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Liquid-gas-liquid microextraction as a simple technique for the extraction of 2,4-di-tert-butyl phenol from aqueous samples

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Author

Summary, in English

A solvent-free microextraction technique based on liquid-gas-liquid microextraction was investigated for the extraction and preconcentration of 2,4-di-tert-butyl phenol from aqueous samples. In this study 16 mu L NaOH 1 M as acceptor phase was introduced in the lumen of a polypropylene hollow fiber, with one of its ends heat-sealed. A small piece (about 2 cm) of metallic wire was used to seal the other end of hollow fiber after introducing acceptor phase and before immersing of hollow fiber into the analyte solution. This configuration eliminated the need for a holder. The extraction procedure is simple and there is no necessity to adjust pH, salt content, temperature, etc. After extraction the acceptor phase was transferred to a 1-mL vial, 50 mu L. 0.5 M phosphoric acid was added and the sample was injected into the HPLC-DAD system. Detection was performed at 280 nm. Limit of detection is 30 ng mL(-1) and the relative standard derivation (n = 6) is 5.0%. An enrichment factor (EF) of about 30 is achievable.

Publishing year

2007

Language

English

Pages

415-419

Publication/Series

Chromatographia

Volume

66

Issue

5-6

Document type

Journal article

Publisher

Vieweg Verlag

Topic

  • Analytical Chemistry

Keywords

  • 2
  • column liquid chromatography
  • liquid-gas-liquid microextraction
  • 4-di-tert-butyl phenol
  • HPLC-DAD
  • hollow fiber

Status

Published

ISBN/ISSN/Other

  • ISSN: 0009-5893