气候变化领域集成服务门户(CCPortal): Spatial-temporal characteristics of mercury and methylmercury in marine sediment under the combined influences of river input and coastal currents

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DOI	10.1016/j.chemosphere.2021.129728
	Spatial-temporal characteristics of mercury and methylmercury in marine sediment under the combined influences of river input and coastal currents
	Yu, Chenghao; Xiao, Wenjie; Xu, Yunping; Sun, Xuejun; Li, Mingyue; Lin, Huiming; Tong, Yindong; Xie, Han; Wang, Xuejun
通讯作者	Wang, XJ (通讯作者)
发表日期	2021
ISSN	0045-6535
EISSN	1879-1298
卷号	274
英文摘要	Mercury, especially in the form of methylmercury (MeHg), is a global pollutant, and aquatic products are considered the main sources of Hg exposure to humans. The Bohai and Yellow seas are two important epicontinental seas for marine fisheries and aquaculture in China. A decreasing trend of the THg in the Yellow River Estuary toward the outer edge was reported according to 83 surface sediments (27.3 +/- 15.0 ng g(-1)) and 3 sediment cores from the Bohai Sea and Yellow Sea. The relatively higher THg levels in the central Yellow Sea can be primarily attributed to higher organic carbon levels and finer-grained sediment sizes and partly to the particulates from the riverine input of the Yellow River driven by the currents. An increasing trend in THg levels since industrialization in north China around the Bohai and Yellow seas, and a decreasing trend of Yellow River THg input in recent years were recorded by sediment cores. The spatial distribution pattern of surface sediments MeHg (161 +/- 130 pg g(-1)) was different from that of THg. A higher MeHg content and MeHg/THg ratio were found in the Bohai and Yellow seas compared to the East China Sea, and extremely high MeHg levels (714 pg g(-1)) were found in the Yellow Sea Cold Water Mass (YSCWM) area, which is considered an important region for fishery and marine breeding, suggesting that more attention should be paid to the potential ecological and human health risks in the region due to mercury exposure. (C) 2021 Elsevier Ltd. All rights reserved.
关键词	HEAVY-METAL CONTAMINATION YELLOW-RIVER BOHAI SEA SURFACE SEDIMENTS METHYL MERCURY ENRICHMENT FACTOR SATURATION STATE ORGANIC MERCURY TRANSPORT POLLUTION
英文关键词	Mercury; Methylmercury; Bohai sea; Yellow sea; Marine sediment; Radiometric dating
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:000642944800033
来源期刊	CHEMOSPHERE
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/260462
推荐引用方式 GB/T 7714	Yu, Chenghao,Xiao, Wenjie,Xu, Yunping,et al. Spatial-temporal characteristics of mercury and methylmercury in marine sediment under the combined influences of river input and coastal currents[J]. 中国科学院青藏高原研究所,2021,274.
APA	Yu, Chenghao.,Xiao, Wenjie.,Xu, Yunping.,Sun, Xuejun.,Li, Mingyue.,...&Wang, Xuejun.(2021).Spatial-temporal characteristics of mercury and methylmercury in marine sediment under the combined influences of river input and coastal currents.CHEMOSPHERE,274.
MLA	Yu, Chenghao,et al."Spatial-temporal characteristics of mercury and methylmercury in marine sediment under the combined influences of river input and coastal currents".CHEMOSPHERE 274(2021).