Abstract
Abstract Aqueous chloropalladate(II) solutions absorb tioether form an air flow leading to the formation of a complex extractable into benzene. The UV absorbance of the organic complex solution is proportional to the amount of thioether. Since all light thioether homologues absorb in the same spectral range with very similar molar absorptivities the method can be used for the determination of this class of compounds relevant for atmospheric sulphur cycle studies. The preparation of test gas samples containing known amounts of di-n-propysulphide using either capillary diffusion tubes or total evaporation of benzenethioether solutions is described. An interference study of some common gaseous compounds such as carbon monoxide, nitrogen oxides, carbon disulphide, carbonyl sulphide, ethylmercaptan, sulphur dioxide, dimethyl-sulphxide, which may be present in the ambient air together with thioethers is also made.
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