Chemical Speciation of Elements in Sediment Samples Collected at Lake Balaton

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

A modified sequential extraction procedure was applied to determination of the distribution of seven elements (Cd, Cu, As, Pb, Cr, Ni, Zn) in sediment samples collected at Lake Balaton. The fractions were (1) exchangeable and bound to carbonate, (2) bound to Fe/Mn oxide, (3) bound to organic matter and sulfide, and (4) acid soluble. These fractions have the advantage of providing better insight into the mechanism of association of metals with mineralogical phases of the sediments. Samples were taken in three seasons and the average concentration of the elements was calculated. Based on the results determined at 15 sampling points along the lake, it seems that Lake Balaton has not yet been polluted. Concentrations of species were below the Hungarian standard levels set for soils, and most of the elements were found in the acid-soluble fraction, indicating stable compounds in sediments. There were no significant changes in the individual seasonal concentrations of elements in this short monitoring period.

Original languageEnglish
Pages (from-to)281-290
Number of pages10
JournalMicrochemical Journal
Volume58
Issue number3
Publication statusPublished - Mar 1998

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Chemical speciation
Lakes
Sediments
Acids
Carbonates
Sulfides
Biological materials
Oxides
Metals
Association reactions
Sampling
Soils
Monitoring

ASJC Scopus subject areas

  • Analytical Chemistry
  • Spectroscopy

Cite this

Chemical Speciation of Elements in Sediment Samples Collected at Lake Balaton. / Hlavay, J.; Polyák, K.

In: Microchemical Journal, Vol. 58, No. 3, 03.1998, p. 281-290.

Research output: Contribution to journalArticle

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