Studying The Bioaccumulation Of Chemicals In Aquatic Organisms:
PCBs In Fish
Author(s)
M. Panzieri, N. Marchettini & E. Tiezzi
Abstract
Studying the bioaccumulation of chemicals in
aquatic organisms: PCBs in fish
1O^ 1O i n
Margherita Panzieri'' , Nadia Marchettini' , Enzo Tiezzi '
* Department of Chemical an d Biosystems Sciences and Technology,
University of Siena, Italy.
^A.R.C.A. Onlus (Associazione Ricerca e Consulenza Ambientale), Italy.
Abstract
PCBs are mixtures of chlorinated biphenyls with different degrees of
chlorination, are hydrophobia chemicals, very persistent and bioaccumulative in
aquatic organisms, especially in fishes that are at the end of the food chain and
are the final receptors of toxicants. PCBs can be classified as narcotics: they
produce no change in the biophase and elicit anesthetic reversible effects.
Bioaccumulation in fish can occur through the food chain (biomagnification) and
through partitioning between the water environment and the fish body
(bioconcentration) and depends both from the physicochemical properties of the
che
Keywords
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