Determination of Iron,Cobalt and Nickel as Chelates with4-(2-Thiazolylazo)Resorcinol by Liquid Chromatography with Electrochemical Detection

Chem. J. Chinese Universities ›› 1994, Vol. 15 ›› Issue (2): 201.

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Determination of Iron,Cobalt and Nickel as Chelates with₄-(2-Thiazolylazo)Resorcinol by Liquid Chromatography with Electrochemical Detection

GE Ri-Le², LI Hui-Mei¹, LI Nan-Qiang², WANG Er-Kang¹

1. Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022;
2. Department of Chemistry, Peking University, Beijing

Received:1993-03-04 Revised:1993-06-25 Online:1994-02-24 Published:1994-02-24

Abstract

Abstract: It was determined that 4-(2-thiazolylazo)resorcinol(TAR)and the chelates of iron,cobalt and nickel with TARcan be oxided at a glassy carbon electrode.The above chelates andTARwere separated on a spherisorb ODScolumn with a mobile phase of methanol-water(55/45,V/V) containing_0. 01 mol/L Na2HPO₄-KH₂PO₄ buffer(pH_7.0) and were detected at 0.86V.The calibration graphs were rectilinear from 0.1-5 ppm,0.01-5 ppm,0.08-1 ppm for iron, cobalt and nickel, respectively.The detection limits were 0.8,0.2,0.8 ng for iron,cobalt and nickel respectively.The method has been applied to the analysis of hair samples.

Key words: Liquid chromatography, Iron, Cobalt, Nickel, 4-(2-Thiazolylazo)-resorcinol

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GE Ri-Le, LI Hui-Mei, LI Nan-Qiang, WANG Er-Kang . Determination of Iron,Cobalt and Nickel as Chelates with₄-(2-Thiazolylazo)Resorcinol by Liquid Chromatography with Electrochemical Detection[J]. Chem. J. Chinese Universities, 1994, 15(2): 201.

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Determination of Iron,Cobalt and Nickel as Chelates with₄-(2-Thiazolylazo)Resorcinol by Liquid Chromatography with Electrochemical Detection

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