Universiti Teknologi Malaysia Institutional Repository

Optimization of CE separation of roxarsone and several arsenic compounds

Jaafar, Jafariah and Ahamad, Rahmalan and Nasrullah, Nasrullah and Irwan, Zildawarni (2006) Optimization of CE separation of roxarsone and several arsenic compounds. Jurnal Teknologi C (44C). pp. 77-88. ISSN 0127-9696

[img]
Preview
PDF
526Kb

Official URL: http://www.penerbit.utm.my/onlinejournal/44/C/JTJU...

Abstract

Capillary electrophoresis with direct UV detection was used for the separation of arsenite As(III), arsenate As(V), monomethylarsonic acid (MMA), dimethylarsinic acid (DMA), phenylarsonic acid (PAA), Ï?-arsanilic acid (Ï?-ASA) and roxarsone (3-NHPAA). The separation was achieved in a fused silica capillary using a high sensitivity detection cell with diode array detector. A 15 mM phosphate buffer was used as the background electrolyte. The influence of electrolyte pH, applied voltage and wavelength were investigated in this research where the optimum conditions obtained were at pH 6.0, 25 kV voltage and 191 nm detection wavelength. The optimized method provided a limit of detection of 0.193 mg/L for As(III). Reproducibility of the analytes was in the range of 4.6%-10.5% RSD

Item Type:Article
Uncontrolled Keywords:arsenic compound, roxarsone, capillary electrophoresis
Subjects:Q Science > QD Chemistry
Divisions:Science
ID Code:5460
Deposited By: Kamariah Mohamed Jong
Deposited On:28 Apr 2008 08:20
Last Modified:28 Oct 2010 05:01

Repository Staff Only: item control page