Sedimentary mercury (Hg) in the marginal seas adjacent to Chinese high-Hg emissions: Source-to-sink, mass inventory, and accumulation history
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Title
- Sedimentary mercury (Hg) in the marginal seas adjacent to Chinese high-Hg emissions: Source-to-sink, mass inventory, and accumulation history
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Author(s)
- Kim, Jihun; Lim, Dhongil; Jung, Dohyun; Kang, Jeongwon; Jung, Hoisoo; Woo, Hanjun; Jeong, Kapsik; Xu, Zhaokai
- KIOST Author(s)
- Kim, Ji Hun(김지훈); Lim, Dhong Il(임동일); Kang, Jeong Won(강정원); Jung, Hoi Soo(정회수); Woo, Han Jun(우한준)
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Alternative Author(s)
- 김지훈; 임동일; 정도현; 강정원; 정회수; 우한준; 정갑식
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Publication Year
- 2018-03
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Abstract
- We comprehensively investigated sedimentary Hg in Yellow and East China Seas (YECSs), which constitute potentially important depocenters for large anthropogenic Fig emissions from mainland China. A large dataset of Al-TOC-Hg concentrations led to an in-depth understanding of sedimentary Hg in the entire YECSs, including distribution and its determinants, source-to-sink, background levels, inventory in flux and budget, and accumulation history. Especially, the net atmospheric Hg flux to the sediments was estimated to be 1.3 x 10(-5) g/m(2)/yr, which corresponded reasonably well to that calculated using a box model. About 21.2 tons of atmospheric Hg (approximately 4% of the total anthropogenic atmospheric Hg emissions from China) were buried annually in the YECS basin. This result implies that most of atmospheric Hg from China is transferred to the surface of the Pacific (including the East/Japan Sea and South China Sea) by the westerlies and, consequently, can play a critical role in open-sea aquatic ecosystems.
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ISSN
- 0025-326X
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URI
- https://sciwatch.kiost.ac.kr/handle/2020.kiost/998
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DOI
- 10.1016/j.marpolbul.2018.01.058
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Bibliographic Citation
- MARINE POLLUTION BULLETIN, v.128, pp.428 - 437, 2018
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Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
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Subject
- ATMOSPHERIC MERCURY; MARINE-SEDIMENTS; YELLOW SEA; PROVENANCE DISCRIMINATION; METAL CONCENTRATIONS; ESTUARINE SEDIMENTS; SURFACE SEDIMENTS; RIVER ESTUARY; HEAVY-METALS; HUDSON-BAY
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Keywords
- Sedimentary mercury; Atmospheric deposition; Mercury inventory; Pacific marginal sea
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Type
- Article
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Language
- English
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Document Type
- Article
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