Journal article
Derivatisation/solid-phase microextraction followed by gas chromatography-mass spectrometry for the analysis of phenoxy acid herbicides in aqueous samples
Different combinations of derivatisation and solid-phase microextraction followed by gas chromatography-mass spectrometry were optimised and evaluated for the analysis of phenoxy acid herbicides in water. The most successful derivatisation approach was aqueous-phase derivatisation with benzyl bromide.
The benzyl esters were extracted most efficiently by the solid-phase microextraction fibre coated with polydimethylsiloxane-divinylbenzene. No carry-over problems were encountered with this fibre upon desorption at 250 degrees C. Detection limits in the ng/l range were obtained, while the relative standard deviations were between 14 and 42%.
Language: | English |
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Year: | 1998 |
Pages: | 211-216 |
ISSN: | 18733778 , 00219673 and 03014770 |
Types: | Journal article |
DOI: | 10.1016/S0021-9673(98)00740-7 |