Recognition and fast separation of Paclobutrazol pesticides via molecular imprinted silica nanoparticles

Year 2017, Volume: 30 Issue: 3, 267 - 272, 20.09.2017

Eylem Turan

Abstract

In
this study, molecularly imprinted silica nanoparticles was prepared with
surface imprinting method for specific recognition with high affinity and
separation of paclobutrazol in honey samples. To prepare molecularly imprinted
silica nanoparticles, Paclobutrazol was used as template molecule,
2-hydroxyethyl methacrylate as monomer, 1,2-ethyleneglycoldimethacrylate as
crooslinking agent. Furthermore, MIP SNPs were synthesized by single electron
transfer living radical polymerization. The prepared nanoparticles can be
easily separated and collected by ultrasantrifuge with 140000 rpm and exhibited
highly selectivity to template molecules. All rebinding studies showed that the
MIP SNPs had excellent recognition towards Paclobutrazol. The recoveries of PB in the spiking honey samples changed from 98.7%
to 99.9% with the relative deviation from 8.62% to 4.92% According to all results, MIP SNPs can be good alternative for selective recognition and efficient
separation of pesticides in real samples.

Keywords

: single electron transfer living radical polymerization, Paclobutrazol, pesticides, molecularly imprinted

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