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COMPARISON OF REVERSED-POLARITY CAPILLARY ELECTROPHORESIS AND ADSORPTIVE STRIPPING VOLTAMMETRY FOR THE DETECTION AND DETERMINATION OF REACTIVE TEXTILE DYES

Biomedical Sciences Research Institute Computer Science Research Institute Environmental Sciences Research Institute Nanotechnology & Advanced Materials Research Institute

Oxspring, DA, Smyth, Franklin and Marchant, Roger (1995) COMPARISON OF REVERSED-POLARITY CAPILLARY ELECTROPHORESIS AND ADSORPTIVE STRIPPING VOLTAMMETRY FOR THE DETECTION AND DETERMINATION OF REACTIVE TEXTILE DYES. ANALYST, 120 (7). pp. 1995-2000. [Journal article]

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Abstract

Reversed-polarity capillary electrophoresis (CE) and adsorptive stripping voltammetry (AdSV) using a hanging mercury drop electrode are compared for the separation and determination of six reactive textile dyes, Only four of the six starting dyes could be separated in the reversed-polarity mode of CE. No change in pH, temperature, run buffer, acetonitrile concentration or surfactant brought about separation of all six dyes. Optimum separation of the hydrolysed dyes was achieved using an electrolyte of 0.05 mol dm(-3) citric acid (pH 3.25) with 10% acetonitrile. Stacking of the dyes was performed using a 0.05 mol dm(-3) citric acid buffer (pH 2.23), containing 0.006 mol dm(-3) diethylenetriamine. Electrokinetic injections were investigated using 0.05 mol dm(-3) citric acid (pH 2.23) buffer with an injection time of 30 s at a voltage of 10 kV. AdSV studies were carried out using a 0.2 mol dm(-3) acetate-acetic acid buffer (pH 4.5) and a 5 min accumulation time at the mercury electrode. The correlation coefficients of the calibration graphs and limits of detection for both techniques are also compared.

Item Type:Journal article
Faculties and Schools:Faculty of Life and Health Sciences
Faculty of Life and Health Sciences > School of Biomedical Sciences
Research Institutes and Groups:Biomedical Sciences Research Institute
Biomedical Sciences Research Institute > Pharmaceutical Science and Practice
ID Code:6258
Deposited By:Prof W.Franklin Smyth
Deposited On:11 Jan 2010 11:36
Last Modified:27 Jun 2011 13:35

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