MIPs logo MIPdatabase      Use this space
Custom Search
Reference type: Journal
Authors: Huang CN, Duan XJ, Ma HP, Yu YH, Chen LG
Article Title: Determination of Methomyl in Vegetables by Magnetic Molecularly Imprinted Polymer Extraction/High Performance Liquid Chromatography.
Publication date: 2013
Journal: Journal of Instrumental Analysis
Volume: 32
Issue: (3)
Page numbers: 275-280.
Alternative URL: http://fxcsxb.com/ch/reader/view_abstract.aspx?file_no=20130302&flag=1

Abstract: A rapid and selective method was successfully developed using magnetic molecularly imprinted polymer(MMIP) as sorbent for the extraction of methomyl from vegetable samples.The MMIP was synthesized using methomyl as template molecule,methacrylic acid as functional monomer,ethylene glycol dimethacrylate as crosslinking agent and Fe3O4 magnetite as magnetic component.The MMIP was characterized by Fourier transform infrared spectra,scanning electron microscope and physical property measurement system.Scatchard plot analysis revealed that two kinds of different binding sites existed in MMIP,in which the maximum amount of apparent binding and dissociation constant of binding sites were as follows:Qmax1=0.053 04 mmol/g,Kd1=0.314 35 mmol/L;Qmax2=0.130 51 mmol/g,Kd2=1.921 22 mmol/L.The kinetic property of MMIP was well fitted to the pseudo-second-order equation.The result indicated that MMIP had high selectivity towards methomyl over reference compound.The effects of extraction solvent,MMIP amount,extraction time,shaking rate,desorption solvent on recoveries of methomyl were investigated.Under the optimal conditions,the limit of detection of methomyl was 0.012 mg/kg,the spiked recoveries of methomyl were in the range of 86%-94% with relative standard deviations(RSDs) of 2.2%-6.1%.The method was applied in the determination of methomyl in vegetable samples,including cabbage,pakchoi,tomato,cucumber and pepper,in which,methomyl was detected in the tomato sample with concentration of 1.135 mg/kg.Compared with the traditional method,the proposed method is rapid and effective,and is promising for the analysis of pesticide residues in food samples.
Template and target information: methomyl
Author keywords: Magnetic molecularly imprinted polymer, methomyl, Vegetable, high performance liquid chromatography

  I love MIPs shirt  multi MIPs logo mug  Irish periodic table patriotic shirt

Molecules Special Issue call      Appeal for information


Join the Society for Molecular Imprinting
Logo of the Society for Molecular Imprinting

New items RSS feed
new items RSS feed  View latest updates

Sign-up for e-mail updates:
Choose between receiving an occasional newsletter or more frequent e-mail alerts.
Click here to go to the sign-up page.

Is your name elemental or peptidic? Enter your name and find out by clicking either of the buttons below!
Other products you may like:
view listings for MIP books on eBay:

Mickey Mouse 90th Anniversary banner