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首页> 外文期刊>Der Pharma Chemica: journal for medicinal chemistry, pharmaceutical chemistry and computational chemistry >Development of an extractive spectrophotometric method for the determination of Fe (III) using 4-methyl 2, 3-pentanedione dioxime
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Development of an extractive spectrophotometric method for the determination of Fe (III) using 4-methyl 2, 3-pentanedione dioxime

机译：萃取分光光度法测定4-甲基2,3-戊二酮二肟中的铁（III）

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A new analytical reagent 4-methyl 2, 3-pentanedione dioxime (H2MPDDO) is proposed for the extraction and spectrophotometric determination of Fe (III). The reagent H2MPDDO reacts with iron to give yellow colored complex which can be quantitatively extracted into dichloromethane at pH 2.0. The organic extract shows maximum absorption at 235 nm where absorption due to similarly prepared reagent blank is negligible. The beer’s law is followed in the concentration range 1-10μg/ml of Fe (III). The molar absorptivity and sandell’s sensitivity of Fe (III) - H2MPDDO complex are 3.03 x 103 l/mol/cm and 0.019 μg/ml/cm2 respectively. The proposed method is rapid, sensitive, reproducible, accurate and has been satisfactory applied for determination and separation of iron (III) in synthetic mixtures. It also provides a relative inexpensive alternative to more expensive instrumental method like Atomic absorption spectrophotometer.
机译：提出了一种新的分析试剂4-甲基2，3-戊二酮二肟（H2MPDDO），用于萃取和分光光度法测定铁（III）。试剂H2MPDDO与铁反应生成黄色络合物，可以在pH 2.0的条件下将其定量萃取到二氯甲烷中。有机提取物在235 nm处显示最大吸收，其中由于类似制备的试剂空白而引起的吸收可忽略不计。铁（III）的浓度范围为1-10μg/ ml，遵循啤酒定律。 Fe（III）-H2MPDDO络合物的摩尔吸收率和sandell敏感性分别为3.03 x 103 l / mol / cm和0.019μg/ ml / cm2。所提出的方法快速，灵敏，可重现，准确，已令人满意地用于测定和分离合成混合物中的铁（III）。它还为诸如原子吸收分光光度计的更昂贵的仪器方法提供了一种相对便宜的替代方法。

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