OCCURRENCE OF SOME PESTICIDES IN THE DISSOLVED WATER PHASE OF THE DANUBE RIVER AND ITS THREE MAJOR TRIBUTARIES

Vasile Ion Iancu, Toma Galaon, Jana Petre, Liliana Cruceru, Luoana Florentina Pascu
2015 SIMI 2015   unpublished
Polar organic contaminants like organophosphate insecticides (fenthion, disulfoton, azinphos-ethyl, azinphos-methyl, dimethoate, omethoate, demeton-s-methyl) and herbicide (bentazone) were analysed in the surface water of Danube River and its tributaries (Arges, Jiu and Olt). Analyses were performed by solid-phase extraction (SPE) followed by triple-quadrupole liquid chromatography mass spectrometry (LC-MS/MS). The surface water samples were found to be contaminated by disulfoton over the
more » ... oton over the admissible value (7.5 -10.7 ng/l), demeton-s-methyl (4.67-19.8 ng/l), dimethoate (0.21-2.8 ng/l). The pesticides detected with the highest frequency were omethoate and bentazon in concentrations ranging from 6.5ng/l to 16 ng/l and from 0.34ng/l to 18.8 ng/l, respectively. The highest concentrations of pesticides were recorded in Danube River in Calafat sampling point: demeton-s-methyl 19.8 ng/l, omethoate 17 ng/l.
doi:10.21698/simi.2015.0021 fatcat:orcp2o7f3fcmvfhmwwjpm4znai