Estimation of metals as sulphides: Atmospheric oxidation of alkali sulphides |
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| Authors: | IK Taimni GBS Salaria |
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| Institution: | Chemical Laboratories, University of Allahabad, AllahabadIndia |
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| Abstract: | The atmospheric oxidation of sodium and ammonium sulphide reagents has been studied. It has been shown that if the reagents are prepared by passing hydrogen sulphide from 2–4 minutes in alkali hydroxide solutions at a temperature below 5° C they remain unoxidized for a considerable time, and the sulphide precipitates produced by them in gravimetric analysis are therefore free from sulphur. |
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