Investigation on the pollution sources of bottom sediments in the Lake Balaton

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16 Citations (Scopus)

Abstract

A modified four-step sequential extraction procedure was applied to determine the distribution of elements in bottom sediment samples collected inside the Lake Balaton, from rivers of its catchment area and seven harbors around the lake. The fractions were: (1) exchangeable and bound to carbonate; (2) bound to Fe/Mn oxide; (3) bound to organic matter/sulfides; and (4) acid soluble. Samples were taken in three seasons and the mean concentration of the elements was calculated. Ten elements were investigated and Cu, Pb and Zn were chosen to discuss in detail. The pollution sources have been identified in a monitoring system. Results were compared to Hungarian soils, geochemical background values, sediment quality values (SQVs) and sediment background values (SBVs). Records showed that the average concentration of elements was usually less than that of SQVs and other data for soils. However, some extremely high concentrations at different sampling sites surpassed the geochemical background values. Most of the elements were found in the acid soluble fraction indicating stable compounds in sediments. Based on the results, it can be definitely confirmed that the quality of the sediment inside the Lake Balaton is satisfactory.

Original languageEnglish
Pages (from-to)65-78
Number of pages14
JournalMicrochemical Journal
Volume73
Issue number1-2
DOIs
Publication statusPublished - Oct 1 2002

Keywords

  • Lake Balaton
  • Sediment background values
  • Sediment quality values

ASJC Scopus subject areas

  • Analytical Chemistry
  • Spectroscopy

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