Solvent extraction of iron (III) with quercetin-6'-sulfonic acid in the presence of antipyrine into 1, 2-dichloroethane

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Other Title
  • アンチピリンによる鉄（ＩＩＩ）‐ケルセチン‐６′‐スルホン酸錯体の溶媒抽出
  • アンチピリン ニヨル テツ 3 ケルセチン 6 スルホンサン サクタイ ノ ヨ
  • アンチピリンによる鉄(III)-ケルセチン-6'-スルホン酸錯体の溶媒抽出

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Description

Solvent extraction of iron (III) with quercetin-6'-sulfonic acid was investigated spectrophotometrically. Iron (III) is extracted with quercetin-6'-sulfonic acid in the presence of antipyrine into 1, 2-dichloroethane as a Fe (III) -quercetin-6'-sulfonic acid-antipyrine which shows an absorption maximum at 430nm. The extracted complex is very stable in 1, 2-dichloroethane for a long standing. The optimal pH range for the extraction is from 3.0 to 4.0. The Fe (III): quercetin-6'-sulfonic acid : antipyrine ratio is 1:2:3. Fe (III) quercetin-6'-sulfonic acid complex may be extracted with antipyrine as an ionic-pair form, [Fe(QS)2-(H2O)2]3-·(HA+)3. Beer's law is obeyed from 0.10 to 0.70μg/ml of iron (III) in the organic phase. The molar extinction coefficient is 38000cm-1mol-1l at 430nm.

Journal

  • BUNSEKI KAGAKU

    BUNSEKI KAGAKU 29 (4), 253-258, 1980

    The Japan Society for Analytical Chemistry

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