Uptake and depuration of cesium in the green mussel Perna viridis

CORC > 厦门大学 > 海洋环境－已发表论文

	Uptake and depuration of cesium in the green mussel Perna viridis
	Ke, C. H. ; Yu, K. N. ; Lam, P. K. S. ; Wang, W. X. ; Ke CH(柯才焕)
刊名	http://dx.doi.org/10.1007/s002270000373
	2000-09
关键词	MYTILUS-EDULIS MACOMA-BALTHICA RADIONUCLIDES ACCUMULATION RETENTION CS-137 BIOACCUMULATION RADIOCESIUM METAL FISH
英文摘要	The accumulation and depuration of Cs in the green mussels (Perna viridis) commonly found in the subtropical and tropical waters were studied under the laboratory conditions using radiotracer techniques. Following an initial rapid sorption onto the mussel's tissues, uptake of Cs exhibited linear patterns over a short exposure time (8 h) at different ambient Cs concentrations. The concentration factor was independent of ambient Cs concentration. The calculated uptake rate and initial sorption constant of Cs were directly proportional to the ambient Cs concentration. The calculated uptake rate constant from the dissolved phase in the mussels was as low as 0.0261 g(-1) d(-1) Uptake rates of Cs in the mussels were inversely related to the ambient salinity. Uptake increased about twofold when the salinity was reduced from 33 to 15 ppt. The effect of sa linity on Cs uptake was primarily due to the change in ambient Kf concentration. The uptake rate decreased in a power function with increasing tissue dry weight of the mussels, although the initial sorption was not related to the mussel's body size. The efflux rate constant of Cs in the mussels was 0.15 to 0.18 d(-1), and was the highest recorded to date among different metals in marine bivalves. The efflux rate constant also decreased in a power function with increasing tissue dry weight of mussels. A simple kinetic model predicted that the bioconcentration factor of Cs in the green mussels was 145, which was higher than measurements taken in their temperate counterparts. The bioconcentration factor also decreased in a power function with increasing tissue dry weight of mussels.
语种	英语
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/60326]
专题	海洋环境－已发表论文
推荐引用方式 GB/T 7714	Ke, C. H.,Yu, K. N.,Lam, P. K. S.,et al. Uptake and depuration of cesium in the green mussel Perna viridis[J]. http://dx.doi.org/10.1007/s002270000373,2000.
APA	Ke, C. H.,Yu, K. N.,Lam, P. K. S.,Wang, W. X.,&柯才焕.(2000).Uptake and depuration of cesium in the green mussel Perna viridis.http://dx.doi.org/10.1007/s002270000373.
MLA	Ke, C. H.,et al."Uptake and depuration of cesium in the green mussel Perna viridis".http://dx.doi.org/10.1007/s002270000373 (2000).