YELLOW RAIN-ANALYSIS EVALUATION OF UNMILLED WHITE RICE

• Document Type: FOIA
• Collection: FOIA Collection
• Document Number (FOIA) /ESDN (CREST): 00037502
• Release Decision: RIFPUB
• Original Classification: U
• Document Page Count: 2
• Document Creation Date: December 28, 2022
• Document Release Date: September 26, 2017
• Case Number: F-2012-01432
• Publication Date: October 29, 1984

Approved for Release: 2015/01/05 000037502
A lytical Research Divisioi
Research Directorate
29 Oct 84
-
Analysis/Evaluation of Vnmilled White Rice
A shipment designated 10027SSSS was received by the
Analytical Research Division from ISTC on 15 December 1983.
The sample was also identified with the number LA
831123-7DB. The sample conflated of two sheaves of unmilled
white rice (Figure 1) From a typical farming area in
Southeast Asia. Information concerning the sample indicated
It was a reference sample.
A vapor sample withdrawn from within the Mylar beg
containing the rice sheaves was subjected to analysis by gas
chromatography/mass spectrometry (GC/MS). Several grains of
rice were leached In chloroform. Several others were
leached In a 1:1 mixture of methanol:water. The solvent
soluble materials were analyzed by gas chromatography/mass
spectrometry, ion chromatography (1C), thin layer
chromatography (TLC), and infrared spectrometry(IR).
The chloroform solubIes gave no definitive GC/MS
spectra. No detectable components were separated by TLC.
IC separated no ions of interest. Derivatization with
negative ion chemical ionization MS detection was negative
for trichothecenes. IR spectra identified only the presence
of aliphatic hydrocarbons, probably as cellulose.
Conclusions
No evidence of any known CW agents, agent degradation
products, or trichothecenes was detected. The sample
appears to be innocuous, and thus provides an excellent
baseline for similar suspect samples.
Classifi CIA
eciassify: CADE
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pproved for Release: 2015/01/05 000037502