نتایج جستجو برای: 1 2 pyridylazo 2 naphthol

تعداد نتایج: 3934082  

Journal: :journal of physical and theoretical chemistry 0
mohamad reza froudi jahromi chemistry department, dashtestan branch, islamic azad university, dashtestan, iran samira zandifar chemistry department, dashtestan branch, islamic azad university, dashtestan, iran ehsan pakdaman chemistry department, islamic azad university, kangan branch, kangan, iran fatemeh tavakoli chemistry department, islamic azad university, kangan branch, kangan, iran saideh bagheri young researchers and elite club, shiraz branch, islamic azad university, shiraz, iran

a new kinetic spectrophotometic method for the determination of trace amount chromium (iii) in teareal samples has been described based on it s the catalytic effect on the oxidations of 1 - ( 2 –pyridylazo ) - 2 - naphthol, (pan), by potassium bromated in sulfuric acid. the reaction is followedspec- trophotometrically by measuring the decrease in the absorbance at 469 nm. under the optimumcondi...

Ehsan Pakdaman Fatemeh Tavakoli Mohamad Reza Froudi Jahromi, Saideh Bagheri Samira Zandifar

A new kinetic spectrophotometic method for the determination of trace amount Chromium (III) in Teareal samples has been described based on it s the catalytic effect on the oxidations of 1 - ( 2 –PyridylAzo ) - 2 - Naphthol, (PAN), by potassium bromated in sulfuric acid. The reaction is followedspec- trophotometrically by measuring the decrease in the absorbance at 469 nm. Under the optimumcondi...

Journal: :Talanta 1987
Y S Nikitin N B Morozova S N Lanin T A Bol'shova V M Ivanov E M Basova

1-(2-Pyridylazo)-2-naphthol has been used for extraction concentration of palladium, copper, cobalt and nickel from aqueous solutions and subsequent separation of the chelates obtained, by means of high-pressure liquid chromatography. A technique for determining microamounts of palladium in aqueous solutions in the presence of 100-fold ratio of copper and 80-fold ratio of cobalt has been develo...

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