Bioaccumulation and Partitioning of Cadmium within the Freshwater MusselDreissena polymorphaPallas
作者:
Rüdiger Bias,
Ludwig Karbe,
期刊:
Internationale Revue der gesamten Hydrobiologie und Hydrographie
(WILEY Available online 1985)
卷期:
Volume 70,
issue 1
页码: 113-125
ISSN:0020-9309
年代: 1985
DOI:10.1002/iroh.19850700110
出版商: Akademie Verlag, Berlin
关键词: bioaccumulation;cadmium;mussels;radio‐tracer methods
数据来源: WILEY
摘要:
AbstractKinetics of uptake, partitioning and elimination of cadmium were investigated in experimental studies with the freshwater mussel,Dreissena polymorpha. The radioactive cadmium isotopes109Cd and115Cd were used as tracers. Shells, soft parts and body fluid of the mussel exhibited considerable differences in accumulation and elimination. Accumulation factors up to more than 70,000 were calculated for the periostracum, whereas accumulation factors for the whole mussels ranging up to 3,000 were calculated. The shells bound a great deal of cadmium, but only loosely, and the metal could be readily eliminated after transfer to uncontaminated water. In contrast, no significant amounts of the cadmium incorporated in the soft parts were eliminated. The results indicate that the major portion of cadmium in the soft parts is strongly bound and cannot be eliminated by exchange processes.
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