| 北京市大气颗粒物分级样品的铅同位素丰度比测量与来源研究 |
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| 引用本文： | 刘咸德,朱祥坤,董树屏,李玉武,David Widory,杨红霞,李冰.北京市大气颗粒物分级样品的铅同位素丰度比测量与来源研究[J].质谱学报,2011,32(3):151-158. |
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| 作者姓名： | 刘咸德 朱祥坤 董树屏 李玉武 David Widory 杨红霞 李冰 |
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| 作者单位： | 1.中国环境科学研究院，北京100012；2.中国地质科学院地质研究所，国土资源部同位素地质重点实验室，北京100037；3.国家环境分析测试研究中心，北京100029；4.BRGM MMA/ISO, 45060 Orléans Cedex 2, France；5.国家地质实验测试中心，北京100037 |
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| 基金项目： | 国家自然科学基金委面上项目 |
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| 摘 要： | 报道了北京市2004年夏、冬季分级采样样品的化学组成和铅同位素丰度比数据，并对铅来源进行了分析。采用电感耦合等离子体原子发射光谱（ICP-AES）和电感耦合等离子体质谱（ICP-MS）技术分析了24个无机元素浓度，同时用多接收器电感耦合等离子体质谱（MC-ICP MS）技术测定铅同位素丰度比。结果表明：细颗粒（PM2.5）中的铅含量明显高于粗颗粒（PM10~2.5），可吸入颗粒物（PM10）中80%以上的铅存在细颗粒。细颗粒的206Pb/207Pb比值处于1.140~1.156的范围；粗颗粒的206Pb/207Pb比值处于1.127~1.148的范围，总体上低于细颗粒。北京市大气铅来源复杂、多样，有2个或3个以上，主要来源除了燃煤排放还有涉铅有色冶金排放。基于前期工作积累的较多样品测量数据，燃煤排放的206Pb/207Pb代表性比值为1.163 3；涉铅有色冶金排放源的数据较少，初步判断处于1.11~1.15之间，中值为1.13。夏季、冬季细颗粒中燃煤源贡献率分别为0.51和0.59；涉铅有色冶金源的贡献率分别为0.49和0.41。北京市大气铅污染同时具有当地排放和区域性排放的贡献和特征。
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| 关 键 词： | 大气颗粒物 铅 铅来源 同位素丰度比 电感耦合等离子体质谱（ICP-MS） |
Lead Isotopic Measurements and Source Study for Size-Selective Aerosol Samples in Beijing |
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| LIU Xian-de,ZHU Xiang-kun,DONG Shu-ping,LI Yu-wu,David Widory,YANG Hong-xia,LI Bing.Lead Isotopic Measurements and Source Study for Size-Selective Aerosol Samples in Beijing[J].Journal of Chinese Mass Spectrometry Society,2011,32(3):151-158. |
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| Authors: | LIU Xian-de ZHU Xiang-kun DONG Shu-ping LI Yu-wu David Widory YANG Hong-xia LI Bing |
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| Affiliation: | 1. Chinese Research Academy of Environment Sciences, Beijing 100012, China; 2. Chinese Research Academy of Geology, Beijing 100037,China; 3. National Research Center for Environmental Analysis and Measurements, Beijing 100029, China,; 4. BRGM MMA/ISO, 45060 Orléans Cedex 2, France; 5. National Research Center for Geo Analysis, Beijing 100037, China |
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| Abstract: | Size-selective aerosol samples,both fine fractions(PM2.5) and coarse fractions(PM10-2.5) were collected in 2004 in Beijing.There were 11 pairs in summer and 12 pairs in winter,respectively.For those samples 24 elements were determined using either ICP-AES or ICP-MS,and lead isotope abundances were measured using MC-ICP-MS.It was revealed that lead contents in fine fractions were substantially higher than those of coarse fractions.More than 80% of lead in PM10 samples was in the fine fractions.The 206Pb/207P... |
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| Keywords: | atmospheric aerosol lead lead source isotope abundance ratio ICP-MS |
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