1. Institute of Environmental Science, South China Normal University, Guangzhou, 510631; 2. Institute of Environmental Science, Zhongshan University, Guangzhou, 510275 China
The bioaccumulation and elimination under single low concentration of cadmium and low concentration of cadmium coexistence with humic acids in Asian clam (Corbicula fluminea) were investigated under laboratory conditions.The organisms were exposed to solution containing single low concentration of cadmium (1μg·L-1) and low concentration of cadmium (1μg·L-1) + humic acid(1mg·L-1 and 10mg·L-1).The exposure time lasted for 15 days.Samples were detected after 1d、2d、3d、10d、15d and showed that the bioaccumulation effects of both of the two treatments were linearly correlative with the increasing of the accumulation time.But it was found that cadmium bioaccumulation by the mussels decreased in the presence of humic acids.After 10ds and 20ds of elimination, Cd was difficult to be eliminated after the accumulation in the clams' body in both of the treatments.Humic acids had almost no effects on the elimination of low concentration of cadmium.
曾丽璇1*, 陈桂珠2, 吴宏海1, 张秋云1, 余日清2. 水体腐殖酸影响下河蚬对低浓度镉的蓄积和释放[J]. , 2006, 25(3): 240-242.
ZENG Li-xuan1, CHEN Gui-zhu2, WU Hong-hai1, ZHANG Qiu-yun1, YU Ri-qing2. The bioaccumulation and elimination under low concentration of cadmium from Asian clam (Corbicula fluminea) in the presence of humic acids. , 2006, 25(3): 240-242.
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