Abstract
A porous polypropylene hollow fiber membrane (HFM)-protected solid-phase microextraction (HFM-SPME) procedure in conjunction with gas chromatography/mass spectrometric analysis for use in the determination of triazine herbicides in bovine milk samples is described. A 65-μm polydimethylsiloxane-divinylbenzne (PDMS-DVB) SPME fiber was protected by an HFM. HFM-SPME experimental parameters such as fiber type, extraction time, extraction temperature and salt concentration were investigated and optimized. The relative standard deviations for the reproducibility of the optimized HFM-SPME method varied from 4.30 to 12.37%. The correlation coefficients of the calibration curves were between 0.9799 and 0.9965 across a concentration range of 0-200 μg l -1. The method detection limits for triazines in bovine milk were in the range of 0.003-0.013 μg l -1 and limits of quantification were in the range of 0.006-0.021 μg l -1. The suitability of HFM-SPME was extended to the analysis of the herbicides in sewage sludge samples. The results demonstrate that HFM-SPME was an efficient pretreatment and enrichment procedure for complex matrices.
| Original language | English |
|---|---|
| Pages (from-to) | 189-194 |
| Number of pages | 6 |
| Journal | Journal of Chromatography A |
| Volume | 1047 |
| Issue number | 2 |
| DOIs | |
| State | Published - 27 Aug 2004 |
| Externally published | Yes |
Bibliographical note
Funding Information:The authors gratefully acknowledge the financial support of this research by the National University of Singapore and the United Nations University, Japan.
Keywords
- Milk
- Pesticides
- Solid-phase microextraction
- Triazines
ASJC Scopus subject areas
- Analytical Chemistry
- Biochemistry
- Organic Chemistry
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