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  • Title: [Study on residue analysis method of imidacloprid in Ephedrae sinica].
    Author: Chen MY, Chen J, Xue J, Yu J, Cheng HZ.
    Journal: Zhongguo Zhong Yao Za Zhi; 2007 Apr; 32(8):675-7. PubMed ID: 17608216.
    Abstract:
    OBJECTIVE: To establish residue analysis method of imidacloprid in Ephedra sinica by HPLC. METHOD: Imidacloprid was extracted with dichloromethane, cleaned up with chromatography column, then separated on Spherisorb C18 column by using Methanol-water (20:80), detected at 270 nm. RESULT AND CONCLUSION: The limit of detection (LOD) and limit quantification (LOQ) were 0.4 x 10(-9) g and 0.02 mg x kg(-1), mean recovery and related standard deviation (RSD) were 85.37%-90.65% and 2.23%-3.45%. It is concluded that the method could satisfy the pesticide residue analysis demands in sensitivity, accuracy and precision.
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