Glycine ionic liquid functionalized β-cyclodextrin polymer high-performance liquid chromatography for the separation/analysis of pyrethroids

The green glycine ionic liquid functionalized beta-cyclodextrin polymer material (AAIL-beta-CDCP) was synthesized and characterized with Fourier transform infrared spectroscopy (FTIR), scanning electron microscope (SEM). A novel method of solid phase extraction (SPE) coupled with high-performance liquid chromatography (HPLC) for separaton/detection of pyrethroids (permethrin and fenpropathrin) was established. Pyrethroids were rapidly adsorbed on AAIL-beta-CDCP and desorbed with methanol. Under the optimized conditions, The linear ranges of permethrin and fenpropathrin were 0.025-20.00 mu g mL(-1)and 0.03-25.00 mu g mL(-1), the limits of detection (LOD) of permethrin and fenpropathrin were 0.020 mu g mL(-1)and 0.023 mu g mL(-1), the pre-enrichment ratios of permethrin and fenpropathrin were 12.0 and 14.0 (solution volume/elution volume before extraction), respectively . AAIL-beta-CDCP could be used repeatedly for 10 times. The adsorption mechanism of permethrin and fenpropathrin on AAIL-beta-CDCP was studied with the kinetic model and the interaction of AAIL-beta-CDCP and pyrethroids. This proposed method had been successfully applied to the detection of pyrethroids in tea and tomato samples with the recovery was 92.0-100.6% and the RSD was 2.1-4.2%. [GRAPHICS] .