MIPs logo MIPdatabase      MIP2020 Conference logo Use this space
Custom Search
Reference type: Journal
Authors: Zhou MC, Hu NN, Shu SH, Wang M
Article Title: Molecularly Imprinted Nanomicrospheres as Matrix Solid-Phase Dispersant Combined with Gas Chromatography for Determination of Four Phosphorothioate Pesticides in Carrot and Yacon.
Publication date: 2015
Journal: Journal of Analytical Methods in Chemistry
Volume: 2015
Page numbers: ArticleID385167.
DOI: 10.1155/2015/385167
Alternative URL: http://www.hindawi.com/journals/jamc/2015/385167/

Abstract: An efficient, rapid, and selective method for sample pretreatment, namely, molecularly imprinted matrix solid-phase dispersion (MI-MSPD) coupled with gas chromatography (GC), was developed for the rapid isolation of four phosphorothioate organophosphorus pesticides (tolclofos-methyl, phoxim, chlorpyrifos, and parathion-methyl) from carrot and yacon samples. New molecularly imprinted polymer nanomicrospheres were synthesized by using typical structural analogue tolclofos-methyl as a dummy template via surface grafting polymerization on nanosilica. Then, these four pesticides in carrot and yacon were extracted and adsorbed using the imprinted nanomicrospheres and further determined by gas chromatography. Under the optimized conditions, a good linearity of four pesticides was obtained in a range of 0.0517.0 ng g-1 with R varying from 0.9971 to 0.9996, and the detection limit of the method was 0.012~0.026 ng g-1 in carrot and yacon samples. The recovery rates at two spiked levels were in the range of 85.4105.6% with RSD =9.6%. The presented MI-MSPD method combined the advantages of MSPD for allowing the extraction, dispersion, and homogenization in two steps and the advantages of MIPs for high affinity and selectivity towards four phosphorothioate pesticides, which could be applied to the determination of pesticide residues in complicated vegetal samples.
Template and target information: phosphorothioate organophosphorus pesticides, tolclofos-methyl, phoxim, chlorpyrifos, parathion-methyl


  Periodic table Vindaloo - the chemical formula for curry shirt  Periodic table Bag bag  Meerkat somebody mention coffee mug

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