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 paper, a simple method for the determination of boron in plant extracts is described, which utilizes injection of 1.0 ml of an acid plant digest into a 0.1 M hydrochloric acid stream, with further addition of a buffer-masking solution and azomethine-H as the colour-forming reagent.
60 citations
TL;DR: In this paper, a sensitive quantitative method for determination of the peroxide value of fats and oils is reported which is based on the color reaction with diphyenyl carbohydrazide discovered by Stamm.
Abstract: A sensitive quantitative method for determination of the peroxide value of fats and oils is reported which is based on the color reaction with diphyenylcarbohydrazide discovered by Stamm.
60 citations
TL;DR: The analytical properties of 1-phenyl-1,2-propanedione-2-oxime thiosemi-carbazone (PPDOT) are described for the first time and these colour reactions have been advantageously used for the simultaneous spectrophotometric determination of copper( II) and nickel(II) in synthetic mixture and also in edible oils and seeds.
60 citations
TL;DR: In this paper, a method is described by which unsaturated fatty acid esters can be separated and identified by reversed-phase paper chromatography, based upon the formation of the mercuric acetate addition compounds of the esters and the detection of the compounds on the chromatograms, using the sensitive color reaction with diphenyl carbazone.
Abstract: A method is described by which unsaturated fatty acid esters can be separated and identified by reversed-phase paper chromatography. The procedure is based upon the formation of the mercuric acetate addition compounds of the esters and the detection of the compounds on the chromatograms, using the sensitive color reaction with diphenylcarbazone. The application of this technique to the analysis of the component unsaturated acids of natural fats has been examined, and tetradecenoic acid in olive oil and hexadecenoic acid in linseed oil both formerly unidentified have been detected as the minor component acids by means of the method. The preliminary investigation on the absorption spectra of diphenylcarbazone complexes derived from the addition compounds has been made to bring the method into quantitative use.
59 citations
TL;DR: A simple screening method for isolation and determination of the total content of some sulfonamides in milk using solid-phase extraction and a color reaction is described, which produces intense violet-red color and can be easily used both for quantitation of sulf onamides using spectrophotometry and for naked-eye semi-quantitative estimation.
56 citations