DDT AND ITS METABOLITES IN SURFACE SEDIMENTS OF LAKES AND RIVERS OF POLAND
Journal Title: Biuletyn Państwowego Instytutu Geologicznego - Year 2012, Vol 450, Issue 450
Abstract
The contents of p,p’-DDT, p,p’-DDE, p,p’-DDD were determined in 300 samples of river sediments and 150 samples of lake sediments, collected from the whole area of Poland, by using the GC-ECD method. In river sediments the maximum contents were as follows: p,p’-DDT – 2780 μg/kg, p,p’-DDD – 913 μg/kg, and p,p’-DDE – 298 μg/kg. The presence of p,p’-DDT was detected in 38.9% of the samples, p,p’-DDE – in 90.0%, and p,p’-DDD – in 78.4%. The ratio of p,p’-DDD/p, p’-DDT in river sediments ranged from 0.08 to 46.3, and the ratio of p,p’-DDE/p,p’-DDT was in the range of 0.04–24.7. In the lake sediments the contents of p,p’-DDT ranged up to 4.7 μg/kg, p,p’-DDE – up to 63.5 μg/kg, and p,p’-DDD – up to 70.1 μg/kg. The presence of p,p’-DDT was detected in 36% of the samples, p,p’-DDD – in 96.67%, and the metabolite p,p’-DDE – in all samples. The ratio of p,p’-DDD/p,p’-DDT in lake sediments ranged from 0.4 to 112.2, and the ratio of p,p’-DDE/p,p’-DDT was in the range of 0.2–163.8. In the lake sediments, a high correlation of the contents of DDTs with the concentrations of Cd, Hg, Pb and Zn, and a significant correlation with the phosphorus and sulphur content were found. In the river sediments, a weak correlation with the TOC content is the only one noticed.
Authors and Affiliations
Izabela BOJAKOWSKA, Marzena STASIUK, Jolanta GĄSIOR
Keywords
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