Standardization of sulfur dioxide standard gas used for the calibration with sulfonal as a primary standard

Methods for standardization of sulfur dioxide gas used for the calibration of a measuring apparatus were studied. Sulfonal, which is used as a standard substance for the organic elementary analysis, was used as a primary standard substance, and the following two standardization methods were studied....

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Published inBunseki kagaku Vol. 18; no. 3; p. 349
Main Authors MUSHA, Soichiro, NUKADA, Masami, OKANO, Toshimasa, FUDANO, Shintaro, MIZUTANI, Masaru
Format Journal Article
LanguageEnglish
Published Tokyo Japan Science and Technology Agency 22.02.1969
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Summary:Methods for standardization of sulfur dioxide gas used for the calibration of a measuring apparatus were studied. Sulfonal, which is used as a standard substance for the organic elementary analysis, was used as a primary standard substance, and the following two standardization methods were studied. (1) Sulfur oxides evolved by the combustion of sulfonal was absorbed in a hydrogen peroxide solution, and the sulfuric acid produced was determined by coulo metric titration. (2) Sulfur oxides evolved by the combustion of sulfonal was caught on the silver gauze as silver sulfate, and was converted into hydrogen sulfide by the reduc tion with hydrogen. The resulting hydrogen sulfide was absorbed in a zinc acetate solution. Methylene Blue was produced in the usual way and its concentration was determined by spectrophotometry. The latter method (Takeuchi's Method*) is recommended because it is more accurate and precise. *T. Takeuchi, et al.: Mikrochim. Ichnoanal. Acta, 1965, 635.
ISSN:0525-1931
DOI:10.2116/bunsekikagaku.18.349