Impact of anions on the heavy metals release from marine sediments.
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 approximately equal to 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.
Zhong
Ai-ping
AP
Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China.
Guo
Shu-hai
SH
Li
Feng-mei
FM
Li
Gang
G
Jiang
Ke-xu
KX
D000838:Anions / Q000737:chemistry*; D002681:China; D004785:Environmental Pollutants / Q000032:analysis / Q000737:chemistry*; D019015:Geologic Sediments / Q000032:analysis*; D019216:Metals, Heavy / Q000032:analysis / Q000737:chemistry*; D013054:Spectrophotometry, Atomic
D000838:Anions; D004785:Environmental Pollutants; D019216:Metals, Heavy