A spectrophotometric determination of coppers(II)-1-nitrosa-2-naphthol complex in aqueous phase in the presence of Tween 40, nonionic surfactant is reported here. The method obeys Bear's law in the concentration range of 0.25-2.0 µg m1-1 The detection limit of copper (II) is 0.25 µg ml-'. The molar absorption, sensitivity, critical micelle concentration, andI-nitromo-24aapidhol metal ion concentration have been studied and discussed . The method has been applied to the determination of copper in industrial waste samples. The present method was compared with Flame Atomic Absorption Spectroscopy (FAAS), and no significant difference wm noted between the two methods at 95% confidence interval.
M I BHANGER ,G A SHAR ,
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