顶空/气相色谱-质谱法测定水中四乙基铅及水样保存研究  

Study on the preservation of water samples and the determination of tetraethyl lead in water by headspace gas chromatography/mass spectrometry

作　　者：邢冠华[1] 刘睿 谭丽[1] 陈烨[1] 许秀艳[1] 吕怡兵[1] 于海斌[1] XING Guanhua;LIU Rui;TAN Li;CHEN Ye;XU Xiuyan;Lü Yibing;YU Haibin(China National Environmental Monitoring Centre,Beijing 100012,China;Luoyang Environmental Monitoring Station,Luoyang 471000,China)

机构地区：[1]中国环境监测总站,北京100012 [2]洛阳市环境监测站,河南洛阳471000

出　　处：《中国测试》2018年第11期24-28,共5页China Measurement & Test

基　　金：2013年度环保公益性行业科研专项(201309050)

摘　　要：建立顶空/气相色谱-质谱法测定水中四乙基铅的分析方法。系统考察顶空条件、气相色谱质谱分析条件、样品保存条件对测定结果的影响,及不同水样方法的适用性。在优化条件下,四乙基铅在0.05～10μg/L浓度范围内线性关系良好,当取样体积为10 mL时,方法检出限为0.008μg/L,测定下限为0.032μg/L。用于实际水样分析,加标回收率范围为:78.0%～104%。该方法高效、准确、灵敏,可适用于地表水、地下水、工业废水和生活污水中四乙基铅的测定。A gas chromatography and mass spectrometry method coupled with headspace(HS-GC/MS)was developed for the determination of tetraethyl lead in water.Many impacting parameters were systematically investigated,including the instrumental parameters for headspace and GC/MS analysis,the effects of sample preservation conditions and the applicability of different kinds of water samples.Under the optimized conditions,there was a good linear relationship for tetraethyl lead within the concentrations in the range of 0.05-10μg/L,and the detection limit is 0.008μg/L,the low limit of determination is 0.032μg/L,when the sampling volume was 10 mL.For real water sample analysis,the range of recovery is 78.0%-104%.This method is efficient,accurate and sensitive,suitable for measuring concentrations of tetraethyl lead in the surface water,groundwater,industrial wastewater and domestic sewage samples.

关 键 词：四乙基铅 顶空/气相色谱-质谱法 水样保存 

分 类 号：X830.2[环境科学与工程—环境工程]