氢化物发生原子荧光光度法分析空气中铅  

Determination of Gaseous Lead in Air by Hydride Generation-Atomic Fluorescence Spectrometry

作　　者：邓义[1] 钟志京[1] 辉永庆[1] 龙素群[1] 林涛[1] 何小波[1] 

机构地区：[1]中国工程物理研究院核物理与化学研究所,四川绵阳621900

出　　处：《环境科学与技术》2011年第6期122-126,共5页Environmental Science & Technology

摘　　要：为提高空气中铅分析的灵敏度,采用氢化物发生原子荧光分析方法进行空气中铅的测量。分别采用微波加热方法和湿式消解法对样品进行了预处理,对两种消解方法进行了比较,并探讨了样品前处理过程对分析的影响;对影响氢化物发生效率的各种实验条件,包括增敏剂、酸介质及氢化物发生体系中各物质浓度等,以及原子荧光分析仪器的条件参数进行了优化研究,确定了原子荧光法分析铅的最佳条件参数;初步探索了HG-AFS方法分析铅时22种共存元素对分析的干扰情况,并和相关文献进行了比较。采用该方法对车间和环境空气中铅含量进行了分析,通过平行样和加标回收等手段对方法的准确度和精密度进行控制,并与ICP-AES方法进行了比对,结果显示,该方法准确可靠。A method with high sensitivity was proposed for detection of gaseous lead by hydride generation-atomic fluorescence spectrometry（HG-AFS）.Microwave heat and conventional method were used to prepare the samples for determination.The effect of pretreatment of the sample on the analysis of lead was studied.The optimum conditions of HG-AFS were also studied,including reaction system,acid media,concentrations of reagents in the system and analytical parameters of AFS.Interferences from 22 coexisting elements were discussed and compared with reference.HG-AFS method was then applied to determine lead in air particulate of ambient and workplace and compared with ICP-AES method.Parallel sample and recovery analysis were performed to ensure the precision and accuracy of measurement.Results showed that the method is accurate and credible.

关 键 词：铅 空气 氢化物发生原子荧光光谱 微波消解 

分 类 号：X830.2[环境科学与工程—环境工程]