Solid-phase extraction of metal ions and their estimation in vitamins, steel and milk using 3-hydroxy-2-methyl-1,4-naphthoquinone-immobilized silica gel |
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Authors: | Garg B S Bist J S Sharma R K Bhojak N |
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Institution: | Department of Chemistry, University of Delhi, Delhi 7, India |
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Abstract: | 3-Hydroxy-2-methyl-1,4-naphthoquinone-immobilized silica gel has been used for the adsorption and estimation of copper, cobalt, iron and zinc by both batch and column techniques. The distribution coefficient D determined for each metal ion was as follows (ml g1): Fe, 3.6 × 102; Cu, 3.9 × 102; Co, 3.8 × 102; Zn, 4.1 × 102. Methods have been developed to estimate zinc, copper and cobalt in milk, steel and vitamin samples respectively. |
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Keywords: | 3-Hydroxy-2-methyl-1 4-naphthoquinone-immobilized silica gel Metal ions Milk Solid-phase extraction Steel Vitamins |
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