Using 1-(2-pyridylazo)-2-naphthol (PAN) to Determination of Cobalt (II) by spectrophotometric method


Abstract in English

A sensitive, simple, selective spectrophotometric method has been developed for determination Cobalt (II) with 1-(2-pyridylazo)-2 naphthol (PAN). This method ralies on the formation of stable red colored complex at pH=4.1 which has an absorption maximum at 580nm.

References used

(S. SHIBATA, (1972), 2-Pyridylazo Compounds in Analytical Chemistry, Marcel Dekker, (4
K. L. CHENG, R. H. BRAY, (1955), 1-(2-Pyridylazo)-2- naphthol as Possible Analytical Reagent, Analytica. Chimica. Acta, (27) 5, 782-785
S. SHIBATA, (1963), Spectrophotometric Determination of Rare Earth Metals with 1-(2-Pyridylazo)-2-naphthol, Analytical. Chimica. Acta, (28), 388

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