Application of a metallized membrane electrode for the determination of gaseous sulphur compounds after reductive pyrolysis

Sulphur-containing gases are converted by non-catalytic reductive pyrolysis into an equivalent amount of H 2S, which is determined by electrochemical oxidation at a gold-plated porous membrane electrode. The calibration for H 2S is linear up to 18 ml/m 3 with a slope of 1.12 μA.m 3.ml −1. The relati...

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Bibliographic Details
Published in:Talanta (Oxford) 1987-05, Vol.34 (5), p.453-459
Main Authors: Langmaier, Jan, Opekar, Frantis̆ek, Pacáková, Vĕra
Format: Article
Language:English
Subjects:
Analytical chemistry
Chemistry
Electrochemical methods
Exact sciences and technology
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Summary:Sulphur-containing gases are converted by non-catalytic reductive pyrolysis into an equivalent amount of H 2S, which is determined by electrochemical oxidation at a gold-plated porous membrane electrode. The calibration for H 2S is linear up to 18 ml/m 3 with a slope of 1.12 μA.m 3.ml −1. The relative standard deviation for the determination of 3.7 ml/m 3 H 2S was 1.0% and the detection limit 4 μl/m. About 60 samples can be determined per hour. The method has been employed for the determination of total sulphur and individual gases after separation on a chromatographic column.
ISSN:0039-9140
1873-3573
DOI:10.1016/0039-9140(87)80161-3