Speciation, distribution, and potential ecological risk assessment of heavy metals in Xiamen Bay surface sediment
Based on the survey of surface sediment in Xiamen Bay in October 2011,the speciation,distribution,and potential ecological risk assessment of heavy metals (Cu,Pb,Zn,Cd,and Cr) in this area were studied using the sequential extraction method and ecological risk assessment method.The results indicated: (1) the total concentrations of these heavy metals were influenced by runoff,industrial wastewater,and sewage,and were all higher in the coastal area than the offshore area while the highest area of Pb was a little farther away from the coastal water due to atmosphere deposition; (2) sequential extractions suggested that Cu was mainly composed with residual and Fe/Mn-oxide bound fractions,Pb was bound to Fe/Mn-oxide,Zn and Cr were dominated by residual,and Cd bound to exchangeable and carbonate fractions; (3) the order of migration and transformation sequence was Cd>Pb>Cu>Zn>Cr and the degree of pollution was Cd>Pb>Cu>Zn>Cr; and (4) the ratios of the secondary and primary phases showed that Zn and Cr were both clean,Cu may be polluted,Pb was moderately polluted,while Cd was heavily polluted.
Xiamen Bay heavy metals speciation distribution ecological risk
LIN Cai LIU Yang LI Wenquan SUN Xiuwu JI Weidong
Third Institute of Oceanography,State Oceanic Administration,Xiamen 361005,China College of Ocean and Earth Science,Xiamen University,Xiamen 361005,China
国内会议
福建省海洋学会2014年学术年会暨福建省科协第十四届学术年会分会场
福建平潭
英文
812-824
2014-09-01（万方平台首次上网日期，不代表论文的发表时间）