globalchange  > 气候减缓与适应
DOI: 10.1029/2017JC013691
Scopus记录号: 2-s2.0-85052395814
论文题名:
Mercury Inputs to Chinese Marginal Seas: Impact of Industrialization and Development of China
作者: Yin R.; Guo Z.; Hu L.; Liu W.; Hurley J.P.; Lepak R.F.; Lin T.; Feng X.; Li X.
刊名: Journal of Geophysical Research: Oceans
ISSN: 21699275
出版年: 2018
卷: 123, 期:8
起始页码: 5599
结束页码: 5611
语种: 英语
英文关键词: China ; deposition history ; input sources ; marginal seas ; mercury isotope
英文摘要: In the past decades, China has experienced substantial economic growth and industrialization. However, the effects of vast development of China on Hg input to the nearby oceans are still unclear. In this study, the influx and isotopic compositions of Hg in four 210Pb-dated sediment cores were examined to investigate changes in Hg deposition to the marginal seas off China over a century. Nearshore cores had higher Hg influxes than offshore cores. Increases of Hg influxes started since the 1950s, which coincides with China's economic development. Dramatic historical changes in Hg isotopic composition were observed in the cores (δ202Hg: −2.01‰ to −0.69‰; Δ199Hg: −0.16‰ to 0.31‰; n = 106). δ202Hg increased from the deep to the surface layers of the cores. The offshore cores mainly showed positive Δ199Hg values, but the pre-1950 samples had more positive Δ199Hg values than the younger samples. The nearshore cores mainly showed negative Δ199Hg values in the pre-1950s samples, but the younger samples showed Δ199Hg values close to zero. A triple-mixing isotope model, used to quantify the contribution of potential Hg inputs (e.g., direct discharge of industrial Hg, soil Hg, and precipitation-derived Hg), showed clear evidence of enhanced industrial Hg inputs to the ocean margin, but slightly decreased watershed soil Hg inputs in the last few decades. The variations of watershed-derived Hg were likely caused by the construction of impoundments in major rivers of China. This study demonstrates that mercury inputs to Chinese marginal seas have been largely altered due to the industrialization and economic development of China. ©2018. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113433
Appears in Collections:气候减缓与适应

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作者单位: State Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, China; Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong; Shanghai Key Laboratory of Atmospheric Particle Pollution Prevention, Department of Environmental Science and Engineering, Fudan University, Shanghai, China; Key Laboratory of Marine Sedimentology and Environmental Geology, First Institute of Oceanography, State Oceanic Administration, Qingdao, China; Environmental Chemistry and Technology Program, University of Wisconsin-Madison, Madison, WI, United States; Department of Civil and Environmental Engineering, University of Wisconsin-Madison, Madison, WI, United States; State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, China

Recommended Citation:
Yin R.,Guo Z.,Hu L.,et al. Mercury Inputs to Chinese Marginal Seas: Impact of Industrialization and Development of China[J]. Journal of Geophysical Research: Oceans,2018-01-01,123(8)
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