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  • Title: [Investigation of organophosphorous insecticides residue in Chinese crude drugs].
    Author: Wu JL, Zhan XP, Zou YH, Chen SF, Lu GZ, Lai FG.
    Journal: Zhongguo Zhong Yao Za Zhi; 2007 May; 32(9):798-800. PubMed ID: 17639977.
    Abstract:
    OBJECTIVE: To study eleven organophosphorus insecticides residuals in four kinds of Chinese crude drugs. METHOD: The organophosphorus insecticides were extracted with dichloromethane and cleaned-up with a mixture of Celite 545-activated carbon. The extracts were analyzed by gas chromatography equipped with a flame photometric detector (FPD). RESULT: Analysis of fortified Chinese crude drug showed that the average recoveries ranged from 77.5% -112.3% at three different levels, the RSDs were below 10% (n = 4). Trace organophosphorous pesticide residues were found in samples of Rhizoma Atractylodis Macrocephalae and Flos Chrysanthemi. CONCLUSION: A method was established for determination multi-residues in Rhizma Atractylodis Macrocephalae, Radix Curcumae, Bulbus Fritillariae Thunbergii and Flos Chrysanthemi. It provides a method for the risk assessment of organophosphorous pesticide in Chinese crude drugs.
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