ion by the Folgard method,'and of cyclohexanone.by.the
hydroxylamine method. The experimental procedure consisted of
shaking a solution of iron containing a given amount of hydrochloric
acid and lithium chloride (total 1 ml) with a solution of the
extracting agent in chloroform or toluene (1 ml) and subsequent
.-re-extraction of iron from the organic phase with water. By
comparing the increase in the bolubility of cyclohexanone in the
Card 1/3

On the mechanism of'extraction of ... S/830/62/000/001/003/012
L071/1,:192
aqueous phase with the degree of extractability of iron, it was
found that the more extracting agent transferred into the acid
phase, the higher was the degree of iron extraction. The limit of
this process was determined by the fraction of dissolved cyclo-
hexanone which is not the same for various conditions. The waximurn
degree of extraction and the waximum solubility of cyclohexanone
were shifted towards higher acid concentrations in the aqueous
phase. Such relationship between the degree of extraction of iron
and the transfer of the extracting agent into ihe aqueous phaa
was explained by the oxonium cations, forming during the 'inter-
action between the extracting agent and acid, and participating in
the extraction. on extraction of iron, from solutions practically
free from hydrochloric acid but containing a high concentration of
lithium chloride, iron was extracted by oxygen containing solvents
in the form of LiF(--CI4. When a part of the lithium chloride is
replaced by hydrochloric acid (with the retention-of chloride ion
concentration), ox;nium cation of the extracting agent is formed
and part of the iro,i is extracted in the form of oxoniunj salt.
This was confirmed ljy determining the dependence of the Li/Fe
.Card 2/3
t

On the mechanism of extraction S/63o/62/000/001/003/012
E071/E192
ratio in the extract on the acidity of the starting solution.
A comparison of the dependence of the extracting ability of
dimethylpyrone and diethylether on 'the acidity of the aqueous
phase indicated that oxygen in dimethylpyrQne possessed a higher
ability to coordination as it began to extrnct iron well at a
lower acid concentration. It was concluded that with oxygen
containing mubstances iron can be extracted in the form of oxonium
salts. Thin is possible at such a'cidit~, at which the extracting
agent used is able to form the necessary concentration of oxonium
cations. Of the extracting agents investigated, dimethylpyrone
formed oxonium salts at the lowest acidity.
There are 4 figures and I table.
Card 3/3

K1171411~1.18011. V.I.; SI.'.Rvj,YOv&6UiY,
I
qz:: ---------
Extraction separation of vanadium and uranium. Ekatr.; teoro.,
prim.,,app. no,2!227-234 162. (MIRA 15:9) '
(Uranium--Analysis) (Vanadium-Analysis)
(Extraction (Chefaistry))

KUZUETS,,O.V -V.I.; ROZINA, D.Sh.
O-Nitrophenylarsonic acid. Motod.poluch.khim.reak.i ---nfi-.
no.4/5t97-100 162.
O-Aminophenylarsonic acid. Ibid.slOO-103 (MTRA 17:4)
1. Vaesoyuznyy nauchno-issledovateliskly institut khimicheskikh
reaktivov i osobo chiatykh khimicheskikh veshchostv.

KUZNETSOV,.Y.I.;-,FAN Kllf.-,E [Fang Ming-$]
Extraction of sirconi= in the presence of weak complexing agents.
Zhur.neorg.khim. 7 no.2:1#22-424 F 162. (MIRA 15:3)
1. Inatitut gookh4m44 i analitichaskoy kb4-44 AN SSSR.
(Zirconium compounds)

KUZMBOV, va.l. [Fang Ming-8]
Extraction of zirconium in the form of complexes formed by organic
reagents with one or two salt-forming groupings. Zhur.neorg.khim.
7 no.2:425-430 F 162. (MM 150)
Is Institut geokUmii i amaiticheakoy kbimii AN SSSR.
(Zirconium compounds)

AUWTNVp V.I.; MARGIN, N.N.
Stability of complexes of trivalent metal ions with substitution
derivatives of salicylic acid. Zhur.noorg.khim. 7 no.4t8l4-821
Ap 162. OGRA 15:4)
1. Inatitut gookhimii i analitichookoy khimii im. V.I.Vernadakogo.
(Complex compounda) (Salicylic acid)

KUZNETSOV, V.I.; GAGARINA, M.I.
Photometrio?determination of 2,4-dichlorophenoxyacetic acid with
butyl rhodamine. Zhur.anal.khim. 17 no.2:235-238 Mr-Ap '62.
(MIRA l5t4)
1. V.I.Vernadsky Institute of Geochemistry and Analytical Ohemistry,
AcadepW of Sciences, U.S.S.R., and Scientific Research Institute
of Fertilizers and Insebtofungicides Moscow.
(Acetic aciO (Rhodamine)
fln

3/075/62/017/004/004/006
1017/1242
AUTHORSs Ku"notjovt T'sIal Baq!%rgin, N.N. and Kukishevaq T.No
TITL2: niAt'i,)n of titaniim in the
Photometric deten
presence of uranium 4sing dichlorochromotropio
acid
PERIODICAM Zhurnal nnalyticheakoy khimii, 17, no. 4, lgk2.9-
457-459
T EXT A. method is proposed for -the determination of traces
of titanium in the precence of large amounts of uranium. The
colorlinetric properties of solutions of uranium and titanium
dichlorochromotropic complexes were studied ja4 various pH's.,The
direct separation is bmsed on the fact that at pH 1-2 titanium
Card 112

t
S/075/62/017/004/004/006
1017/1242
Photometric determination.j.
forms a chAracteriatic red'dbmplex with dichlorochromotropic acid.
The selectivity of the dichlbrochromotropic ac id is based on the
difference in pH's for optimal reactiont the ratio of sensitivities
between the titanium nnd the,uranium complaxing reactionst and the
differences in the absorption sgectras In the determination of
0*01-0.1~4 titanium in :tranium t e experimental error'does not exceed
4~- There are 2 figures and 2 tables,
.AZSOCIATIONi Institut geokhimii i analiticheskoy khimii im. V.I.
Vernadsko6o AN SSSR (Institute of Geochemistry a 'nd
Analyticnl Chemistry* im. V.I. Verinadsky AS USSR)
Moscow
SUBMITTED& September 16, 1961
,!Card 2/2

KUZNETSOVIV I ; DRUYANOV, V.A., red.izd-va; SHMAKOVA, TJL, tekhn.
re~-.'-
(Chemical principles of the extraction-photometric methods
of analysis] Khimichaskie oBnovy ekstraktaionno-
fotometriahookikh metodov analiza. Moskva, Goageoltakhiz-
dato 1963. 41 p. (MIRA 16:4)
(Extraction (Chemistry)) (Photometry)

KUZNETSGV, V.L,.,-, GCHSHKOV, V.V.
organic coprecipitating agents. Part 17.- CopreciPitation
of ursxaum as 8-hydroxyquinolinate vith indifferent
coprecipitating agents., Radiokhimlia 5 no.1:93-97 163.
(MIRA 16:2)
(Uranium compounds)
.(Quinolinol)
(precipitation (Chemistry))

V.I.; Sly, YOVA L. 1. ; F,%N!
Comparative tAudy c)' nome raaoents for U16 ;;hotom,-;trl-c determi-
nation of beryllium. Zhur. ardil. kliir,,.. 18 rio.2:160-165 F 163.
(MRA 17:10)
1. Vernadalcy Inotitute of Gerchemistry and Analytical Chemlstry
Academy of Sciences, U.S.S.R., Moscow.

L 18299-63 '-FCS(f )/EWT(M)/BDS ESD-3 RU
ACCESSION FRo AP3004942! 5/6075/63/618/608/6915/6919
AUTHORS S Kuznoteov, Vs lor CbAo-Ait No Is.
TITLEs Composition of extractable innerQomplex oomoun
ISOURCEs Zhurnal analitiohookoy khim1ij ve 189- noo 89 19'63v~15-919.-
TOPIC TAGS1 piorate #,nionj diphanylgasmidinef Cuq Lag Thp Thl extractable inner
complex compound$ complex salt:
ABSTRACTs Water-insoluble inner complex compounds of simple composition may be
extracted as ouch after solvation by molecules of the solvent. Ho method has
conclusively shown the best extracting inner complex salts of-ouch a oomplex
compositicn. The effeat of C%ClOO- CM COO-and piorate anions on extraction by
chloroform of water-insoluble complexes Armed by Cu, La, Yb and Th with 2-hyd=W..,
naphthalene-