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Reference type: Journal
Authors: Li XP, Wang YP, Sun Q, Xu B, Yang ZQ, Wang XH
Article Title: Molecularly Imprinted Dispersive Solid-Phase Extraction for the Determination of Triazine Herbicides in Grape Seeds by High-Performance Liquid Chromatography.
Publication date: 2016
Journal: Journal of Chromatographic Science
Volume: 54
Issue: (5)
Page numbers: 871-877.
DOI: 10.1093/chromsci/bmw018

Abstract: Molecular imprinting technique, regarded as one of the current state-of-the-art researches, was incorporated with the simple dispersive solid-phase extraction (MI-DSPE) in this work for the extraction of triazine herbicides in grape seeds. The atrazine molecularly imprinted polymers (MIPs) were successfully prepared and characterized by scanning electron microscopy and Fourier transform infrared spectroscopy. The imprinting particles were used as the adsorbent in DSPE. Thus, a simple, rapid and selective method based on MIPs coupled with DSPE was established for the simultaneous cleaning-up and quantitative extraction of four triazine herbicides in grape seeds. The experiment parameters, including type of washing solvents, washing time and type of eluting solvents, were investigated and optimized. The performance of the present method was validated by high-performance liquid chromatography. Good linear responses were obtained in concentration range of 0.010-5.0 μg g-1 with correlation coefficients (r2) higher than 0.9993. The recoveries at two spiked levels (1.0 and 2.0 μg g-1) were between 81.2 and 113.0% with relative deviations ranging from 1.2 to 10.7%. The limits of detection were ranged between 0.006 and 0.013 μg g-1, which were lower than the values required by European regulations
Template and target information: atrazine, triazine herbicides


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