气相色谱法测定水中三氯杀螨醇和除拟虫菊酯的方法验证  

Validation of determination methods of dicofol and pyrethroids in water by gas chromatography

作　　者：蒋瑜宏 周闰[1] 

机构地区：[1]江苏省无锡市疾病预防控制中心,无锡214023

出　　处：《江苏预防医学》2015年第3期48-50,共3页Jiangsu Journal of Preventive Medicine

摘　　要：目的：验证气相色谱法测定水中三氯杀螨醇和7种除拟虫菊酯。方法水样中的微量三氯杀螨醇和除拟虫菊酯经液液萃取后，利用 HP-5毛细管柱，在程序升温条件下进行 GC 分析，以保留时间定性，外标法定量。结果质量浓度0.156～5.00μg／mL 范围内线性关系良好，相关系数 r ＞0.9960，回收率范围为81.9％～106.7％，RSD 为0.5％～4.8％。采用本法对10件水样进行检测，均未检出三氯杀螨醇和7种除拟虫菊酯。结论气相色谱法操作简便，测定结果可靠，方法稳定性和重复性较好，可以满足生活饮用水中三氯杀螨醇和7种除拟虫菊酯测定要求。Objective To verify determination methods of dicofol and 7 kinds of pyrethroid by gas chromatography （GC）. Methods Trace amount of dicofol and pyrethroids in water was concentrated by liquid-liquid extraction,which was subjected to temperature programmed GC analysis using HP-5 capillary column.The retention time was used for qualitative analysis, while external standard method was used for quantitative analysis.Results Linearage was good in mass concentration range of 0.156-5.00 μg/mL ,with correlation coefficient ＆gt;0.996 0,recovery range of 81.9%-106.7% and RSD of 0.5%-4.8%. 10 water samples were tested,none was positive for dicofol or pyrethroids.Conclusion GC analysis was easy to operate and reliable,stable,repeatable,which can be used for routine analysis of dicofol and 7 kinds of pyrethroids in drinking water.

关 键 词：气相色谱 水 三氯杀螨醇 除拟虫菊酯 液液萃取 

分 类 号：R-33[医药卫生]