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Simultaneous determination of inorganic ions in post-blast residues using capillary electrophoresis

Ahmad, Umi Kalthom and Jamari, Nor Laili Azua and Nagayah, Sivabalan (2012) Simultaneous determination of inorganic ions in post-blast residues using capillary electrophoresis. Malaysian Journal of Forensic Science, 3 (1). pp. 16-25. ISSN 2180-1126

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Official URL: http://www.forensics.org.my/pdf/fssmVol.3No.1/Arti...

Abstract

Capillary electrophoresis method for simultaneous determination of inorganic anions and cations was developed using 2,6-pyridinedicarboxylic acid (PDC) as a background electrolyte (BGE) with indirect UV detection. In order to detect both anions and cations simultaneously, the electromagnetic flow was reversed by the addition of cetryltrimethylammonium hydroxide (CTAH). The parameters which influenced the separation of inorganic ions such as electrolyte pH, concentration of PDC, applied voltage and temperature were investigated. Four anions (Cl-, NO3-, SO42-, SCN-) and three cations (Ca2+, Fe2+, Fe3+) were successfully determined simultaneously in less than 7 min under the optimized conditions (25mM PDC, 0.5mM CTAH, pH 4.7). The method was applied to the analysis of post-blast explosive residues of black powder and ammonium nitrate-fuel oil (ANFO). The analytical performances of the method are discussed in terms of analysis time, repeatability, reproducibility, linearity of response and detection limits.

Item Type:Article
Uncontrolled Keywords:Anions, cations, post-blast residue, capillary electrophoresis
Subjects:Q Science
Divisions:Science
ID Code:33065
Deposited By: Fazli Masari
Deposited On:18 Jun 2014 12:41
Last Modified:31 Jan 2019 19:30

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