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| 苏州市区PM2.5中元素污染特征 |
| Characteristics of Elements Pollution in PM2.5 in Suzhou City |
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| DOI： |
| 中文关键词: PM2.5 元素 富集因子 污染特征 苏州市区 |
| 英文关键词: PM2.5 Element Enrichment factor Pollution characteristics Urban district in Suzhou |
| 基金项目:江苏省环境监测科研基金资助项目（1217） |
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| 中文摘要: |
| 2014年使用EHM-X100型在线金属分析仪自动监测苏州市区大气PM2.5中Pb、Cu、K等24种元素质量浓度，并结合当地工业经济发展和降雨、土壤等环境状况对元素污染特征进行分析研究。结果表明：这24种元素的年均质量浓度在0.002 μg/m3～0.834 μg/m3之间，并总体呈现冬季质量浓度最高，春、秋季次之，夏季最低的变化趋势；Fe、Ca和Zn 3种元素在总质量浓度中占比较高，这可能与当地产业布局、建筑业及交通状况等有关,是人类活动所导致的污染。 |
| 英文摘要: |
| The concentrations of 24 metal elements, including Pb，Cu and K, in PM2.5 in Suzhou city were determined by EHM-X100 automatic monitoring instrument in 2014. The characteristics of elements pollution were analyzed referring to local development of industries and economy, rainfall and soil situations. The results showed the annual average mass concentrations of these 24 elements were 0.002 μg/m3 ～ 0.834 μg/m3, a seasonal variation showed the highest concentration was in winter, spring and autumn followed, and the lowest in summer. Fe Ca and Zn, accounting for a large proportion of total elements, were attributed to human activities such as local industry, construction and transportation which caused air pollution. |
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