Topic
Color reaction
About: Color reaction is a research topic. Over the lifetime, 1194 publications have been published within this topic receiving 19579 citations.
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TL;DR: In this article, a violet chelate (λmax540 mμ) with pyrogallol red at pH 4.4 was established by the continuous variation and mole ratio methods using absorbance data.
7 citations
TL;DR: The precision and reproducibility of chlorophosphonazo I color reaction spectrophotometry (CCRS) for the selective determination of Cr3+ was improved to be acceptable standards and established is an accurate, reproducible and inexpensive method.
Abstract: A method capable of accurately and selectively measuring Cr3+ in water is required and was therefore studied. The precision and reproducibility of chlorophosphonazo I color reaction spectrophotometry (CCRS) for the selective determination of Cr3+ was improved to be acceptable standards. The CCRS established is therefore an accurate, reproducible and inexpensive method. It also has reasonably good sensitivity and selectivity, and a high sample output. This method should be readily adapted for the routine and selective determination of Cr3+ in bottled mineral drinking water with (or without) the supplementation of Cr3+ or in natural water such as mineral or pipe water with the presence of Cr6+.
7 citations
TL;DR: In this article, the microgram detection and determination of picric acid with sodium hypochlorite solution is based on its oxidation in alkaline solution and chlorination with excess of chlorine present in hypochemically enriched solution.
7 citations
Journal Article•
TL;DR: A colorimetric method, based on the Baljet color reaction and requiring a photoelectric colorimeter, is accurate within ±5 per cent.
Abstract: 1. A colorimetric method for the assay of tablets of digitoxin containing 0.1 mg. and 0.2 mg. of digitoxin per tablet has been described. 2. The method, based on the Baljet color reaction and requiring a photoelectric colorimeter, is accurate within ±5 per cent.
7 citations
7 citations