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

Author : Ratnamala P. Sonawane and Atul Kumar Singh

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 Beerís law over a range from 1 to 10 ppm. The Molar absorptivity and Sandellís sensitivity calculated were 0.2602 ◊ 104 LMol-1cm-1 and 0.1507 Ķg cm-2 respectively. The proposed method is very sensitive and selective. The method has been successfully applied to synthetic and commercial samples.

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