Correction factors in the determination of natural abundance of stable S isotopes in soil

Sulphur cycling in soils has been investigated using natural abundances of stable S isotopes. A procedure for the determination of δ 34S in soil samples is presented here. After dry ashing, sulphate was precipitated as barium sulphate, which was decomposed at high temperatures to sulphur dioxide for...

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Bibliographic Details
Published in:Applied radiation and isotopes 1994-08, Vol.45 (8), p.889-893
Main Authors: Eriksen, J., Johansen, H.Saaby
Format: Article
Language:English
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Summary:Sulphur cycling in soils has been investigated using natural abundances of stable S isotopes. A procedure for the determination of δ 34S in soil samples is presented here. After dry ashing, sulphate was precipitated as barium sulphate, which was decomposed at high temperatures to sulphur dioxide for mass spectrometric determination. Various mass spectrometer correction factors were examined and the total correction factor was determined by measurement of standard samples (reference material). The internal and external precision of δ 34S determination in soil samples was 0.03–0.55 and 0.20–0.58 delta value units, respectively.
ISSN:0969-8043
1872-9800
DOI:10.1016/0969-8043(94)90220-8