Enhancing atmospheric mercury research in China to improve the current understanding of the global mercury cycle: the need for urgent and closely coordinated efforts.
Enhancing atmospheric mercury research in China to improve the current understanding of the global mercury cycle: the need for urgent and closely coordinated efforts.
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DOI：
10.1021/es300137y
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发表时间：
2012-04
影响因子：
11.4
通讯作者：
Zhijia Ci;Xiaoshan Zhang;Zhangwei Wang
中科院分区：
文献类型：
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作者：
Zhijia Ci;Xiaoshan Zhang;Zhangwei Wang
由于汞在环境中的行为非常复杂，目前对全球汞循环的认识仍然不确定。汞的特殊性质使大气成为全球扩散和转化的最重要介质。大气汞的来源、归宿及其与地表环境的相互作用是全球汞循环研究的重要课题。最近大气中汞的测量值呈下降趋势，这与全球人为汞排放量呈上升趋势明显矛盾。随着发达地区人为汞排放量的减少，中国作为全球最大的汞排放国，在全球汞循环中的作用将越来越重要。然而，中国的汞信息要少得多。汞是一种具有长距离迁移和持久性的全球性污染物，提高我国对汞的认识，不仅可以促进我国对汞的管理，而且可以提高对全球汞循环基本原理的认识，进一步推动全球范围内汞的减排。中国大气汞的研究可能是提高对全球汞循环认识的突破口。然而，由于汞在大气中的复杂行为，更深入地了解中国的大气汞循环需要更大的跨领域合作。
The current understanding of the global mercury (Hg) cycle remains uncertain because Hg behavior in the environment is very complicated. The special property of Hg causes the atmosphere to be the most important medium for worldwide dispersion and transformation. The source and fate of atmospheric Hg and its interaction with the surface environment are the essential topics in the global Hg cycle. Recent declining measurement trends of Hg in the atmosphere are in apparent conflict with the increasing trends in global anthropogenic Hg emissions. As the single largest country contributor of anthropogenic Hg emission, China's role in the global Hg cycle will become more and more important in the context of the decreasing man-made Hg emission from developed regions. However, much less Hg information in China is available. As a global pollutant which undergoes long-range transport and is persistence in the environment, increasing Hg knowledge in China could not only promote the Hg regulation in this country but also improve the understanding of the fundamental of the global Hg cycle and further push the abatement of this toxin on a global scale. Then the atmospheric Hg research in China may be a breakthrough for improving the current understanding of the global Hg cycle. However, due to the complex behavior of Hg in the atmosphere, a deeper understanding of the atmospheric Hg cycle in China needs greater cooperation across fields.