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Autori: CECILIA ROMAN, MIRELA MICLEAN, MARIUS ROMAN, LĂCRIMIOARA ŞENILĂ, OANA CADAR, ERIKA LEVEI.
The distribution of 18 organochlorine pesticides (OCPs) in the aquatic ecosystem from Danube River (Calafat - Turnu Măgurele sector), Romania was investigated. A total of 16 samples, comprising of 6 surface water and 10 sediment samples, was collected in October 2012 to evaluate the residue of OCPs in Danube River and its two tributaries (Jiu and Olt) using solvent extraction followed by capillary gas chromatography with electron capture detector. The pollution indices were calculated to evaluate OCP’s pollution potential, as follows: concentration factor and degree of contamination for sediments, and also contamination factor and contamination index for surface water. The obtained concentrations were below their corresponding threshold values set in Romanian legislation, indicating that harmful effects are unlikely to occur. The calculated values for pollution indices suggested no potential environmental risk.
Key words: organochlorine pesticides, contamination indexes, Danube River, water, sediment
