Trade-induced atmospheric mercury deposition over China and implications for demand-side controls

Chen, Long, Meng, Jing, Liang, Sai, Zhang, Haoran, Zhang, Wei, Liu, Maodian, Tong, Yindong, Wang, Huanhuan, Wang, Wei, Wang, Xuejun and Shu, Jiong (2018) Trade-induced atmospheric mercury deposition over China and implications for demand-side controls. Environmental Science and Technology, 52 (4). 2036–2045. ISSN 0013-936X

[thumbnail of Accepted manuscript]
PDF (Accepted manuscript) - Accepted Version
Available under License Creative Commons Attribution Non-commercial.

Download (1MB) | Preview


Mercury (Hg) is of global concern because of its adverse effects on humans and the environment. In addition to long-range atmospheric transport, Hg emissions can be geographically relocated through economic trade. Here, we investigate the effect of China’s interregional trade on atmospheric Hg deposition over China, using an atmospheric transport model and multiregional input-output analysis. In general, total atmospheric Hg deposition over China is 408.8 Mg yr-1, and 32% of this is embodied in China’s interregional trade, with the hotspots occurring over Gansu, Henan, Hebei, and Yunnan provinces. Interprovincial trade considerably redistributes atmospheric Hg deposition over China, with a range in deposition flux from −104% to +28%. Developed regions, such as the Yangtze River Delta (Shanghai, Jiangsu, and Zhejiang) and Guangdong, avoid Hg deposition over their geographical boundaries, instead causing additional Hg deposition over developing provinces. Bilateral interaction among provinces is strong over some regions, suggesting a need for joint mitigation, such as the Jing-Jin-Ji region (Beijing, Tianjin, and Hebei) and the Yangtze River Delta. Transferring advanced technology from developed regions to their developing trade partners would be an effective measure to mitigate China’s Hg pollution. Our findings are relevant to interprovincial efforts to reduce trans-boundary Hg pollution in China.

Item Type: Article
Faculty \ School: Faculty of Science > School of Environmental Sciences
Related URLs:
Depositing User: Pure Connector
Date Deposited: 29 Jan 2018 11:30
Last Modified: 22 Oct 2022 03:32
DOI: 10.1021/acs.est.7b04607


Downloads per month over past year

Actions (login required)

View Item View Item