ICP-MS分析四城市血铅浓度及同位素指纹地区特征  

Regional Effect Research of Blood Lead Concentrations and Isotopic Fingerprints in Four Cities by ICP-MS

作　　者：曾静[1,2] 王京宇[1,2] 刘雅琼[1] 解清[1] 欧阳荔[1] 

机构地区：[1]北京大学公共卫生学院,北京100191 [2]北京大学医药卫生分析中心,北京100191

出　　处：《光谱学与光谱分析》2011年第11期3101-3104,共4页Spectroscopy and Spectral Analysis

基　　金：科技部重大新药创制专项项目(2009ZX09502-027-4);国家自然科学基金项目(30972434)资助

摘　　要：通过电感耦合等离子体质谱(ICP-MS)对北京、太原、苏州、成都四城市40份成人血铅进行了浓度及其同位素比值的同时测定,以考查不同地区血铅的地区性特征。结果显示工业城市成都、太原血铅浓度高于非工业城市北京、苏州,说明工业污染仍是造成高血铅的重要因素;同位素测试结果显示各城市血铅同位素比值具有特征分布区域和分布特点,食源性铅可能已取代大气铅成为北京等发达城市血铅的主要来源,全球化带来的的物产多样化削弱了一些发达城市铅污染的地区特征。Blood lead is a reflection of environment lead in vivo,its concentration could be used to assess lead exposure of environment quantitatively,and its isotopic ratio could be used to fingerprint environment source qualitatively.In the present study,concentrations and isotopic ratios of blood lead（BPb） of four cities in China were measured by ICP-MS for the first time.The regional effects of BPb in four Chinese cities were observed in our study.The BPb levels of industrial cities（Taiyuan and Chengdu） are higher than that of non-industrial cities（Suzhou and Beijing）,indicating that industrial pollution remains primary lead contamination factor.The BPb isotopic ratios are diverse with the different character of environment the individuals live in.Food-borne lead probably has replaced the air-borne lead to be the major source of BPb in Beijing.Besides,regional effect of BPb in some developed cities is partly weakened by diversity of vast majority of imported resources.

关 键 词：血铅 同位素比值 浓度 地区特征 ICP-MS 

分 类 号：O657.1[理学—分析化学]