作者：杨元1, 高玲1, 景露1, 谯斌宗2, 谭颖3
作者单位：1. 成都市疾病预防控制中心, 四川成都 610041;
2. 成都市食品药品检验中心, 四川成都 610045;
3. 简阳市疾病预防控制中心, 四川简阳 641400
关键词：水; 农药残留; 气相色谱/质谱技术; 固相萃取; 有机磷农药; 氨基甲酸酯农药
摘要：
采用固相萃取(SPE)技术,对水样中20种有机磷类、氨基甲酸酯类农药进行提取、净化、浓缩前处理,优选了固相萃取小柱填料及萃取、净化条件。优化了气相色谱/质谱(GC/MS)仪器工作参数,建立了水样中20种农药的SPE-GC/MS分析方法。针对不同农药,本法回收率在90.83%~105.0%之间,测定精密度RSD在3.20%~12.52%之间,SCAN检测模式的检出限在0.000 3 mg/L~0.003 mg/L之间,SIM检测模式的检出限在0.000 2 mg/L~0.002 2 mg/L之间。本法简便、快速、灵敏、可靠性强。
Study on method of organic phosphorus and carbamate pesticides in water using SPE and GC/MS
YANG Yuan1, GAO Ling1, JING Lu1, QIAO Bin-zong2, TAN Ying3
1. Chengdu Center for Disease Control and Prevention, Chengdu 610041, China;
2. Chengdu Testing Center for Food and Drug, Chengdu 610045, China;
3. Jianyang Center for Disease Control and Prevention, Jianyang 641400, China
Abstract: A method for analysis of 20 kinds of organic phosphorus and carbamate pesticides in drinking water using solid phase extraction(SPE) and gas chromatography-mass spectrometry(GC/MS) is suggested. These pesticides had been extracted, purified and pre-concentrated with solid phase extraction(SPE) technology, and the optimal column packing materials, extraction and purification conditions for SPE, and the working parameters of GC-MS were investigated. The experimental results indicate that the spiked recoveries and precision(RSD%) are 90.83%~105.0% and 3.20%~12.52% respectively. The detection limits for Scan and SIM are 0.000 3 mg/L~0.003 mg/L and 0.000 2 mg/L~0.002 2 mg/L. The established method is simple, rapid, sensitive and reliability.
Keywords: Drinking water; Pesticide residues; GC/MS; SPE; Organophosphorus pesticides; Carbamate pesticides
2009, 35(2): 86-89 收稿日期: 2008-10-12;收到修改稿日期: 2008-12-17
基金项目:
作者简介: 杨元(1951-),男,四川成都市人,主任技师,主要从事色谱、光谱应用研究工作。
参考文献
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