Determination of bisphenol A traces in water samples from the Vrbas River and its tributaries, Bosnia and Herzegovina

The bisphenol A (BPA) concentration was determined in 12 surface water samples of the Vrbas River and its five tributaries. were taken area that belongs to city Banja Luka (Bosnia Herzegovina). BPA isolated using micro liquid?liquid extraction followed by derivatization gas chromatography?mass spectrometry analysis (GC?MS). Silylation used as a method increase volatility allow GC?MS determination BPA. limits detection (LOD) quantification (LOQ), obtained validating procedure, at 4 10 ng L-1, respectively. concentrations ranged between 33 354 all above LOQ value. lowest amount found sample collected river Vrbas, near Svrakava estuary upstream from Luka. highest recorded confluence Crkvena rivers, which is located center. This study shows population human activity could affect level environment.