This study was derived from field investigations to assess bisphenol A(BPA)concentrations in the sea and river sediments of the Gulf of Gdansk.Black carbon(BC)and total organic carbon(TOC)were identified as influencing factors on the accumulation.As a result of the transportation of BC with organic matter via rivers into the Gulf of Gdansk,the highest mean concentrations(11.26 ng BPA/(g dry weight(dw))),were determined in the sediments of river estuaries.Sediments in coastal stations were characterized by the lowest mean concentrations(5.73 ng BPA/(g dw)).TOC content below 0.1% determined the sorption of BPA on BC particles in sediments,and statistically significant correlation between the concentration of BPA and the BC/TOC ratio was found in these cases.In addition,dependency between the concentration of BPA and the content of BC was discovered in sediments where the BC/TOC ratio was > 0.33. This study was derived from field investigations to assess bisphenol A (BPA) concentrations in the sea and river sediments of the Gulf of Gdansk. Black carbon (BC) and total organic carbon (TOC) were identified as influencing factors on the accumulation. As a result of the transportation of BC with organic matter via rivers into the Gulf of Gdansk, the highest mean concentrations (11.26 ng BPA / (g dry weight (dw))) were determined in the sediments of river estuaries. Sediments in coastal stations were TOC content below 0.1% determined the sorption of BPA on BC particles in sediments, and statistically significant correlation between the concentration of BPA and the BC / TOC ratio was found (5.73 ng BPA / (g dw) in these cases. In addition, dependency between the concentration of BPA and the content of BC was discovered in sediments where the BC / TOC ratio was> 0.33.