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

DA Oxspring, Franklin Smyth, R Marchant

Research output: Contribution to journalArticle

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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.
LanguageEnglish
Pages1995-2000
JournalANALYST
Volume120
Issue number7
Publication statusPublished - Jul 1995

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Capillary electrophoresis
Voltammetry
Textiles
Coloring Agents
Buffers
Citric Acid
Mercury
Electrodes
Surface-Active Agents
Acetic Acid
Electrolytes
Acetates
Calibration
Electric potential

Cite this

@article{ae336515287647f8b960516a3e96d26e,
title = "COMPARISON OF REVERSED-POLARITY CAPILLARY ELECTROPHORESIS AND ADSORPTIVE STRIPPING VOLTAMMETRY FOR THE DETECTION AND DETERMINATION OF REACTIVE TEXTILE DYES",
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.",
author = "DA Oxspring and Franklin Smyth and R Marchant",
year = "1995",
month = "7",
language = "English",
volume = "120",
pages = "1995--2000",
journal = "ANALYST",
issn = "0003-2654",
publisher = "Royal Society of Chemistry",
number = "7",

}

COMPARISON OF REVERSED-POLARITY CAPILLARY ELECTROPHORESIS AND ADSORPTIVE STRIPPING VOLTAMMETRY FOR THE DETECTION AND DETERMINATION OF REACTIVE TEXTILE DYES. / Oxspring, DA; Smyth, Franklin; Marchant, R.

In: ANALYST, Vol. 120, No. 7, 07.1995, p. 1995-2000.

Research output: Contribution to journalArticle

TY - JOUR

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N2 - 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.

AB - 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.

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