3种测定地表水中痕量铅的方法对比  

Comparison of three methods for the determination of trace lead in surface water

作　　者：贺攀红[1] 杨珍[1] 马琳 梁亚丽 杨有泽[1] HE Pan-hong;YANG Zhen;MA Lin;LIANG Ya-li;YANG You-ze(Henan Province Geology Bureau of Nuclear Industry,Henan Province Radionuclide Detection Center of Nuclear Industry,Zhengzhou 450044,China)

机构地区：[1]河南省核工业地质局河南省核工业放射性核素检测中心,河南郑州450044

出　　处：《化学工程师》2022年第9期25-28,共4页Chemical Engineer

基　　金：重庆市2018年第五批科技计划项目(cstc2018jszx-cyzdX0114)。

摘　　要：分别采用电感耦合等离子体质谱法(ICP-MS)、电感耦合等离子体原子发射光谱法(ICP-AES)和氢化物发生原子荧光光谱法(HG-AFS)测定地表水中痕量铅,从方法精密度、准确度和实用性等方面进行对比分析。经统计学方差分析,3种方法之间不存在显著性差异,均能够满足测定需求。但因其测定原理以及影响因素的不同,测定结果准确度上略有差异,质控样品准确度在93.6%~98.1%之间,实际样品加标回收率在90.8%~101.2%之间,均在允许范围内。ICP-AES的检出限高于ICP-MS和HG-AFS,线性范围方面ICP-AES要宽于ICP-MS和HG-AFS,操作复杂程度方面ICP-AES<ICP-MS<HG-AFS,质控样品准确度方面HG-AFS<ICP-MS<ICP-AES,检测成本方面HG-AFS<ICP-AES<ICP-MS。对比结果表明,3种测定方法均可很好的测定痕量铅,在批量样品检测效率方面ICP-MS和ICP-AES略有优势。Trace lead in surface water was determined by inductively coupled plasma mass spectrometry(ICP-MS),inductively coupled plasma atomic emission spectrometry(ICP-AES)and hydride generation atomic fluorescence spectrometry(HG-AFS).Through statistical analysis of variance,there is no significant difference between the three methods,which can meet the needs of measurement.However,due to the different determination principles and influencing factors,there are slight differences in the accuracy of the determination results.The accuracy of the quality control samples is 93.6%~98.1%,and the recovery rate of the actual samples is 90.8%~101.2%,all within the allowable range.The detection limit of ICP-AES is higher than that of ICP-MS and HG-AFS,the linear range of ICP-AES is wider than that of ICP-MS and HG-AFS,the operation complexity is ICP-AES<ICP-MS<HG-AFS,the accuracy of quality control samples is HG-AFS<ICP-MS<ICP-AES,and the detection cost is HG-AFS<ICP-AES<ICP-MS.The results showed that the three methods can determine trace lead well,and ICP-MS and ICP-AES have slight advantages in the detection efficiency of batch samples.

关 键 词：铅 电感耦合等离子体质谱法 氢化物发生原子荧光光谱法 电感耦合等离子体原子发射光谱法 

分 类 号：O657.31[理学—分析化学]