Heavy metals in sediments of Yellow Sea and East China Sea: Chemical speciation,distribution,influence factor,and contamination  

作　　者：Miao ZHAO Shenghui ZHANG Haitao HAN Dawei PAN 

机构地区：[1]Key Laboratory of Coastal Environmental Processes and Ecological Remediation,Yantai Institute of Coastal Zone Research(YIC),Chinese Academy of Sciences(CAS),Coastal Environmental Processes,Research Center for Coastal Environment Engineering Technology of Shandong Province,YIC,CAS,Yantai 264003,China [2]University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Journal of Oceanology and Limnology》2021年第4期1277-1292,共16页海洋湖沼学报（英文）

基　　金：Supported by the National Key Research and Development Program of China(No.2016YFA0601301);the Original Innovation Project of Chinese Academy of Sciences(No.ZDBS-LY-DQC009);the National Natural Science Foundation of China(No.42006047);the Key Research and Development Plan of Shandong Province(No.2017GHY215002);the Yantai City(No.2017ZH096)。

摘　　要：Metal species and the degree of environmental pollution are related to the hydrogen sulfide(H_(2)S),an important product of early diagenesis that can react with metals to form stable compounds.To investigate the eff ects of H_(2)S to metals and evaluate metal environment eff ect in the sediments of the East China Sea(ECS)and Yellow Sea(YS),geochemical characteristic and spatial distribution of nine heavy metals and H_(2)S profile were studied.Higher H_(2)S content and lower metal content was observed in the sediments 10 cm in depth in the North Yellow Sea and the west coast of South Korea.The pollution load index(I_(pl))indicates that the southern coast of Shandong Peninsula underwent moderate pollution(I_(pl)=1)of heavy metals and no heavy metal pollution appeared in other areas(I_(pl)<1).To some extents,the ecological risk of Cd and As enrichment was moderately severe in all stations.The chance of heavy metal combination to be toxic in ECS and YS during summer was 21%.In addition,correlation between H_(2)S content and metals in both solid and porewater phases was obvious,corroborating important eff ect of H_(2)S on metal distribution.Moreover,H_(2)S could aff ect the spatial distributions of heavy metals in porewater directly and be indicative of potential biological eff ects of combined toxicant groups in the study region.

关 键 词：hydrogen sulfide heavy metal East China Sea and Yellow Sea sediment POREWATER risk assessment 

分 类 号：X55[环境科学与工程—环境工程]