Flow injection analysis of cobalt(II) by catalytic oxidations of stilbazo andpyrocatechol violet.

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概要

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• Catalytic oxidations of ten organic dyes with an aromatic-hydroxyl or -amino functional group have been studied in the presence of metal ions such as cobalt(II), copper(II), and vanadium(V). Of these dyes, six were found to be effectively oxidized and decolorized specifically by one of these metals. 4,4′-Bis(3,4-dihydroxyphenylazo)stilbene-2,2′-disulfonic acid diammonium salt (Stilbazo) and 3,3′,4′-trihydroxyfuchsone-2″-sulfonic acid (Pyrocatechol Violet) were found to be promising for determining trace amounts of cobalt(II). The optimum analytical conditions have been studied for these two compounds with the aid of a flow injection analysis technique. The both reagents can be used to determine cobalt(II) down to 1 ppb.

• 公益社団法人 日本化学会の論文

著者

• Higashi Atsuya

  Department of Chemistry, Faculty of Science, Kumamoto University

関連論文

• Flow injection analysis of cobalt(II) by catalytic oxidations of stilbazo andpyrocatechol violet.

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