中文摘要：本文首次采用分子印迹聚合物纤维固相微萃取与corona放电离子迁移谱法联用对噻苯隆农药残留进行选择性检测。本文在最佳条件下，对线性关系、精密度和检测限等分析参数进行了评估，线性范围为0.01-20μg/L，线性相关系数为0.9980，检测限为0.005μg/L，日内、日间RSD分别为0.9%和2%。本文所建立的MIPF-SPME-IMS方法成功地应用于果蔬中噻苯隆农药残留检测。
外文摘要：In this study, we use corona discharge ion mobility spectrometry (CD-IMS) as a detection technique for determining thidiazuron (TDZ) after its selective microextraction using molecularly imprinted polymer (MIP) fibers. This is the first time that MIP fiber solid phase microextraction-ion mobility spectrometry (MIPF-SPME-IMS) was used to detect TDZ. The fiber was synthesized simply using a narrow bore silica capillary as a mold by the copolymerization of methacrylic acid-ethylene glycol dimethacrylate imprinted with TDZ. The prepared MIPs were characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM). The obtained flexible MIP monolithic fibers have high chemical and thermal stabilities with good selectivity to TDZ. The effective parameters influencing the polymerization were also investigated. In addition, the influences of different factors such as pH, extraction time, desorption solvent, and temperature on the extraction efficiency of the analyte were investigated. Under the optimum conditions, analytical parameters such as linearity, precision and limit of detection were also evaluated. The linear range was in the range of 0.01-20 mu g L-1 (r(2) = 0.9980) and the limit of detection was 0.005 mu g L-1. Intra- and inter-day precisions were satisfactory with a relative standard deviation (RSD) of 0.9% and 2%, respectively. Finally, the established MIPF-SPME-IMS method was successfully applied in the selective determination of TDZ residues in fruit and vegetable samples. (C) 2016 Elsevier B.V. All rights reserved.
外文关键词：Thidiazuron, Microextraction, Ion mobility, Determination, Molecularly imprinted polymer
作者：Mirzajani, R.; Ramezani, Z.; Kardani, F.
作者单位：Shahid Chamran Univ Ahvaz, Dept Chem, Fac Sci, Ahwaz, Iran.
期刊名称：MICROCHEMICAL JOURNAL
期刊影响因子：2.893
出版年份：2017
出版刊次：1
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