Characterization of atmospheric mercury concentrations along an urban–rural gradient using a newly developed passive sampler
Characterization of atmospheric mercury concentrations along an urban–rural gradient using a newly developed passive sampler
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DOI：
10.1016/j.atmosenv.2011.11.046
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发表时间：
2012-02
影响因子：
5
通讯作者：
Wei Zhang;Yindong Tong;D. Hu;Langbo Ou;Xuejun Wang
中科院分区：
文献类型：
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作者：
Wei Zhang;Yindong Tong;D. Hu;Langbo Ou;Xuejun Wang
由于自动化取样技术的成本高，部署困难，很少有关于发展中国家典型城市和农村地区大气汞的调查报告发表。在这项研究中，一种新的被动采样器气态元素汞的开发和应用，以表征在整个城市-农村样带的大气汞水平的趋势。样带起源于北京市，向南延伸150公里进入农村地区。2010年9月至10月（秋季）和11月至12月（冬季）进行了实地部署。使用被动采样器获得的空气中的汞浓度与现场部署期间进行的同步自动测量结果一致。结果表明，两个时期大气汞浓度沿城乡梯度沿着递增的顺序均为：城市>郊区>农村（人口集中）>农村（农田）。
Due to the high costs and deployment difficulties associated with automated sampling technologies, few investigations have been published on atmospheric mercury in typical urban and rural areas in developing countries. In this study, a novel passive sampler for gaseous elemental mercury was developed and applied to characterize trends in atmospheric mercury levels across an urban–rural transect. The sampling transect originated in the city of Beijing and extended ∼150km southward into a rural region. Field deployment was conducted during September–October (autumn) and November–December (winter) in 2010. The mercury concentrations in air obtained using the passive sampler were consistent with synchronous automated measurements performed during the field deployment. The results demonstrated that atmospheric mercury concentrations increased along the urban–rural gradient in the following order in both of the two periods: urban>suburban>rural (populated)>rural (farmland).