UNIGE document Scientific Article
previous document  unige:82109  next document
add to browser collection
Title

Supercritical fluid extraction of triazine herbicides: A powerful selective analytical method

Authors
Published in Chromatographia. 1995, vol. 40, no. 11-12, p. 705-711
Abstract Atrazine and three of its metabolites (Deset [desethylatrazine], Met [desethyl-desisopropyl-2-hydroxyatrazine], 2-Hydroxy [2-hydroxyatrazine]) were extracted from three different environmental matrices: soils, sediments and plants. Standard extraction remained constant to allow intercomparison. The recovery of the target analytes varied significantly from one matrix to one another. An extraction performed with modified supercritical CO2 is compared to a classical solid-liquid extraction [SLE] with methanol: water (4∶1). SFE does not require the clean-up of the extract that classical methods usually do for any of the sample types. The method enables analysis of all target analytes. Although recoveries are generally good, lower recoveries are obtained for natural samples. Classical extraction gave better recoveries, but does not enable characterisation of metabolites, indeed, several clean-ups are needed to remove interfering coextraction products. Although SFE may give lower recoveries than traditional extraction method for atrazine, it is an accurate analytical method that allows quantification of polar pesticides with high reproducibility and specificity, avoiding coextraction of important quantities of the sample matrix.
Keywords Supercritical fluid extraction [SFE]Solid-liquid extraction [SLE]Triazine herbicides and metabolitesEnvironmental matrices
Identifiers
Full text
Article (Published version) (545 Kb) - document accessible for UNIGE members only Limited access to UNIGE
Other version: http://link.springer.com/10.1007/BF02315141
Structures
Citation
(ISO format)
PAPILLOUD, Stéphane, HAERDI, Werner. Supercritical fluid extraction of triazine herbicides: A powerful selective analytical method. In: Chromatographia, 1995, vol. 40, n° 11-12, p. 705-711. https://archive-ouverte.unige.ch/unige:82109

152 hits

1 download

Update

Deposited on : 2016-03-24

Export document
Format :
Citation style :