Solid-Phase Spectrophotometric Determination of Cobalt(II) in Tap Water and Beverages Using 2-(5-Bromo-2-Pyridylazo)-5-(N-Propyl-N-(3-Sulfopropyl)amino)phenol After Preconcentration as the 1-(2-Pyridylazo)-2-Naphthol Complex.
Analytical Sciences - Japan
doi 10.2116/analsci.14.337
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January 1, 1998
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Japan Society for Analytical Chemistry