ISSN:
1573-2959
Source:
Springer Online Journal Archives 1860-2000
Topics:
Energy, Environment Protection, Nuclear Power Engineering
Notes:
Abstract Chlorinated hydrocarbons (hexachlorobenzene, lindane, pp′DDE, polychlorinated biphenyls) and trace elements (Hg, Se, Cd, Pb) were determined in eggs of Yellow-legged Herring Gull (Larus cachinnans) collected in an island of the Tyrrhenian Sea during the period 1981–1986. PCBs levels vary on the average between 30.4μg g−1 d.w. in 1981 to 56.1 μg g−1 d.w. in 1983. The capillary chromatograms revealed the presence of about 30 somers of PCBs without significant variations in the eggs of the same year; more than 50% of the residues is made up only three isomers: the 22'44'55', the 22'344'5' and the 22'344'55'. Average DDE residues were 7–8 times lower than those of PCBs and declined during the period (from 9.2 μg g−1 d.w. in 1981 to 4.5 μg g−1 d.w. in 1986). Cadmium and lead are present in low concentrations. The average levels of mercury and selenium are around 2–2.5 μg g−1 d.w., and a cumulative correlation, on a molar basis, exists between these two elements.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00394255
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