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| ICP-MS用于北京市PM_(2.5)中铅及其同位素的形态分析 | |
| 引用本文： | 陈曦,王小燕,刘洋,张经华,刘景秀,闫赖赖,王京宇.ICP-MS用于北京市PM_(2.5)中铅及其同位素的形态分析[J].光谱学与光谱分析,2009,29(2). |
| 作者姓名： | 陈曦 王小燕 刘洋 张经华 刘景秀 闫赖赖 王京宇 |
| 作者单位： | 1. 北京大学公共卫生学院中心实验室,北京,100083 2. 北京大学公共卫生学院中心实验室,北京,100083;北京大学医药卫生分析中心生命元素组学实验室,北京,100083 3. 北京市理化分析测试中心,北京,100089 4. 北京市东城区疾病预防控制中心,北京,100013 |
| 基金项目： | 北京市自然科学基金，国家自然科学基金 |
| 摘 要： | 对2005年9月至2006年5月所采集的24份北京市PM2.5样品进行序列连续提取,分别得到水溶态、脂溶态和不溶态3个分量的铅;在最佳仪器工作条件下,采用电感耦合等离子体质谱(ICP-MS)测定上述各分量中铅的浓度及同位素比值.采用GBW09133考察铅浓度测定的准确度,并用SRM 981标准铅试剂校正质量歧视效应和仪器漂移.结果表明,采用ICP-MS分析大气PM2.5中不同形态铅浓度及同位素比值的测定数据准确可靠.北京市大气PM2.5样品中水溶态、脂溶态和不溶态3个分量铅的平均百分含量分别为20.69%,0.32%和78.99%;相应的铅同位素比值206Pb/207Pb的均值分别为1.1526,1.1374和1.2193;其中水溶态和不溶态铅的同位素比值具有统计学差异(P＜0.01).同位素比值的比对结果提示,北京市成人血铅可能源于北京市大气PM2.5中水溶态铅而非不溶态铅,故大气细颗粒物中水溶态铅对人体健康的威胁更值得注意. |
| 关 键 词： | 电感耦合等离子质谱 化学形态分析 铅同位素 |
Speciation Analysis of Lead and Its Isotopes in Fine Particulate Matters in Beijing by ICP-MS |
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| CHEN Xi,WANG Xiao-yan,LIU Yang,ZHANG Jing-hua,LIU Jing-xiu,YAN Lai-lai,WANG Jing-yu.Speciation Analysis of Lead and Its Isotopes in Fine Particulate Matters in Beijing by ICP-MS[J].Spectroscopy and Spectral Analysis,2009,29(2). | |
| Authors: | CHEN Xi WANG Xiao-yan LIU Yang ZHANG Jing-hua LIU Jing-xiu YAN Lai-lai WANG Jing-yu |
| Institution: | CHEN Xi 1,WANG Xiao-yan 1,2,LIU Yang 3,ZHANG Jing-hua 3,LIU Jing-xiu 4,YAN Lai-lai 1,WANG Jing-yu 1,2 1.School of Public Health,Peking University,Beijing 100083,China 2.Laboratory of Biometalomics,Center of Medical & Health Analysis,China 3.Beijing Center for Physical & Chemical Analysis,Beijing 100089,China 4.Dongcheng District Center for Disease Prevention , Control,Beijing 100013,China |
| Abstract: | Fine particulate matters(PM 2.5) collected in Beijing during a period from September 2005 to May 2006 were studied.Sequential extraction procedures were applied to divide the total lead into three fractions,i.e.water soluble,liposoluble and insoluble lead.Lead concentrations and their isotopes in each fraction were then determined by inductively coupled plasma mass spectrometry(ICP-MS).Lead standard reference GBW 09133 was used to investigate the accuracy of lead concentration determination and SRM 981 was ... |
| Keywords: | PM2 5 |
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