DETERMINATION OF SOME ORGANOCHLORINE PESTICIDES IN THE WATERS OF THE PRUT RIVER.

In this paper, an investigation was carried out on some organochlorine pesticides in water samples collected from the Prut River on the segment Costesti-Stinca - Giurgiulesti during March 2016. The studies were conducted at the Institute of Zoology, Laboratory of Hydrobiology and Ecotoxicology, Academy of Sciences of Moldova. The quantitative analysis of sample extractions was carried out in conformity with the EPA 8081A method at gas chromatograph Clarus 500 with a capillary column Elite CLP (30m×0.32mm ID, 0.50 μm film) and ECD detector. Among 17 studied pollutants, three compounds (γ-BHC, 4.4'-DDE, 4.4-DDD) were detected. The concentration of γ-BHC ranged from 0.116 to 0.144 μg/1; of4.4-DDE ranged from 0.129 to 0.187 and 4.4-DDE was detected in only one sample site - Costesti-Stinca - in concentration of 0.362 μg/1. [ABSTRACT FROM AUTHOR]