نتایج جستجو برای: murexide

تعداد نتایج: 60  

2009
Hossnia S. Mohran

Knowledge of solvent effects on the redox properties of Murexide (Mu) is important for understanding its role as an electron acceptor in analytical and inorganic chemistry. In the present study, an investigation of the electrochemical behavior of the compound by both Cyclic Voltammetry (CV) and Electrochemical Impedance Spectroscopy (EIS) in both aqueous and non-aqueous solutions was undertaken...

Journal: :Analytica chimica acta 2007
Alexandre Fonseca Ivo M Raimundo

This work describes the use of a multi-LED photometer for discrimination of mineral water samples, employing chromogenic reagents and chemometric techniques. Forty-five water samples (including 7 different brands of mineral water and samples of deionised, distilled and tap waters) were analysed in a monosegmented flow system, using three different chromogenic reagents (murexide, PAR and eriochr...

Journal: :Talanta 2004
H Abdollahi S Zeinali

The use of H-point curve isolation (HPCIM) and H-point standard addition methods (HPSAM) for spectrophotometric studies of complex formation equilibria are proposed. One step complex formation, two successive stepwise and mononuclear complex formation systems, and competitive complexation systems are studied successfully by the proposed methods. HPCIM is used for extracting the spectrum of comp...

Journal: :Chemical and Pharmaceutical Bulletin 1982

Journal: :Journal of clinical pathology 1957
R H WILKINSON

A simple, rapid, accurate method for determining calcium and magnesium separately in 0.1 ml. volumes of serum (or heparinized plasma) was required for the routine chemical pathology service of a children's hospital (Wilkinson, 1955-6). The apparatus used had to be generally available, the minimum of pipetting and transfer was desirable for the sake of accuracy, and the method had to be specific...

Journal: :World Journal of Organic Chemistry 2019

Journal: :RGSA: Revista de Gestão Social e Ambiental 2022

Purpose: Preparation of Nano cellulose from cotton lint and pear peels instead throwing it as waste cause damage to environment Comparison between the efficiency product prepared NC through characterization both type by using technique Field emission scanning electron microscopy (FESEM) . finally Applying Murexide dye aqueous solution surface types extracted for industrial
 Methodology: Ag...

2005
M. S. Masoud T. S. Kassem M. A. Shaker A. E. Ali

Murexide, a reddish purple compound has the structure shown in Fig. 1. It has received much interest because of its application in chemical analysis and spectrophotometric fields [1, 2]. It is considered as the ammonium salt of purpuric acid and named as ammonium 2,6-dioxo-5-(2,4,6-trioxo-tetrahydro-pyrimidine-5-ylidene amino)-1,2,3,6-tetrahydro-pyrimidine-4-olate. It serves as a metal ion indi...

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