Abstract
Copper(II) has been spectrophotometrically determined after extraction of its 1-phenyl-4, 4, 6-trimethy1-1H, 4H-pyrimidine-2-thiol complex into isobutyl methyl ketone (MIBK). Extraction is maximum (94%) in the presence of 0.2-0.5 M NaOH in aqueous phase. Optimum concentration range for determination at λmax 400 nm is 2.5-10.2 ppm. The molar absorptivity and Sandell's sensitivity are 7×1031 mole-1cm-1 and 0.009 μg cm-2respectively. Interference of cations and anions found commonly associated with copper has been studied. Copper contents in the samples of human hair, goat liver, blood sera and alloys have been estimated.
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