Impact of anions on the heavy metals release from marine sediments  

作　　者：ZHONG Ai-ping GUO Shu-hai LI Feng-mei LI Gang JIANG Ke-xu 

机构地区：[1]Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China [2]Graduate School of Chinese Academy of Sciences, Beijing 100039, China [3]Institute of Environmental Science, Huludao 125000, China

出　　处：《Journal of Environmental Sciences》2006年第6期1216-1220,共5页环境科学学报（英文版）

基　　金：The National Basic Research Program (973) of China (No. 2004CB3418501)

摘　　要：Marine sediments from Lianshan Bay in Huludao, China, were studied in laboratory. A series of simulated experiments were carried out to investigate the influences of three kinds of anions CL^-, SO4^2- and HCO3^- on the release ofCd, Pb, Cu and Zn from the sediments. The results showed that the sequences about the impact of the three anions were Cl^-〉HCO3^-〉SO4^2＋. The release potential of heavy metals in the presence of each anions was in the following order： Cd≥Cu 〉Zn≈Pb. The correlations were positive between CI content and the quantity of Cd released from the marine sediment, whereas there was no significant relationship between CI content and amount of Cu and Zn released. For SO4^2- and HCO3^-, the release of the heavy metals from marine sediments was not obvious.Marine sediments from Lianshan Bay in Huludao, China, were studied in laboratory. A series of simulated experiments were carried out to investigate the influences of three kinds of anions CL^-, SO4^2- and HCO3^- on the release ofCd, Pb, Cu and Zn from the sediments. The results showed that the sequences about the impact of the three anions were Cl^-〉HCO3^-〉SO4^2＋. The release potential of heavy metals in the presence of each anions was in the following order： Cd≥Cu 〉Zn≈Pb. The correlations were positive between CI content and the quantity of Cd released from the marine sediment, whereas there was no significant relationship between CI content and amount of Cu and Zn released. For SO4^2- and HCO3^-, the release of the heavy metals from marine sediments was not obvious.

关 键 词：marine sediments ANIONS heavy metals RELEASE 

分 类 号：X131.2[环境科学与工程—环境科学] X55