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Reference type: Journal
Authors: Hu YY, Xu HQ, Yao J, Song W, Lu YN, Li WJ, Han F, Zheng P
Article Title: Selective Detection of 20 Triazoles Residues in Food Uusing Molecularly Imprinted Solid Phase Extraction coupled with Liquid Chromatography Tandem Mass Spectrometry.
Publication date: 2014
Journal: Chinese Journal of Analytical Chemistry
Volume: 42
Issue: (2)
Page numbers: 227-232.
Alternative URL: http://210.14.121.5:8080/fxhx/EN/abstract/abstract13456.htm

Abstract: Molecularly imprinted polymers(MIPs) with high selectivity to triazoles residues were prepared using triadimefon as template, trifluoromethyl acrylic acid (TFMAA) as functional monomer and ethylene glycol dimethacrylate (EGDMA) as cross. linker. The MIPs were applied as solid phase extraction materials. The optimum loading, washing and eluting conditions for molecularly imprinted solid phase extraction (MISPE) were established to obtain high selectivity and sensitivity. Coupled with LC-MS/MS, a high throughput and selective method was developed for simultaneous determination of 20 triazole pesticides in vegetables and fruits. The spiked recovery was investigated and the matrix effects were compared between MISPE and ENVI-Carb/PSA SPE columns. The results showed that the pesticide recoveries were in the range of 81.0% - 109.7% with RSD lower than 13% at 1.0, 2.0 and 10.0 mu g/kg spiked levels, and the matrix effect was in the range of 91.1% - 121.8%. Compared with ENVI-Carb/PSA SPE columns, MISPE exhibited selective binding properties for triazoles and the matrix effect was significantly decreased
Template and target information: triadimefon, triazoles
Author keywords: Molecularly-imprinted polymers, solid phase extraction, Triazoles pesticides, Carrot, Pear


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