XXXX nanotubes@ @entity3440 nanohybrids coating for solid-phase microextraction of @entity5139 pesticides followed by gas chromatography-corona discharge ion mobility spectrometric detection.

@entity3758 @entity16549 @entity3440 @entity505 @entity5139 @entity413
UNASSIGNED: A high efficiency solid-phase microextraction (SPME) fiber coated with porous @entity505 nanotubes- @entity3440 (CNTs- @entity3758 ) nanohybrids was synthesized and applied for the determination of some @entity5139 pesticides (OPPs) in vegetables, fruits and water samples. Gas chromatography-corona discharge ion mobility spectrometry was used as the detection system. @entity413 , as a biocompatible compound, was used for connecting CNT and @entity3758 during a hydrothermal process. The electrospinning technique was also applied for the fiber preparation. The parameters affecting the efficiency of extraction, including stirring rate, salt effect, extraction temperature, extraction time, desorption temperature and desorption time, were investigated and optimized. The developed CNTs@ @entity3758 fiber presented better extraction efficiency than the commercial SPME fibers (PA, @entity16549 , and @entity16549 -DVB). The intra- and inter-day relative standard deviations were found to be lower than 6.2 and 9.0%, respectively. For water samples, the limits of detection were in the range of 0.005-0.020 gL(-1) and the limits of quantification were between 0.010 and 0.050 gL(-1). The results showed a good linearity in the range of 0.01-3.0 gL(-1) for the analytes. The spiking recoveries ranged from 79 (  9) to 99 (  8). The method was successfully applied for the determination of OPPs in real samples.
