Optimization of conditions for the determination of boron by a ruthenium(II) complex having diol moiety: A mechanistic study

Eiko Nakano, Satoshi Iwatsuki, Masahiko Inamo, Hideo D. Takagi, Koji Ishihara*

*この研究の対応する著者

研究成果: Article査読

12 被引用数 (Scopus)

抄録

Two ruthenium(II) complexes, [Ru(bpy)2(dhbpy-H-1)]+ and [Ru(bpy)2(dhphen)]2+ (bpy = 2,2′-bipyridine, dhbpy = 3,3′-dihydroxy-2,2′-bipyridine, dhphen = 5,6-dihydroxy-1,10-phenanthroline) were examined for use as a colorimetric reagent for the determination of boron. The reactions of boric acid with these two complexes were thermodynamically and kinetically studied in detail in order to specify the reactive species and to set up optimum condition for the determination of boron. The detailed analysis of the kinetic data for the reaction of the latter water-soluble complex showed that both boric acid and borate ion were reactive in an alkaline solution. The thermodynamically and kinetically optimum pH for the determination of boron was ca. 9 at 25 °C. A spectrofluorimetric determination of boron with the latter complex was attempted at 600 nm with excitation at 360 nm, and at pH 8.9 using CHES (N-cyclohexyl-2-aminoethanesulfonic acid) buffer. It was found that a trace amount of boron as low as ca. 2 × 10-5 M (∼1 ppm) could be detectable.

本文言語English
ページ(範囲)533-538
ページ数6
ジャーナルTalanta
74
4
DOI
出版ステータスPublished - 2008 1月 15

ASJC Scopus subject areas

  • 分析化学

フィンガープリント

「Optimization of conditions for the determination of boron by a ruthenium(II) complex having diol moiety: A mechanistic study」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル