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Selective recognition and large enrichment of dimethoate from tea leaves by molecularly imprinted polymers

Paper ID Volume ID Publish Year Pages File Format Full-Text
4584 233 2007 9 PDF Available
Title
Selective recognition and large enrichment of dimethoate from tea leaves by molecularly imprinted polymers
Abstract

Molecularly imprinted polymers (MIPs), using dimethoate as the template molecule, were prepared for selective recognition and large enrichment of dimethoate from tea leaves. Six functional monomers were examined, which showed that MIP prepared by methyl methacrylate (MMA) had the largest imprinting factor of 7.9 for dimethoate. Molecular dynamics (MD) simulations were carried out for the six different molecular systems to investigate the recognition mechanism by predicting the interaction energies, the closest approach distances and the active site groups. The dynamic adsorption property of dimethoate on MMA-based-MIP is demonstrated to accord with the Langmuir isotherm. MIP has a marked selectivity for dimethoate compared to other structurally related organophosphorous pesticides. Molecularly imprinted solid phase extraction (MISPE) has a large selective enrichment factor of approximately 100 for dimethoate from tea leaves. It is a useful tool in the trace detection of environmental engineering.

Keywords
Molecular imprinting; Solid phase extraction; Dimethoate; Molecular dynamics simulation; Adsorption isotherm; Environmental engineering
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Selective recognition and large enrichment of dimethoate from tea leaves by molecularly imprinted polymers
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biochemical Engineering Journal - Volume 36, Issue 3, 1 October 2007, Pages 221–229
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us