Method of preparing H2S for an isotopic analysis

摘要

A method which enables the sulphur and/or hydrogen contained in a low quantity in hydrogen sulphide to be prepared: 1) the H2S is oxidized at a temperature and for a duration selected to obtain full oxidation of the H2S into SO2 and at least two products are obtained at the end of this step: SO2 and H2O, 2) The two products SO2 and H2O obtained at the end of step 1) are separated, 3) the isotope of the sulphur contained in the sulphur dioxide obtained during step 2) is measured and/or 4) the H2O obtained during step 2) is brought into contact with an agent capable of reducing the water to hydrogen form and 5) the isotope of the hydrogen is measured.