The developed and tested method is based on the acid volatile sulphur (AVS) releasing from a sample of sediment by acidification with hydrochloric acid and sequential absorption of released hydrogen sulphide into the absorption solution of sodium hydroxide. Total sulphur absorbed in
the absorption solution is subsequently determined by inductively coupled plasma optical emission spectrometry (ICP-OES) technique. The method was tested using both model and real samples of the river sediment. Obtained results were compared with the results of iodometric determination as
the method routinely used for the AVS determination. In case of using ICP-OES with purge and trap, there is no spectral interference of calcium; therefore for the determination of sulphur, it is possible to use atomic emission line of sulphur S I 180.7 nm. The tested method provides the
results comparable with the iodometric method within the range of tested concentrations. The detection limit (LOD) of this method is 0.09 mg· S2
− L−1 in the absorption solution which corresponds to 0.23 mg S2
in a sediment. Value of LOD is comparable with the iodometric determination.
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purge and trap;
Document Type: Research Article
Research Institute of Inorganic Chemistry, Ltd, ., 400 01, Ústí nad Labem, Česká Republika
Faculty of Science, Department of Chemistry, J. E. Purkinje University, 400 96, Ústí nad Labem, Česká Republika
Publication date: September 26, 2015
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