モリンとの錯形成速度の差を用いるスズ(II)共存下でのスズ(IV)の蛍光定量
書誌事項
- タイトル別名
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- Fluorometric determination of tin(IV) in the presence of tin(II) based on different rates of complexation with morin.
- モリン ト ノ サク ケイセイ ソクド ノ サ オ モチイル スズ 2 キョ
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The kinetics and thermodynamics of the complexation reactions of tin(II) and tin(IV) with morin have been studied fluorometrically in sulfuric and perchloric acids to design a differential analysis of tins. The time necessary to complete the reaction in 0.53 M of the respective acids was about 5 s in sulfuric acid and about 10 s in perchloric acid for tin(II), and about 3-8 min in sulfuric acid and about 1 min in perchloric acid for tin(IV). Taking these results together with the effect of acid concentration on the fluorescence intensities of the respective complexes and morin into consideration, the conditions, in which the concentrations of morin and sulfuric acid are 8×10-4 M and 1.5 M, respectively, were selected for the determination of tin(IV) in the presence of tin(II). Under these conditions, although the fluorescence intensities of the respective complexes are almost the same, tin(II) reacts with morin about 60 times faster than tin(IV) does. Employing the difference in fluorescence intensities measured at two reaction times (20 s and 1 min) as a calibration parameter, tin(IV) up to 1× 10-5 M was selectively determined with a detection limit of 2×10-7 M. The proposed method was applied to follow the air oxidation of tin(II).
収録刊行物
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- 分析化学
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分析化学 45 (3), 265-270, 1996
公益社団法人 日本分析化学会
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詳細情報 詳細情報について
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- CRID
- 1390001204052626688
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- NII論文ID
- 110002907309
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- NII書誌ID
- AN00222633
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- COI
- 1:CAS:528:DyaK28XhslWjtbk%3D
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- HANDLE
- 10297/2453
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- NDL書誌ID
- 3947461
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- ISSN
- 05251931
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- IRDB
- NDL
- Crossref
- NDL-Digital
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可