Rapid and automated analytical methods for redox species based on potentiometric flow injection analysis using potential buffers

Hiroki Ohura, Toshihiko Imato

    研究成果: Contribution to journalReview article査読

    5 被引用数 (Scopus)

    抄録

    Two analytical methods, which prove the utility of a potentiometric flow injection technique for determining various redox species, based on the use of some redox potential buffers, are reviewed. The first is a potentiometric flow injection method in which a redox couple such as Fe(III)-Fe(II), Fe (CN) 6 3 - -Fe(CN) (CN) 6 4 -, and bromide-bromine and a redox electrode or a combined platinum-bromide ion selective electrode are used. The analytical principle and advantages of the method are discussed, and several examples of its application are reported. Another example is a highly sensitive potentiometric flow injection method, in which a large transient potential change due to bromine or chlorine as an intermediate, generated during the reaction of the oxidative species with an Fe(III)-Fe(II) potential buffer containing bromide or chloride, is utilized. The analytical principle and details of the proposed method are described, and examples of several applications are described. The determination of trace amounts of hydrazine, based on the detection of a transient change in potential caused by the reaction with a Ce(IV)-Ce(III) potential buffer, is also described.

    本文言語英語
    論文番号516165
    ジャーナルJournal of Automated Methods and Management in Chemistry
    2011
    DOI
    出版ステータス出版済み - 2011

    All Science Journal Classification (ASJC) codes

    • 分析化学
    • 化学工学(その他)
    • 器械工学
    • コンピュータ サイエンスの応用

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