Abstract
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%.
| Original language | English |
|---|---|
| Journal | Journal of Chromatography A |
| Volume | 826 |
| Pages (from-to) | 211-216 |
| ISSN | 0021-9673 |
| Publication status | Published - 1998 |