Journal
JOURNAL OF ENVIRONMENTAL SCIENCES
Volume 18, Issue 6, Pages 1216-1220Publisher
SCIENCE PRESS
DOI: 10.1016/S1001-0742(06)60065-X
Keywords
marine sediments; anions; heavy metals; release
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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-, SO42- and HCO3- on the release of Cd, Pb, Cu and Zn from the sediments. The results showed that the sequences about the impact of the three anions were Cl- > HCO3 > SO42-. 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 Cl- content and the quantity of Cd released from the marine sediment, whereas there was no significant relationship between Cl-content and amount of Cu and Zn released. For SO42- and HCO3-, the release of the heavy metals from marine sediments was not obvious.
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