A Novel Application of Natural Peat for Solid-Phase Extraction of Pyrimethanil, Flumetralin, and Kresoxim-Methyl in Water Using Gas Chromatography-Mass Spectrometry. (14th June 2012)

• Record Type: Journal Article
• Authors: Santos, Alex S. M. S. J.; Aquino, Adriano; Romão, Luciane P. C.; Navickiene, Sandro
• Other Names: Namera A. Academic Editor.; Vazquez A. Academic Editor.
• Is Part Of: ISRN chromatography. Volume 2012(2012)
• Publication Date: 2012-06-14
• Subjects: Chromatographic analysis -- Periodicals; Chromatographic analysis; Electronic journals; Periodicals; Electronic journals; 543.8
• DOI: 10.5402/2012/693249
• Languages: English
• ISSNs: 2090-8636

Abstract

Abstract : Natural peat was tested for extraction of pyrimethanil, flumetralin, and krexosim-methyl from water, with analysis using gas chromatography-mass spectrometry (GC-MS) in selected ion monitoring mode (SIM). Experiments were carried out at one fortification level (0.1 μ g L −1 ) and resulted in recoveries in the range 41–96%, with RSD values between 6.8 and 12.6% for natural peat as sorbent. Detection and quantification limits ranged from 0.02 to 0.05 μ g L −1 and from 0.07 to 0.1 μ g L −1, respectively, for the different pesticides studied. The method developed was linear over the range tested (0.07–4.0 μ g L −1 ), with correlation coefficients ranging from 0.9919 to 0.9989. Comparison between peat and commercial sorbents (C18 -bonded silica, ENVI-Carb, Florisil, silica gel, ENVI-Carb/LC-NH2 ) showed better performance of peat sorbent for flumetralin and kresoxim-methyl.