RCEES OpenIR  > 环境纳米技术与健康效应重点实验室
Effects of physical disturbance of sediment on the cycling of mercury in coastal regions
Wang, Wenjie; Wang, Yingjun; Li, Yanbin; Song, Yue; Liu, Guangliang; Yin, Yongguang; Cai, Yong
AbstractMercury (Hg) is a global pollutant of health concern due to formation and bioaccumulation of methylmercury (MeHg) during its biogeochemical cycle. Coastal areas are important regions in the biogeochemical cycling of Hg (Liu et al., 2017), where often-occurring natural and anthropogenic perturbations affect Hg transport and transformation and the associated health risk from Hg. The rapidly growing mariculture associated with the rising global demand for food may have a profound effect on coastal Hg cycling, due to the environmental alterations (e.g., resuspension and sedimentation) caused by maricultural activities (e.g., bottom sowing and harvesting). Through simulating the effect of water scouring, a common harvesting method, this study investigated Hg migration and distribution in particulate and dissolved phases in Laizhou Bay of Bohai Sea, China, where mariculture exists extensively. Particulate total and methyl Hg (PTHg and PMeHg) in water (expressed as ng/L) increased sharply due to the resuspension of sediment, but decreased rapidly after a one-off scouring event. When normalized by particle mass, PTHg and PMeHg (ng/g) in suspended sediment particles were significantly higher than that in the initial sediment, suggesting a higher distribution coefficient and higher affinity to bind Hg in the suspended particles. This may be due to the smaller particle sizes, and higher contents of organic matter and Fe/Mn of suspended sediments compared to the initial sediment. While the concentrations of dissolved THg (DTHg) in water column showed minimum changes or decreased, dissolved MeHg (DMeHg) concentrations increased sharply after the perturbation, due to the possible release of MeHg from porewater and potential Hg methylation during the event. These results provide fundamental information needed for ecological and health risk assessment of Hg in mariculture, and highlights the increased mobility and bioaccumulation of MeHg during anthropogenic perturbations in these areas.
Department环境纳米技术与健康效应重点实验室 ; 环境纳米技术与健康效应重点实验室
Document Type期刊论文
Affiliation1.Shandong Univ, Sch Environm Sci & Engn, Shandong Key Lab Environm Proc & Hlth, Qingdao 266237, Peoples R China
2.Ocean Univ China, Frontiers Sci Ctr Deep Ocean Multispheres & Earth, Key Lab Marine Chem Theory & Technol, Minist Educ, Qingdao 266100, Peoples R China
3.Florida Int Univ, Dept Chem & Biochem, Miami, FL 33199 USA
4.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China
Recommended Citation
GB/T 7714
Wang, Wenjie,Wang, Yingjun,Li, Yanbin,et al. Effects of physical disturbance of sediment on the cycling of mercury in coastal regions[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2022,838(0):156298.
APA Wang, Wenjie.,Wang, Yingjun.,Li, Yanbin.,Song, Yue.,Liu, Guangliang.,...&Cai, Yong.(2022).Effects of physical disturbance of sediment on the cycling of mercury in coastal regions.SCIENCE OF THE TOTAL ENVIRONMENT,838(0),156298.
MLA Wang, Wenjie,et al."Effects of physical disturbance of sediment on the cycling of mercury in coastal regions".SCIENCE OF THE TOTAL ENVIRONMENT 838.0(2022):156298.
Files in This Item: Download All
File Name/Size DocType Version Access License
Effects of physical (2228KB)期刊论文出版稿开放获取CC BY-NC-SAView Download
Related Services
Recommend this item
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Wang, Wenjie]'s Articles
[Wang, Yingjun]'s Articles
[Li, Yanbin]'s Articles
Baidu academic
Similar articles in Baidu academic
[Wang, Wenjie]'s Articles
[Wang, Yingjun]'s Articles
[Li, Yanbin]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Wang, Wenjie]'s Articles
[Wang, Yingjun]'s Articles
[Li, Yanbin]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Effects of physical disturbance of sediment on the cycling of mercury in coastal regions.pdf
Format: Adobe PDF
All comments (0)
No comment.

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.