Dissolved oxygen drives the environmental behavior of heavy metals in coastal sediments
Liu, Xiaozhu1,2; Sheng, Yanqing1; Liu, Qunqun1,2; Jiang, Ming1,2
Source PublicationENVIRONMENTAL MONITORING AND ASSESSMENT
ISSN0167-6369
2022-04-01
Volume194Issue:4Pages:12
KeywordSediments Heavy metals Dissolved oxygen Exchange fluxes
DOI10.1007/s10661-022-09975-w
Corresponding AuthorSheng, Yanqing(yqsheng@yic.ac.cn)
AbstractIn this study, the impacts of dissolved oxygen (DO) on dynamics concentrations of heavy metals (Cu, Cd, Cr, and Pb) from estuary sediments were investigated in a 49-day laboratory simulation. The exchange flux method, Bureau Communautaire de Reference (BCR) sequential extraction procedure, and risk assessment code (RAC) were used to analyze the behavior of heavy metals. The results indicated that oxic environments promoted the concentrations of Cu and Cd in overlying water compared to the anoxic environments. The exchange fluxes showed that the diffusion of Cu, Cd, Cr, and Pb from sediments was the predominant process in the first 9 days, and a metastable equilibrium state was gradually reached in the later period under anoxic conditions. However, oxic conditions extended the time required to reach metastable equilibrium for Cu over the sediment-water (overlying water) interface (SWI). Although the reducible fractions of Cu, Cd, and Pb accounted for a large proportion of their total levels, the release ability of Cu, Cd, and Pb was limited by the high content of sulfide under anoxic conditions. The RAC values indicated that anoxic environments increased the proportion of acid-soluble fraction. The information obtained from this study highlights the potential risk for re-release of heavy metal from sediments under different redox conditions.
Funding OrganizationStrategic Priority Research Program of the Chinese Academy of Sciences ; Key Project of Shandong Provincial Natural Science Foundation ; Key Research and Development Program of Shandong Province
Indexed BySCI
Language英语
WOS KeywordSURFACE SEDIMENTS ; RISK-ASSESSMENT ; RIVER ESTUARY ; RELEASE ; FRACTIONATION ; MOBILIZATION ; ACID ; BIOAVAILABILITY ; SALINITY ; QUALITY
WOS Research AreaEnvironmental Sciences & Ecology
WOS IDWOS:000773309500002
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.yic.ac.cn/handle/133337/31385
Collection中国科学院海岸带环境过程与生态修复重点实验室
中国科学院海岸带环境过程与生态修复重点实验室_海岸带环境工程技术研究与发展中心
Corresponding AuthorSheng, Yanqing
Affiliation1.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Zone Environm Proc, Yantai, Peoples R China
2.Univ Chinese Acad Sci, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Liu, Xiaozhu,Sheng, Yanqing,Liu, Qunqun,et al. Dissolved oxygen drives the environmental behavior of heavy metals in coastal sediments[J]. ENVIRONMENTAL MONITORING AND ASSESSMENT,2022,194(4):12.
APA Liu, Xiaozhu,Sheng, Yanqing,Liu, Qunqun,&Jiang, Ming.(2022).Dissolved oxygen drives the environmental behavior of heavy metals in coastal sediments.ENVIRONMENTAL MONITORING AND ASSESSMENT,194(4),12.
MLA Liu, Xiaozhu,et al."Dissolved oxygen drives the environmental behavior of heavy metals in coastal sediments".ENVIRONMENTAL MONITORING AND ASSESSMENT 194.4(2022):12.
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