Daily concentrations of trace metals in aerosols in Beijing, China, determined by using inductively coupled plasma mass spectrometry equipped with laser ablation analysis, and source identification of aerosols
Daily concentrations of trace metals in aerosols in Beijing, China, determined by using inductively coupled plasma mass spectrometry equipped with laser ablation analysis, and source identification of aerosols
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DOI：
10.1016/j.scitotenv.2004.04.010
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发表时间：
2004-09-01
影响因子：
9.8
通讯作者：
Lei, Y
中科院分区：
文献类型：
--
作者：
Okuda, T;Kato, J;Lei, Y
本文描述了2001年3月至2003年8月中国北京气溶胶中微量金属和离子成分的日浓度。2001年9月至2003年8月还测量了PM10的日浓度。2001年9月至2003年8月中国北京的PM10日均浓度为171±117微克/立方米（n = 673），比日本横滨高5倍。采用配备激光烧蚀进样系统（LA/ICPMS）的电感耦合等离子体质谱仪分析微量金属浓度，这是一种快速且能同时进行多元素分析的方法。2001年3月至2003年8月北京总悬浮颗粒物（TSP）中金属的日均浓度分别为：铝：3.5±2.4（n = 727），钛：0.47±0.35（n = 720），钒：0.013±0.010（n = 716），铬：0.019±0.015（n = 618），锰：0.24±0.16（n = 730），铁：5.5±3.9（n = 728），钴：0.0046±0.0055（n = 629），镍：0.022±0.024（n = 680），铜：0.11±0.11（n = 660），锌：0.77±0.60（n = 726），砷：0.048±0.047（n = 731），硒：0.010±0.010（n = 550），镉：0.0068±0.0082（n = 709），锑：0.033±0.036（n = 687），铅：0.43±0.50（n = 728）（单位：微克/立方米）。中国北京总悬浮颗粒物中的所有金属浓度比日本东京市中心总悬浮颗粒物中的金属浓度高1.7 - 21.8倍。值得注意的是，北京总悬浮颗粒物中的砷浓度比东京高20倍。利用化学质量平衡（CMB）受体模型以及气溶胶中金属的日浓度对北京气溶胶进行了源解析。北京气溶胶的主要一次源被认为是土壤扬尘和煤炭燃烧。机动车尾气的贡献有增加的趋势。（C）2004爱思唯尔公司。版权所有。
This paper describes the daily concentrations of trace metals and ionic constituents in the aerosol of Beijing, China from March 2001 to August 2003. Daily PM10 concentrations were also measured from September 2001 to August 2003. The daily average PM,, concentration at Beijing, China from September 2001 to August 2003 was 171 +/- 117 mug m(-3) (n=673), which is 5-fold higher than at Yokohama, Japan. Trace metal concentrations were analyzed by using inductively coupled plasma mass spectrometry equipped with a laser ablation sample introduction (LA/ICPMS), which is a rapid and simultaneous method for multi-element analysis. The daily average metal concentrations in TSP in Beijing from March 2001 to August 2003 were: Al: 3.5+/-2.4 (n=727), Ti: 0.47+/-0.35 (n=720), V:0.013+/-0.010 (n=716), Cr: 0.019+/-0.015 (n=618), Mn: 0.24+/-0.16 (n=730), Fe: 5.5+/-3.9 (n=728), Co: 0.0046+/-0.0055 (n = 629), Ni: 0.022+/-0.024 (n = 680), Cu: 0.11+/-0.11 (n = 660), Zn: 0.77+/-0.60 (n = 726), As: 0.048+/-0.047 (n=731), Se: 0.010+/-0.010 (n=550), Cd: 0.0068+/-0.0082 (n=709), Sb: 0.033+/-0.036 (n=687), and Ph: 0.43+/-0.50 (n = 728) (unit, mug M-3). All the metal concentrations in TSP in Beijing, China were 1.7-21.8 times higher than those in TSP in the center of Tokyo, Japan. Notably, As concentrations in TSP in Beijing were 20-fold higher than those in Tokyo. Source identification of aerosols in Beijing was carried out by using the chemical mass balance (CMB) receptor model, with the daily concentration of metals in the aerosol. The major primary sources of the aerosol of Beijing were considered to be soil dust and coal combustion. Vehicle exhaust contribution tended to increase. (C) 2004 Elsevier B.V. All rights reserved.