Results 221 to 230 of about 84,990 (266)
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DEVELOPMENT OF AN INDICATOR DISPLACEMENT ASSAY REAGENT FOR SACCHARIDE QUANTITATION
2020Boronic acid-appended molecules have been popular in classical guest-host interactions with saccharides that use an integrated indicator-receptor motif. Though the literature shows a number of novel sensors varying in degrees of synthetic difficulty and water solubility, such sensor systems were never refined into a working analytical tool. A promising
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Formazan-Containing Solid-Phase Reagent Indicator Systems for Environmental Analysis
Russian Journal of General Chemistry, 2018Research results on synthesis and application of solid-phase reagents containing formazan groups were considered. The influence of the composition and structure of immobilized organic ligands on the sorption and analytical properties of the test-tools obtained were discussed.
Maslakova, T. I. +3 more
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Journal of Hazardous Materials, 2021
Fenton oxidation can effectively improve the dewaterability of aged sludge. Quantification of the addition of optimal reagents is central to the conditioning and dewatering of aged sludge. Improving the accuracy of quantification is significant to promote cost effectiveness.
Xun Tan +8 more
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Fenton oxidation can effectively improve the dewaterability of aged sludge. Quantification of the addition of optimal reagents is central to the conditioning and dewatering of aged sludge. Improving the accuracy of quantification is significant to promote cost effectiveness.
Xun Tan +8 more
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Preparation of reagent indicator papers with silver triangular nanoplates for chemical analysis
Moscow University Chemistry Bulletin, 2017An impregnation method to prepare reagent indicator papers with silver triangular nanoplates (TNPs) is developed. The conditions for obtaining modified papers (type of paper, method for applying TNPs, and drying conditions) allowing for an acceptably uniform distribution of the TNPs are chosen. The spectral characteristics of the prepared materials are
V. V. Apyari +5 more
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Analytica Chimica Acta, 1977
Abstract Chlorpromazine hydrochloride (CPA) has been tested as indicator in the titration of molybdenurn(V) with cerium(IV)sulphate at room temperature in sulphuric acid medium. It gives a sharp, reversible colour change from colourless to dark-red at the equivalence point.
H. Puzanowska-Tarasiewicz +2 more
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Abstract Chlorpromazine hydrochloride (CPA) has been tested as indicator in the titration of molybdenurn(V) with cerium(IV)sulphate at room temperature in sulphuric acid medium. It gives a sharp, reversible colour change from colourless to dark-red at the equivalence point.
H. Puzanowska-Tarasiewicz +2 more
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Analytica Chimica Acta, 1972
Abstract Fluorescence-quenched solutions of palladium(II)-calcein and palladium(II)-calcein blue are shown to be sensitive spray reagents for the detection and in situ determination of organothiophosphorus insecticides on thin-layer chromatograms.
T F, Bidleman, B, Nowlan, R W, Frei
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Abstract Fluorescence-quenched solutions of palladium(II)-calcein and palladium(II)-calcein blue are shown to be sensitive spray reagents for the detection and in situ determination of organothiophosphorus insecticides on thin-layer chromatograms.
T F, Bidleman, B, Nowlan, R W, Frei
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Journal of the Chemical Society, Chemical Communications, 1980
A method for the determination of organolithium reagent is described using 2,5-dimethoxybenzyl alcohol as a self-indicating primary standard.
Mark R. Winkle +2 more
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A method for the determination of organolithium reagent is described using 2,5-dimethoxybenzyl alcohol as a self-indicating primary standard.
Mark R. Winkle +2 more
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Rapid Test Determination of Iron(II) in Aqueous Media by Reagent Indicator Paper
Journal of Analytical Chemistry, 2004A reagent indicator paper with immobilized zirconyl hexacyanoferrate(III) is prepared for the preconcentration and determination of 0.05–500 mg/L of iron(II) in the presence of more than 100-fold amount of iron(III). The paper is stable in the presence of up to 200 mg/L of 1,1-dimethylhydrazine.
V. M. Ostrovskaya +3 more
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Rapid determination of copper(I, II) ions using reagent indicator paper
Journal of Analytical Chemistry, 2009A rapid, sensitive, and highly selective test based on the reaction of copper(I) with thio-Michler’s ketone was developed for the detection and semiquantitative determination of 0.001–2 mg/L copper in natural and potable waters using preconcentration in a portable indicator device.
O. V. Gaiduk +3 more
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Photochemistry and Photobiology, 2006
ABSTRACTDirect detection of reactive oxygen species (ROS), especially singlet oxygen, in plants under stress conditions is of special importance, not only to identify primary events of oxidative damage, but also in studies exploring the potential role of ROS as signal molecules.
Eva, Hideg +4 more
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ABSTRACTDirect detection of reactive oxygen species (ROS), especially singlet oxygen, in plants under stress conditions is of special importance, not only to identify primary events of oxidative damage, but also in studies exploring the potential role of ROS as signal molecules.
Eva, Hideg +4 more
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