Separation and Determination for Trace of Iron(Ⅲ),Cobalt(Ⅱ),Nickel(Ⅱ),Copper(Ⅱ) and Vanadium(Ⅴ) with 4-(2-BenzothiazolyIazo) Resorcinol by Reversed-Phase High-Performance Liquid Chromatography

Abstract

Abstract: This paper reports the separation and determination of Fe(Ⅲ),Co(Ⅱ),Ni(Ⅱ),Cu (Ⅱ),and Ⅴ(Ⅴ) by reversed-phase HPLCwith 4-(2-benzothiazolylazo) resorcinol as a precol-umn derivatizing reagent.On C₈ column,the five complexes can be separated quantitatively in the mobile phase of 68/32 (Ⅴ/Ⅴ) methanol/water system (containing₂ mmol/Ltetrabutyiam-monium bromide(TBA·Br),pH 4.2 HAc-NaAc buffer solution.The detection limits are 2.5×10^-1 ng for Cu,9×10^-2 ng for V,1.3×10^-1ng for Co,1.4×10^-1 ng for Fe and 2.9×10^-1 ng for Ni,respectively,when signal-to-noise ratio is 2.The method has been used in the analysis of reagent grade hydrochloric acid,and the results are satisfactory.

Key words: Reversed-phase high-performance liquid chromatography, Vanadium, Copper, Iron, Cobalt, Nickel, 4-(2-Benzothiazolylazo) resorcinol

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ZHANG Hua-Shan, SHI Zi-Dong, CHENG Jie-Ke . Separation and Determination for Trace of Iron(Ⅲ),Cobalt(Ⅱ),Nickel(Ⅱ),Copper(Ⅱ) and Vanadium(Ⅴ) with 4-(2-BenzothiazolyIazo) Resorcinol by Reversed-Phase High-Performance Liquid Chromatography[J]. Chem. J. Chinese Universities, 1992, 13(9): 1188.

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Separation and Determination for Trace of Iron(Ⅲ),Cobalt(Ⅱ),Nickel(Ⅱ),Copper(Ⅱ) and Vanadium(Ⅴ) with 4-(2-BenzothiazolyIazo) Resorcinol by Reversed-Phase High-Performance Liquid Chromatography

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