Authors : R. M. Jugade
Page Nos : 522-528
Description :
Differential pulse adsorptive stripping voltammetric method has been for the
trace determination of nickel and cobalt using 1-nitroso-2-naphthol as a complexing
agent. Various parameters have been optimized in order to get high sensitivity,
selectivity and reproducibility. Under optimum conditions of concentration of
supporting electrolyte, pH, accumulation potential, accumulation period, drop time,
pulse amplitude and scan rate, the detection limit of 3.4 x 10-9 mol L-1 (0.2 ppb) has
been achieved. The developed method has been applied to the determination of nickel
and cobalt in fish samples collected from local markets of Nagpur and Mumbai, two
cities in India.
