Simultaneous Spectrophotometric Determination of Chromium(VI) and Vanadium(V) by using 3,4-Dihydroxybenzaldehyde isonicotinoyl hydrazone  (3,4-DHBINH)

Narayana, Lakshmi; Suvarapu, undefined; Somala, Adinarayana Reddy; Bobbala, Prathima; Inseong, Hwang; Ammireddy, Varada Reddy

doi:https://doi.org/10.1155/2009/718738

Journal of Chemistry

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Volume 6 | Article ID 718738 | https://doi.org/10.1155/2009/718738

Simultaneous Spectrophotometric Determination of Chromium(VI) and Vanadium(V) by using 3,4-Dihydroxybenzaldehyde isonicotinoyl hydrazone (3,4-DHBINH)

Lakshmi Narayana,² Suvarapu,¹Adinarayana Reddy Somala,²Prathima Bobbala,²Hwang Inseong,¹and Varada Reddy Ammireddy²

Received05 Jun 2009

Accepted03 Aug 2009

Abstract

A simple, rapid, highly sensitive and new simultaneous spectro- photometric method is proposed for the analysis of chromium(VI) and vanadium(V) without separation by using 3,4-dihydroxybeznaldehyde isonicotinoyl hydrazone (3,4-DHBINH). The reagent reacts with the two metal ions in acetic acid-sodium acetate buffer of pH 5.5 and gives maximum absorbances at 400 nm and 360 nm for chromium(VI) and vanadium(V), respectively. Both the metal ions gives 1: 1 (M:L) complexes with the reagent. Effect of various diverse ions also studied. The instability constants for the two complexes were also evaluated. This method was successfully applied for the determination of chromium(VI) and vanadium(V) in various spiked samples. The validity of the method was checked by comparing with the results obtained by atomic absorption spectrophotometry.

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Copyright © 2009 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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