Development of method for extractive spectrophotometric determination of Fe (II) with of 2-[2-(4-chloro benzothiozole) imino]-5- nitro phenol as an analytical reagent

Abstract

A spectrophotometric method has been developed for the determination of Cu (II) using    2-[2-(4-Chloro Benzothiozole) imino]-5- nitro phenol as an extractive reagent. The reagent forms a coloured complex, which has been quantitatively extracted into n- butanol at PH 8.6. The method obeys Beer’s law over a range from 1 to 10 ppm. The Molar absorptivity and Sandell’s sensitivity calculated were 0.2602 × 104 LMol-1cm-1 and 0.1507 µg cm-2 respectively. The proposed method is very sensitive and selective. The method has been successfully applied to synthetic and commercial samples.