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首页> 外文会议>International solvent extraction conference >EXTRACTION AND SPECTROPHOTOMETRIC DETERMINATION OF COPPER(II) WITH 3-ISONITROSO-5-METHYL-2-HEXANONE AND 5-METHYL-2.3-HEXANEDIONE DIOXIME
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EXTRACTION AND SPECTROPHOTOMETRIC DETERMINATION OF COPPER(II) WITH 3-ISONITROSO-5-METHYL-2-HEXANONE AND 5-METHYL-2.3-HEXANEDIONE DIOXIME

机译：用3-异硝基-5-甲基-2-六己酮和5-甲基-2.3-六己酮二氧化二氧化硫（II）萃取和分光光度法测定铜（II）

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摘要

Simple and selective methods are proposed for the extraction of copper(II) and its spectrophotometric determination using 3-isonitroso-5-methyl-2-hexanone (HIMH) and 5-methyl-2,3-hexanedione dioxime (H_2MHDDO). Copper(III) forms greenish-yellow coloured complexes with both reagents, which can be extracted into isoamyl alcohol at pH 6.5-8.5 (HIMH) and into chloroform at pH 7.0-8.5 (H_2MHDDO). The extracted species show absorption maxima at 390 (HIMH) and 370 nm (H_2MHDDO), and the calibration curves are linear in the concentration ranges 0.1-7.0 and 0.1-10.0 μg ml~(-1) of copper(II), respectively. The molar absorptivities of the complexes are 1.001 x 10~4 (HIMH) and 6.61 x10~3 I mol~(-1) cm~(-1) (H_2MHDDO), and the Sandell's sensitivities of the proposed methods are 6.1 and 9.2 ng cm~(-2) respectively. These methods are applied for the determination of copper in synthetic mixtures, Pharmaceuticals, dyes and alloy samples.
机译：提出了使用3-异硝基-5-甲基-2-六己酮（HIMH）和5-甲基-2,3-己二氧化（H_2MHDDO）的铜（II）提取铜（II）及其分光光度法测定的简单和选择性方法。铜（III）与两种试剂形成绿色黄色复合物，其可以在pH6.5-8.5（HIMH）下并在pH7.0-8.5（H_2MHDDO）下将其萃取到异戊醇中。提取物的物种在390（HIMH）和370nm（H_2MHDDO）下，校准曲线分别在0.1-7.0和0.1-10.0μgmL〜（II）的浓度范围内，校准曲线分别是线性的。复合物的摩尔吸收率为1.001×10〜4（HIMH）和6.61×10〜3 I mol〜（-1）cm〜（-1）（H_2MHDDO），并且桑德尔的提出方法的敏感性为6.1和9.2 ng CM〜（-2）分别。这些方法用于测定合成混合物，药物，染料和合金样品中的铜。

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