MERCURY AND LEAD ACCUMULATION, ELIMINATION AND DISTRIBUTION IN ZEBRAFISH (BRACHYDANIO RERIO) IN THE SITUATION OF WITH OR WITHOUT SEDIMENT
Experiments were designed to investigate the bioavailability of mercury and lead in water with Zebrafish (Brachydanio rerio). Their body residues were determined during the absorptions and eliminations in the situation of with and without sediment. The concentrations of mercury and lead were determined by the application of microwave digestion-atomic fluorescence spectrometry. We analyze the Relative Bioavailability Change (％)-Simple Moving Average (Rb-SMA), the dynamics parameters of elimination, determined tissues concentrations and respectively calculated removal rate. Bioavailability of mercury decreased about 10％, and that of lead decreased about 30％ in balance. In the situation of with sediment, muscle mercury absorption increased, and head, stomach uptaking of mercury decreased in zebrafishs; Mercury in tissues was easier to remove than that of without sediment in adsorption process. For lead in the situation of with sediment, bioavailability of it decreased due to muscle lead concentration significant reduced. Mercury had more ecological risks than lead. In addition, although could not affirm, former researches were underestimate mercurys, and overestimate leads human health risk.
sediment bioavailability lead mercury Zebrafish
Bi-jie HUANG Lin ZHU
College of environmental science and engineer,Nankai University,Tianjin,Peoples Republic of china College of environmental science and engineer,Nankai University,Tianjin,Peoples Republic of china;T
国际会议
北京
英文
1-5
2009-06-11（万方平台首次上网日期，不代表论文的发表时间）