Spatial-temporal characteristics of mercury and methylmercury in marine sediment under the combined influences of river input and coastal currents

Yu，Chenghao1; Xiao，Wenjie2,5,6; Xu，Yunping2; Sun，Xuejun3; Li，Mingyue3; Lin，Huiming1; Tong，Yindong4; Xie，Han1; Wang，Xuejun1

2021-07-01

10.1016/j.chemosphere.2021.129728

CHEMOSPHERE   影响因子和分区

0045-6535

1879-1298

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) 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) 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) 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.

Bohai sea Marine sediment Mercury Methylmercury Radiometric dating Yellow sea

SCI ; EI

英语

其他

National Natural Science Foundation of China[41630748,41676058,41821005,41977311,41977324] ; NSFC Open Research Cruise - Shiptime Sharing Project of NSFC[NORC 2014-01]

Environmental Sciences & Ecology

Environmental Sciences

WOS:000642944800033

PERGAMON-ELSEVIER SCIENCE LTD

20210609877915

Fisheries ; Health risks ; Mercury (metal) ; Mercury compounds ; Organic carbon ; Sedimentation ; Submarine geology ; Surficial sediments

Health Care:461.7 ; Oceanography, General:471.1 ; Soil Mechanics and Foundations:483 ; Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals:549.3 ; Chemical Operations:802.3 ; Organic Compounds:804.1

ENVIRONMENT/ECOLOGY

2-s2.0-85100238202

Scopus

1.Ministry of Education Laboratory of Earth Surface Process,College of Urban and Environmental Sciences,Peking University,Beijing,100871,China
2.College of Marine Sciences,Shanghai Ocean University,Shanghai,201306,China
3.Key Laboratory of Tibetan Environmental Changes and Land Surface Process,Institute of Tibetan Plateau Research,Chinese Academy of Sciences (CAS),Beijing,100101,China
4.School of Environmental Science and Engineering,Tianjin University,Tianjin,300072,China
5.Department of Ocean Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
6.Shenzhen Key Laboratory of Marine Archaea Geo-Omics,Shenzhen,518055,China

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]. CHEMOSPHERE,2021,274.

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.

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).