【摘 要】
：
A method for simultaneous determination of residuals of four pesticides, which are simazine, carboxin, diflubenzuron and rotenone, in Chinese green tea was developed.In the proposed method, 2 g green
【机 构】
：
Technical Center for Inspection and Quarantine, Henan Entry-Exit Inspection and Quarantine Bureau, Z
【出 处】
：
第2届大连国际色谱学术报告会、第37届国际高效液相色谱及相关技术会议、第18届全国色谱学术报告会
论文部分内容阅读
A method for simultaneous determination of residuals of four pesticides, which are simazine, carboxin, diflubenzuron and rotenone, in Chinese green tea was developed.In the proposed method, 2 g green tea power was placed in 50 mL centrifuge tube with plug, infiltrated in 8 mL saturated aqueous sodium chloride solution and 10 mL acetonitrile, agitated for 1 min using vortex oscillator, centrifuged 5 min at 4000 r/min.The supernatant solution was agitated 1 min for dispersively cleanup with 800 mg primary secondary amine (PSA) sorbent, 800 mg C18 power, and 600 mg graphitised carbon black powder.
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