2017
DOI: 10.3989/mc.2017.03116
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A new method in estimation of total hexavalent chromium in Portland pozzolan cement

Abstract: ABSTRACT:Variamine blue was used first time for the detection of hexavalent chromium from cement samples. In present method, cement was treated sequentially with water, sulphate and carbonate buffer to extract soluble, sparingly soluble and insoluble hexavalent chromium respectively. Extracted Cr (VI) was determined using variamine blue as chromogenic reagent. The determination is based on the reaction of hexavalent chromium with potassium iodide in an acid medium to liberate iodine. This oxidizes variamine bl… Show more

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