Preparation of malathion MIP-SPE and its application in environmental analysis

摘要: Malathion is an organophosphorous insecticide for controlling insects on fruits and vegetables, miscellaneous household insects, animal parasites. It important to develop highly efficient selective pre-treatment method analyzing malathion residues in environment samples from agricultural products based the molecularly imprinted polymers (MIPs). In this study, we developed a tailor-made MIP with specific recognization template. The MIPs were prepared using as template, methacrylic acid (MAA) functional monomer, ethylene glycol dimethacrylate (EGDMA) crosslinker, azodiisobutyronitrile (AIBN) initiator, acetonitrile-chloroform (1:1, v/v) porogen. molecular mechanism of MAA was evaluated by simulation, ultraviolet spectrometry (UV), 1H-nuclear magnetic resonance (1H-NMR). interacted specifically hydrogen bond ratio 2:1. exhibit high affinity, recognition specificity, adsorption performance malathion. Fourier transform infrared spectroscopy (FT-IR), scanning electron microscope (SEM), surface area porosimeter analyzer, thermogravimetric/differential thermal analyzer (TG/DTA) used characterize properties MIP. soil, tap water, cabbage cleaned up MIP-SPE, detected quantitatively GC-FPD, confirmed GC-MS/MS. limits confined 0.001 mg L−1, 0.004 0.004 mg kg−1, respectively. spiked recoveries 96.06–111.49 % (with RSD being 5.7–9.2 %), 98.13–103.83 % (RSD, 3.5–8.7 %), 84.94–93.69 % 4.7–5.8 %) samples, Thus, here can be effectively assessing multiple environmental samples. aim study provide efficient, selective, accurate at trace levels media.