Investigation of geochemical composition of lake sediments using ED-XRF and ICP-AES techniques

I. Szalóki, A. Somogyi, M. Braun, A. Tóth

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

The elemental composition of lake bottom sediment indicates the environmental changes of biological and geochemical processes in the water body and in the sediment-water interface. Changes in soil-forming processes and vegetation in the catchment area also influence the quantitative composition of sediment. In order to analyse sediment quantitatively, several core samples were collected from depths of 600-800 cm in a peat bog located in NE Hungary. The original wet core was divided into subsamples of 1 cm thickness, dried, homogenized and digested with nitric acid and hydrogen peroxide for inductively coupled plasma atomic emission spectrometry (Ca, Fe, Mn, Sr, Ba). The undissolved parts of the samples were analysed by energy-dispersive x-ray fluorescence spectrometry using the fundamental parameter method tor Si, Ca, K, Ti, Zr and Y. The X-ray excitation of the samples was carried out with a Siemens K710-H x-ray generator applying Mo and Cr tubes for ranges of elements 21 <Z <40 and 14 <Z <23, respectively The primary spectra of the tubes were reconstructed by measured spectra scattered from a thin (20 μm) Mylar foil. The software outputs were the intensities of the x-ray fluorescence lines of the samples and of some pure elements which were provided by independent measurements with the Mo and Cr tubes. The final results of this combined quantitative analysis were used in the evaluation of the soil-development model using multivariate statistical analysis of the elemental composition of the sediment samples.

Original languageEnglish
Pages (from-to)399-405
Number of pages7
JournalX-Ray Spectrometry
Volume28
Issue number5
Publication statusPublished - Sep 1999

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Lakes
Sediments
X rays
Chemical analysis
Spectrometry
Fluorescence
Soils
Nitric Acid
Core samples
Peat
Water
Inductively coupled plasma
Catchments
Hydrogen Peroxide
Metal foil
Statistical methods

ASJC Scopus subject areas

  • Spectroscopy

Cite this

Investigation of geochemical composition of lake sediments using ED-XRF and ICP-AES techniques. / Szalóki, I.; Somogyi, A.; Braun, M.; Tóth, A.

In: X-Ray Spectrometry, Vol. 28, No. 5, 09.1999, p. 399-405.

Research output: Contribution to journalArticle

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