Vortex-assisted liquid-liquid microextraction for the rapid screening of short-chain chlorinated paraffins in water

Chia Yu Chang, Wu Hsun Chung, Wang Hsien Ding

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

The rapid screening of trace levels of short-chain chlorinated paraffins in various aqueous samples was performed by a simple and reliable procedure based on vortex-assisted liquid-liquid microextraction combined with gas chromatography and electron capture negative ionization mass spectrometry. The optimal vortex-assisted liquid-liquid microextraction conditions for 20 mL water sample were as follows: extractant 400 μL of dichloromethane; vortex extraction time of 1 min at 2500 × g; centrifugation of 3 min at 5000 × g; and no ionic strength adjustment. Under the optimum conditions, the limit of quantitation was 0.05 μg/L. Precision, as indicated by relative standard deviations, was less than 9% for both intra- and inter-day analysis. Accuracy, expressed as the mean extraction recovery, was above 91%. The vortex-assisted liquid-liquid microextraction with gas chromatography and electron capture negative ionization mass spectrometry method was successfully applied to quantitatively extract short-chain chlorinated paraffins from samples of river water and the effluent of a wastewater treatment plant, and the concentrations ranged from 0.8 to 1.6 μg/L.

Original languageEnglish
Pages (from-to)427-432
Number of pages6
JournalJournal of Separation Science
Volume39
Issue number2
DOIs
StatePublished - 1 Jan 2016

Keywords

  • Chlorinated paraffins
  • Gas chromatography with mass spectrometry
  • Liquid-liquid microextraction
  • Water analysis

Fingerprint

Dive into the research topics of 'Vortex-assisted liquid-liquid microextraction for the rapid screening of short-chain chlorinated paraffins in water'. Together they form a unique fingerprint.

Cite this