J. Phys. IV France 107 (2003) 1381
Mercury in the bottom sediments of the lower Vistula river ecosystem, Poland - A role of the anthropogenic factorB. Wyrzykowska and J. Falandysz
Department of Environmental Toxicology & Chemistry, Sobieskiego St. 18, 80-952 Gdansk, Poland
Total mercury concentrations were determined in surface layer of sediments collected in 1998-2001 from several locations along the Lower Vistula River, Poland. The wet digestion (HNO 3-H 2SO 4) method used for sample preparation was both repeatable and quantitative and allowed mercury determination by cold vapour atomic absorption spectrometry (CV-AAS). The sediment samples collected from sites located very close to, or within, the urbanized and industrialized areas showed elevated mercury concentrations, reaching up to 370 ng/g dry weight on the average. Geochemical index (I ) approach was used to compare "post-industrial" mercury concentration in sediments with natural ("pre-industrial") sediment mercury background.
© EDP Sciences 2003