Increase in anthropogenic mercury in marginal sea sediments of the Northwest Pacific Ocean
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Title
- Increase in anthropogenic mercury in marginal sea sediments of the Northwest Pacific Ocean
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Author(s)
- Kim, Haryun; Lee, Kitack; Lim, Dhong-Il; Nam, Seung-Il; Han, Seung Hee; Kim, Jihun; Lee, Eunil; Han, In-Seong; Jin, Young Keun; Zhang, Yanxu
- KIOST Author(s)
- Lim, Dhong Il(임동일); Kim, Ji Hun(김지훈)
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Alternative Author(s)
- 임동일; 김지훈
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Publication Year
- 2019-03-01
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Abstract
- Over the past century. the addition of anthropogenic mercury (Hg-ANTH) to vast areas of North Pacific marginal seas adjacent to the northeast Asian continent has tripled. Analysis of sediment cores showed that the rate of Hg-ANTH addition (Hg-ANTH flux) was greatest in the East China and Yellow Seas (9.1 mu g m(-2) yr(-1)) in the vicinity of China ( the source continent), but was small in the Bering and western Arctic Ocean (Chukchi Sea) (0.9 mu g m(-2) yr(-1): the regions furthest from China). Our results show that Hg-ANTH has reached open ocean sedimentary environments over extended areas of the northwestern Pacific Ocean, via the formation of organic-mercury complexes and deposition. The implication of these findings is that the addition of Hg-ANTH (via atmospheric deposition and riverine input) to the ocean environment is responsible for elevated Hg flux into sedimentary environments in the northwest Pacific Ocean. (C) 2018 Elsevier B.V. All rights reserved.
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ISSN
- 0048-9697
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URI
- https://sciwatch.kiost.ac.kr/handle/2020.kiost/669
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DOI
- 10.1016/j.scitotenv.2018.11.076
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Bibliographic Citation
- SCIENCE OF THE TOTAL ENVIRONMENT, v.654, pp.801 - 810, 2019
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Publisher
- ELSEVIER SCIENCE BV
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Subject
- STABLE-ISOTOPE SIGNATURES; EAST CHINA; ARCTIC-OCEAN; VERTICAL-DISTRIBUTION; METAL CONCENTRATIONS; ACCUMULATION RATES; MARINE-SEDIMENTS; ORGANIC-MATTER; TRACE-METALS; DEPOSITION
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Keywords
- Total mercury; Anthropogenic Hg; Ocean sediment
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Type
- Article
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Language
- English
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Document Type
- Article
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