| 北京城区PM2.5中致癌重金属季节变化特征及其来源分析 |
| |
| 引用本文： | 陶俊,张仁健,段菁春,荆俊山,朱李华,陈忠明,赵岳,曹军骥.北京城区PM2.5中致癌重金属季节变化特征及其来源分析[J].环境科学,2014,35(2):411-417. |
| |
| 作者姓名： | 陶俊 张仁健 段菁春 荆俊山 朱李华 陈忠明 赵岳 曹军骥 |
| |
| 作者单位： | 环境保护部华南环境科学研究所, 广州 510655;中国科学院大气物理研究所, 北京 100029;中国科学院大气物理研究所, 北京 100029;中国环境科学研究院, 北京 100012;中国科学院大气物理研究所, 北京 100029;环境保护部华南环境科学研究所, 广州 510655;北京大学环境科学与工程学院, 北京 100871;北京大学环境科学与工程学院, 北京 100871;中国科学院地球环境研究所, 西安 710075 |
| |
| 基金项目： | 环境保护公益性行业科研专项（201009001）；科技部国际科技合作项目（2010DFA22770） |
| |
| 摘 要： | 于2009年4、7、10月和2010年1月在北京城区采集了PM2.5样品,采用电感耦合等离子体质谱仪分析得到29种金属元素,对7种致癌重金属浓度、富集程度及其可能的来源进行了分析.结果表明,7种致癌重金属As、Cd、Co、Cr、Ni、Pb和Se年均值浓度分别为(11.6±14.0)、(2.6±2.4)、(1.0±0.7)、(11.3±9.4)、(4.0±2.4)、(142.5±98.9)、(3.3±2.2)ng·m-3,其中仅As年均值浓度超过WHO参考限值的0.8倍.7种致癌重金属仅As、Cd、Pb和Se等4种重金属有明显富集现象,富集因子均超过500,其中夏季富集因子明显高于其它季节.春、秋和冬季4种高富集致癌重金属主要来源于北京周边的燃煤和城区机动车排放,夏季则主要来源于区域性污染源的输送.
|
| 关 键 词： | PM 2.5 砷 健康风险 富集 来源 |
| 收稿时间： | 5/8/2013 12:00:00 AM |
| 修稿时间： | 2013/7/17 0:00:00 |
Seasonal Variation of Carcinogenic Heavy Metals in PM2.5 and Source Analysis in Beijing |
| |
| TAO Jun,ZHANG Ren-jian,DUAN Jing-chun,JING Jun-shan,ZHU Li-hu,CHEN Zhong-ming,ZHAO Yue and CAO Jun-ji.Seasonal Variation of Carcinogenic Heavy Metals in PM2.5 and Source Analysis in Beijing[J].Chinese Journal of Environmental Science,2014,35(2):411-417. |
| |
| Authors: | TAO Jun ZHANG Ren-jian DUAN Jing-chun JING Jun-shan ZHU Li-hu CHEN Zhong-ming ZHAO Yue and CAO Jun-ji |
| |
| Institution: | South China Institute of Environmental Sciences, Ministry of Environmental Protection, Guangzhou 510655, China;Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China;Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China;Chinese Research Academy of Environmental Sciences, Beijing 100012, China;Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China;South China Institute of Environmental Sciences, Ministry of Environmental Protection, Guangzhou 510655, China;College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China;College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China;Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710075, China |
| |
| Abstract: | During April, July, October 2009 and January 2010, daily (24-h average) PM2.5 samples were collected at urban sites in Beijing and 29 metal elements were analyzed by the ICP-MS. The characteristics of 7 carcinogenic heavy metal mass concentrations, enrichment, and possible sources were discussed. The annual average concentrations of As, Cd, Co, Cr, Ni, Pb and Se were (11.6±14.0), (2.6±2.4), (1.0±0.7), (11.3±9.4), (4.0±2.4), (142.5±98.9) and (3.3±2.2) ng·m-3, respectively. Only annual average concentration of As exceeded WHO standard by a factor of 0.8. Higher enrichment factors of As, Cd, Pb and Se were found and their enrichment factors exceeded 500. Their enrichment factors in summer were much higher than those in other seasons. The local coal combustion and vehicle exhaust should be the dominant sources for the above four carcinogenic heavy metals in spring, autumn and winter, while regional transportation contributed more in summer. |
| |
| Keywords: | PM2 5 arsenic health risk enrichment source |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《环境科学》浏览原始摘要信息 |
| 点击此处可从《环境科学》下载免费的PDF全文 |
|
