2,2′-dihydroxyazobenzene derivatives as reagents for trace metal determination by ion-pair reversed-phase high-performance liquid chromatography with spectrophotometric detection

Hitoshi Hoshino, Kouji Nakanot, Takao Yotsuyanagi

研究成果: Article査読

59 被引用数 (Scopus)

抄録

2,2′-Dihydroxyazobenzene and five substituted analogues have been examined as pre-column chelating agents for the determination of trace metal ions by reversed-phase high-performance liquid chromatography (RP-HPLC) with spectrophotometric detection. Seven metal ions, viz., AlIII, CoIII, CuIII, FeIII, MoVI, VV and ZnII, were detected as their azo chelates in the ion-pair RP mode. The optimum conditions, including pH for colour formation, column used, mobile phase parameters and detection wavelength, were investigated for each individual reagent. The method was applied to the determination of AI and Fe in coal fly ash samples. The kinetic nature and the forms of the chelates responsible for the selectivity of RP-HPLC towards metal ions are discussed in terms of "kinetic differentiation" together with ion-pair RP partition phenomena.

本文言語English
ページ(範囲)133-137
ページ数5
ジャーナルThe Analyst
115
2
DOI
出版ステータスPublished - 1990 1 1

ASJC Scopus subject areas

  • 分析化学
  • 生化学
  • 環境化学
  • 分光学
  • 電気化学

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