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Chromatographia

, Volume 69, Issue 11–12, pp 1437–1441 | Cite as

Field Enhanced Sample Injection for the CE Determination of Arsenic Compounds Using Successive Multiple Ionic Polymer Layer Coated Capillaries

  • Jafariah Jaafar
  • Kanami Konishi
  • Shigeru Terabe
  • Tohru Ikegami
  • Nobuo Tanaka
Full Short Communication

Abstract

A capillary electrophoresis method using indirect UV detection has been applied to the determination of arsenate [As(V)], arsenite [As(III)], monomethylarsonic acid and dimethylarsinic acid. The arsenic species were successfully separated in a successive multiple ionic polymer layer coated capillary. On-line sample preconcentration of arsenic compounds were performed by employing field enhanced sample injection. A baseline separation was achieved in a basic background solution of 10 mM 2,6-pyridinedicarboxylic acid at pH 10.3. The precision of migration time was 1.2–2.4% RSD and peak height was 8.1–12.9% RSD. The limits of detection at a S/N ratio of 3 for the four arsenic compounds were found to be 20–70 ppb, which are comparable to other on-line preconcentration techniques. The enhancement factor was improved by 230–1,500-fold.

Keywords

Capillary electrophoresis Indirect UV detection Field enhanced stacking injection Successive multiple ionic polymer layers Arsenic compounds 

Notes

Acknowledgment

This work was supported by the JSPS-Ronpaku Fellowship VCC-10514 awarded to J. Jaafar.

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Copyright information

© Vieweg+Teubner | GWV Fachverlage GmbH 2009

Authors and Affiliations

  • Jafariah Jaafar
    • 1
  • Kanami Konishi
    • 2
  • Shigeru Terabe
    • 2
  • Tohru Ikegami
    • 3
  • Nobuo Tanaka
    • 3
  1. 1.Department of Chemistry, Faculty of ScienceUniversiti Teknologi MalaysiaUTM SkudaiMalaysia
  2. 2.Graduate School of Material ScienceUniversity of HyogoKamigoriJapan
  3. 3.Department of Biomolecular Engineering, Graduate School of Science and TechnologyKyoto Institute of TechnologySakyo-kuJapan

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