气相色谱法测定水中溴氰菊酯  

GC-ECD Method for Analysis of Deltamethrin in Water

作　　者：曾锦明 谭海彬 

机构地区：[1]珠海水务集团水质监测研究中心,广东珠海519020

出　　处：《广东微量元素科学》2011年第9期64-68,共5页Trace Elements Science

基　　金：863计划(2008AA06A413)资助

摘　　要：采用气相色谱法-电子捕获检测器(GC-ECD)对水中溴氰菊酯进行检测。取10 mL水样,加入0.4 g氯化钠,经环己烷萃取后,有机相干燥、氮吹浓缩,用带电子捕获检测器的气相色谱仪检测,外标法定量。结果表明,溴氰菊酯在2.0～40.0μg/L范围内线性关系良好,相关系数为0.999 8。方法检出限为:0.40μg/L。水样加标回收率为97.0%,相对标准偏差(RSD,n=5)为13.9%。该法具有操作简便、萃取效率高、回收率好的优点,适用于饮用水和地表水中溴氰菊酯的检测。A method for GC-ECD determination of deltamethrin in water was established.10 mL of water sample,previously added with 0.4 g of NaCl,was extracted by 5 mL of cyclohexane twice.The organic phase dried and concentrated,then determined by capillary column gas chromatography with electron capture detector（ECD） and quantified by external standard method.The results showed that the correlation coefficient was 0.999 8 in the linear range at 2.0～40.0 μg/L.The method detection limit（MDL） was 0.40 μg/L.Recovery and repeatability（relative standard deviations,RSD,n=5） were 97.0% and 13.9%,respectively.The method is rapid,precise and high efficient.It can be applied to the routine analysis of deltamethrin in water.

关 键 词：溴氰菊酯 水 气相色谱 电子捕获检测器 

分 类 号：O657.71[理学—分析化学]