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KMID : 0380619810130010020
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Korean Journal of Food Science and Technology
1981 Volume.13 No. 1 p.20 ~ p.24
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A Study on the Neoasozine Residues in Rice Grain by Neutron Activation Method
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이서래/Lee, Su Rae
김용화/이군자/Kim, Yong Hwa/Lee, Koon Ja
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Abstract
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Residues of neoasozine in rice grain were determined by neutron activation and colorimetric techniques. Twice application of the chemical before flowering did not lead to any increased residue level while 4-times application resulted in significant increase in the residue level up to 0.54-0.75 ㎎ As₂O₃/㎏. The partition ratio of arsenic residues into polished rice grain and bran was 73 : 27 in 100% polishing while most of the residues in the bran was transferred to oil cake fraction during solvent extraction, reaching up to 2.9 ㎎ As₂O₃/㎏. The neutron activation technique was advantageous because of its high sensitivity and the smaller sample amounts required for analysis.
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