Determination of chlorine species by capillary electrophoresis – mass spectrometry

A. Gáspár, Anna Pesti, Maria Szabo, Adam Kecskemeti

Research output: Contribution to journalArticle

Abstract

The applicability of CZE with mass spectrometric detection for the determination of four chlorine species, namely chloride and three stable chlorine oxyanions, was studied. The main aspects of the proper selection of BGE and sheath liquid for the CE-MS determinations of anions with high mobility were demonstrated, pointing out the importance of pH and the mobility of the anion in the BGE. The possibility of using uncoated fused silica capillary and common electrolytes for the separation was shown and the advantage of using extra pressure at the inlet capillary end was also presented. The linear range was found to be 1–100 μg/mL for ClO3 and ClO4, 5–500 μg/mL for ClO2, and 25–500 μg/mL for Cl, but the sensitivity can be greatly improved if larger sample volume is injected and electrostacking effect is utilized. The LOD for ClO3 in drinking water was 6 ng/mL, when very large sample volume was injected (10 000 mbar·s was applied).

Original languageEnglish
JournalElectrophoresis
DOIs
Publication statusPublished - Jan 1 2019

Fingerprint

Capillary electrophoresis
Chlorine
Capillary Electrophoresis
Anions
Mass spectrometry
Mass Spectrometry
Fused silica
Silicon Dioxide
Drinking Water
Electrolytes
Chlorides
Pressure
Liquids
perchlorate

Keywords

  • Capillary electrophoresis
  • Chloride
  • Chlorine oxyanions
  • Chlorine species
  • Mass spectrometry

ASJC Scopus subject areas

  • Biochemistry
  • Clinical Biochemistry

Cite this

Determination of chlorine species by capillary electrophoresis – mass spectrometry. / Gáspár, A.; Pesti, Anna; Szabo, Maria; Kecskemeti, Adam.

In: Electrophoresis, 01.01.2019.

Research output: Contribution to journalArticle

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