全自动固相萃取-气质联用法测定水中14种农药残留  

Simultaneous determination of 14 pesticides in water by automatic solid-phase extraction-gas chromatography-mass spectrometry

作　　者：黄伟华[1] 胡美华[1] 

机构地区：[1]南昌市疾病预防控制中心

出　　处：《现代预防医学》2015年第21期3965-3968,共4页Modern Preventive Medicine

摘　　要：目的 建立水中敌敌畏、毒死蜱、α-六六六、β-六六六、γ-六六六、δ-六六六、七氯、p,p＇-滴滴伊、o,p＇-滴滴涕、p,p＇-滴滴滴、p,p＇-滴滴涕、莠去津、六氯苯和百菌清的全自动固相萃取-气相色谱/质谱联用测定方法。方法 利用全自动固相萃取技术对水样中农药进行提取、净化及浓缩,以GC-MS对14种农药进行分离检测,内标法定量。结果 本法相关系数均≥0.9979,检出限均在0.31-14.7 ng/ml之间,回收率在75.9%-129.7%之间,相对标准偏差（RSD）均≤8.2%（n=5）。结论 该方法的自动化程度高,灵敏度高,选择性好,准确度高,污染少,适用于水中多种农药的同时检测。Objective To develop a method for determination of 14 pesticides including dichlorvos, chlorpyrifos, α -BHC, β -BHC,γ-BHC, δ-BHC, heptachlors, p, p＇-DDE, o, p＇-DDT, p, p＇-DDD, p, p＇-DDT, atrazines, hexachlorobenzenes and chlorothalonilsin water by automatic solid- phase extraction coupled to gas chromatography- mass spectrometry （GC-MS）. Methods C18 was usedto extract and enrich the pesticides in water by automatic solid-phase extraction, then the target compounds were analyzed byGC-MS under selected-ion monitoring （SIM） mode. Results The correlation coefficient of the method were all greater than 0.9979,and the limits of detection （S/N=3） were in the range of 0.31-14.7 ng/mL. The mean recoveries were 75.9%-129.7% with the RSDof greater 8.2 % （n=5）. Conclusion The developed method is of automatization, sensitivity, selectivity, less pollution, and it issuitable for the determination of 14 pesticides in water sample.

关 键 词：农药 气质联用法 全自动固相萃取 水 

分 类 号：R115[医药卫生—公共卫生与预防医学]