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Mercury Inputs to Chinese Marginal Seas: Impact of Industrialization and Development of China
Runsheng Yin;  Zhigang Guo;  Limin Hu;  Wenchuan Liu;  James P. Hurley;  Ryan F. Lepak;  Tian Lin;  Xinbin Feng;  Xiangdong Li
2018
Source PublicationJournal of Geophysical Research: Oceans
Volume123Issue:8Pages:5599-5611
Abstract

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 Pb-210-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 (Hg-202: -2.01 to -0.69; Hg-199: -0.16 to 0.31; n=106). Hg-202 increased from the deep to the surface layers of the cores. The offshore cores mainly showed positive Hg-199 values, but the pre-1950 samples had more positive Hg-199 values than the younger samples. The nearshore cores mainly showed negative Hg-199 values in the pre-1950s samples, but the younger samples showed Hg-199 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. 

Plain Language Summary This study demonstrates that mercury inputs to Chinese marginal seas have been largely altered due to industrialization and economic development of China with enhanced industrial Hg inputs to the ocean margin, but slightly decreased watershed soil Hg inputs in the last few decades.

Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.gyig.ac.cn/handle/42920512-1/8884
Collection矿床地球化学国家重点实验室
Affiliation1.State Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China
2.Shanghai Key Laboratory of Atmospheric Particle Pollution Prevention, Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China
3.Key Laboratory of Marine Sedimentology and Environmental Geology, First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China
4.Environmental Chemistry and Technology Program, University of Wisconsin-Madison, Madison, WI, 53706, USA
5.Department of Civil and Environmental Engineering, University of Wisconsin-Madison, Madison, WI, 53706, USA
6.State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China
7.Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
Recommended Citation
GB/T 7714
Runsheng Yin;Zhigang Guo;Limin Hu;Wenchuan Liu;James P. Hurley;Ryan F. Lepak;Tian Lin;Xinbin Feng;Xiangdong Li. Mercury Inputs to Chinese Marginal Seas: Impact of Industrialization and Development of China[J]. Journal of Geophysical Research: Oceans,2018,123(8):5599-5611.
APA Runsheng Yin;Zhigang Guo;Limin Hu;Wenchuan Liu;James P. Hurley;Ryan F. Lepak;Tian Lin;Xinbin Feng;Xiangdong Li.(2018).Mercury Inputs to Chinese Marginal Seas: Impact of Industrialization and Development of China.Journal of Geophysical Research: Oceans,123(8),5599-5611.
MLA Runsheng Yin;Zhigang Guo;Limin Hu;Wenchuan Liu;James P. Hurley;Ryan F. Lepak;Tian Lin;Xinbin Feng;Xiangdong Li."Mercury Inputs to Chinese Marginal Seas: Impact of Industrialization and Development of China".Journal of Geophysical Research: Oceans 123.8(2018):5599-5611.
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