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Title of Journal: Anal Bioanal Chem

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Abbravation: Analytical and Bioanalytical Chemistry

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Springer-Verlag

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DOI

10.1016/0021-9517(77)90197-x

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1618-2650

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Speciation of sulfur in individual aerosol particl

Authors: B L W Höflich S Weinbruch H M Ortner
Publish Date: 2003/11/12
Volume: 378, Issue: 1, Pages: 167-170
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Abstract

The oxidation state of sulfur has been determined by measuring the energy shift of the S K α line by wavelengthdispersive electronprobe microanalysis On flat polished samples the energy shift between sulfate S+6 and sulfide S2 was 13 eV in good agreement with previous literature data The observed energy shift of the S K α line is dominated by the change of the valence state of sulfur—the effects of coordination geometry and nearest neighbours are small The relationship between the energy shift of the S K α line and the oxidation number of sulfur is linear to a first approximation The effect of particle geometry on the position of the S K α line is usually small and introduces an error of approximately half an oxidation number The apparent sulfur valence states observed for individual aerosol particles from work places in a nickel refinery are highly variable and most probably result from different mixtures of the two endmembers sulfide and sulfate

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