Liquid-liquid extraction of copper(II) with cryptand 222 with erythrosine B as the counter-ion |
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| Authors: | Mayuri N. Gandhi Shripad M. Khopkar |
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| Affiliation: | (1) Centre for Environmental Science and Engineering, Indian Institute of Technology, 400 076 Powai, Bombay, India;(2) Present address: Chemical Engineering Division, Department of Chemical Technology, University of Bombay, 400019 Matunga, Bombay, India |
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| Abstract: | ![]()
Copper is extracted at pH 5.5 with 3 × 10–4M cryptand 222 in dichloromethane with 3 × 10–4M erythrosine B as the counter-ion. It can be stripped with 0.5M perchloric acid and determined by atomic absorption spectrometry at 324.7 nm. Copper has been separated from multicomponent mixtures containing zinc, mercury, iron, cobalt, nickel and manganese, which are generally encountered in environmental samples. |
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| Keywords: | solvent extraction cryptand 222 copper(II) erythrosine B environmental samples separation |
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