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Demonstrates the effective separation of zinc from cadmium using potassium iodide, indicating a new detection method.
Chromatographic separation of zinc from cadmium and detection and determination of minute quantity 9f the former in the presence of the latter were studied. Zinc and cadmium could not be separated from each other by developing with water. When potassium iodide was added, however, cadmium, forming a complex, moved to the front of the solvent zone, while zinc remained at the original position, and they were completely separated. Thus 3 γ of zinc could be determined in the presence of 1, 000 times as much cadmium and 0.06 γ of the former could be detected in the presence of 100, 000 times as much the latter.
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OKA et al. (1951) studied this question.
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