J. Phys. IV France
Volume 107, May 2003
Page(s) 1381 - 1384

J. Phys. IV France
107 (2003) 1381
DOI: 10.1051/jp4:20030559

Mercury in the bottom sediments of the lower Vistula river ecosystem, Poland - A role of the anthropogenic factor

B. 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 $_{\rm geo}$) approach was used to compare "post-industrial" mercury concentration in sediments with natural ("pre-industrial") sediment mercury background.

© EDP Sciences 2003