A Modified Technique for the Preparation of SO2 from Sulphates and Sulphides for Sulphur Isotope Analyses |
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| Authors: | L. Han A. Tanweer J. Szaran S. Halas |
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| Affiliation: | 1. Isotope Hydrology Laboratory, International Atomic Energy Agency , Vienna, Austria;2. Liangfeng Han, Isotope Hydrology Laboratory, International Atomic Energy Agency , Wagramerstrasse 5, A-1400, Vienna, Austria;3. Isotope Hydrology Laboratory, International Atomic Energy Agency , Vienna, Austria;4. Mass Spectrometry Laboratory, Institute of Physics, Maria Curie-Sklodowska University , Lublin, Poland |
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| Abstract: | Abstract A modified technique for the conversion of sulphates and sulphides to SO2 with the mixture of V2O5—SiO2 for sulphur isotopic analyses is described. This technique is more suitable for routine analysis of large number of samples. Modification of the reaction vessel and using manifold inlet system allows to analyse up to 24 samples every day. The modified technique assures the complete yield of SO2, consistent oxygen isotope composition of the SO2 gas and reproducibility of δ34S measurements being within 0.10‰. It is observed, however, oxygen in SO2 produced from sulphides differs in δ18O with respect to that produced from sulphates. |
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| Keywords: | Sample preparation technique Thermal decomposition Sulphates Sulphides Sulphur isotope analyses |
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