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| 南京市冬季大气颗粒态汞的分布特征 |
| Distribution Characteristics of Particulate Mercury in Atmosphere of Nanjing during Winter |
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| DOI： |
| 中文关键词: 大气颗粒汞 分布特征 细颗粒物 可吸入颗粒物 总悬浮颗粒物 南京市 |
| 英文关键词: Atmospheric particulate mercury Distribution characteristics PM2.5 PM10 TSP Nanjing |
| 基金项目:江苏高校优势学科建设工程基金资助项目（1105007001） |
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| 中文摘要: |
| 采集了南京市2012年冬季4个功能区的PM2.5、PM10、TSP样品，对不同粒径大气颗粒物中的颗粒态汞测试。结果表明，南京冬季大气颗粒物TSP中汞的质量浓度为49.26 pg/m3～257.14 pg/m3，平均质量浓度为161.27 pg/m3；PM10中汞的质量浓度为44.82 pg/m3～228.29 pg/m3,平均质量浓度为147.38 pg/m3；PM2.5中汞的质量浓度为35.98 pg/m3～178.58 pg/m3,平均质量浓度为104.10pg/m3。不同功能区大气颗粒态汞质量浓度的分布趋势为：交通综合区＞旅游区＞住宿综合区＞商业区。大气颗粒态汞60%以上存在于可吸入肺的PM2.5中，细颗粒物富集汞的能力比粗颗粒物强。 |
| 英文摘要: |
| The samples of the PM2.5, PM10, TSP were collected in four functional sites of Nanjing during winter in 2012, and the particular mercury concentrations in different size were analyzed. The results indicated that the mercury concentrations of TSP were 49.26 pg/m3 ～ 257.14 pg/m3, the average concentration was161.27 pg/m3. The mercury concentrations of PM10 were 44.82 pg/m3 ～ 228.29 pg/m3, the average concentration was 147.38 pg/m3. The mercury concentrations of PM2.5were 35.98 pg/m3 ～ 178.58 pg/m3, the average concentration was 104.10 pg/m3. The sequence of atmospheric particulate mercury concentration in different functional areas was: traffic district > tourist area > residential district > business district. More than 60% of particulates mercury was combined with fine aerosol, which can be inhaled into the lungs. The fine particulate matters enrich mercury much easier than the coarse particles. |
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