Naslov
Bioaccumulation of lipid-soluble pollutants in aquatic systems

Autori
Topić Popović, Natalija ; Strunjak-Perović, Ivančica

Izvornik
Ribarstvo (1330-061X) 57 (1999), 1; 3-11

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, pregledni rad, znanstveni

Ključne riječi
bioaccumulation; bioconcretration; biomagnification; lipids; pollutants; water

Sažetak
One of the major problems of water pollution is the capability of pollutants to concentrate in aquatic organisms.Bioaccumulation and bioconcretration of such chemicals in fish render in unsuitable for human consumption. Bioconcretration of water pollutants through algae, zooplankton and other organisms, can lead to their accumulation through foo-chain, with the fish at the top of the pelagic food web. The occurence of elevated residue levels of various xenobiotics with increasing trophic level hasbeen demonstrated in a variety of aquatic environments and organisms.The increased bioconcretation occurs with increasing trophic level.The tendency of a chemical to bioconcretate has been shown to be strongly related to its lipophilicity. Trophic-level differences in bioconcretation are due largely to increased lipid content and decreased chemical elimination efficiency of organisms occupying increasing trophic levels. The acculation of pollutant is expressed as the bioconcretation factor (BCF), wich is determined as the rate of its uptake to the organism and its elimination from it plus the organism growth rate. Chemical uptake efficiency from water, excretion rate, and chemical assimilation efficiency are variable as a function of the octanol-water partition coefficient (Kow).

Izvorni jezik
Engleski

Znanstvena područja
Kemija, Biologija, Veterinarska medicina

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