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Supercritical fluid extraction of triazine herbicides from solid matrices

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Published in Chromatographia. 1994, vol. 38, no. 7-8, p. 514-519
Abstract Several investigations were performed to optimise the extraction of polar triazine herbicides using supercritical fluid extraction from two different solid matrices: C18-silica and soil samples. Supercritical CO2 modified with methanol [10% (V∶V)] at 250 bars and 50°C was required to quantitatively extract Atrazine and 2-Hydroxyatrazine from spiked C18-silica. Extraction of Desisopropyl-desethyl-2-hydroxyatrazine (MET) attained only 52%, even following addition of water to the polar modifier. Extractions of spiked soil samples (20 ppm of each pesticide) were successful at 300 bars and 65°C. A non polar wash improved the recoveries of the three target analytes [i.e. atrazine: 88%; 2-hydroxyatrazine: 96%; MET: 41%]. The extraction parameters employed are discussed in this paper.
Keywords Supercritical fluid extractionTriazine herbicidesExtraction of atrazine and metabolitesSolid matrices
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Other version: http://link.springer.com/10.1007/BF02269845
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PAPILLOUD, Stéphane, HAERDI, Werner. Supercritical fluid extraction of triazine herbicides from solid matrices. In: Chromatographia, 1994, vol. 38, n° 7-8, p. 514-519. https://archive-ouverte.unige.ch/unige:82081

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Deposited on : 2016-03-23

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