液液小体积萃取双塔双柱气相色谱法测定地表水中有机氯农药

Determination of Organochlorine Pesticides in Surface water by Small Volume Liquid–liquid Extraction Combined with Gas Chromatography Coupled with Dual-tower and Dual-column

摘要: 建立了一种小体积液液萃取双塔双柱气相色谱法方法快速测定地表水中有机氯农药的分析方法。方法具有操作简单快速、适用性广和试剂用量很少等特点。当萃取试剂用量为1.5mL时，萃取富集效率可达270~470倍，回收率为92.7%~102%，相对标准偏差为2.3%~6.5%，检出限为0.02~0.04μg/L。

Abstract: In this paper a small volume liquid–liquid extraction (SVLLE) method combined with gas chromatography coupled with dual-tower and dual-column for the rapid determination of organochlorine pesticide in surface water is developed. The method is simple and fast. Only 1.5 mL of extraction solvent is used. The enrichment factor can be 270~470. The recovery rate is in the range of 92.7%~102% with RSD in the range of 2.3%~6.5%, and the detection limit in the range of 0.2~0.04μg/L.