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Molecularly imprinted polymer for metsulfuron-methyl and its binding characteristics for sulfonylurea herbicides

Zhu, QZ; Haupt, Karsten Olaf LU ; Knopp, D and Niessner, R (2002) In Analytica Chimica Acta 468(2). p.217-227
Abstract
A molecularly imprinted polymer (MIP) was prepared using metsulfuron-methyl (MSM) as the template molecule. A combinatorial protocol has been employed to optimize the polymer in terms of the kind and relative amounts of functional and cross-linking monomers. A copolymer of 2-(trifluoromethyl)acrylic acid (TFMAA) and divinylbenzene (DVB) showed the highest binding capacity for MSM. The binding characteristics of the imprinted polymers and MSM were evaluated in various solvents using equilibrium binding experiments. The results showed that the MIP binds MSM only in dichloromethane, which was used as the porogen during polymerization. Scatchard plot analysis revealed that two classes of binding sites were formed in the imprinted polymer with... (More)
A molecularly imprinted polymer (MIP) was prepared using metsulfuron-methyl (MSM) as the template molecule. A combinatorial protocol has been employed to optimize the polymer in terms of the kind and relative amounts of functional and cross-linking monomers. A copolymer of 2-(trifluoromethyl)acrylic acid (TFMAA) and divinylbenzene (DVB) showed the highest binding capacity for MSM. The binding characteristics of the imprinted polymers and MSM were evaluated in various solvents using equilibrium binding experiments. The results showed that the MIP binds MSM only in dichloromethane, which was used as the porogen during polymerization. Scatchard plot analysis revealed that two classes of binding sites were formed in the imprinted polymer with dissociation constants of 32.3 mumol 1(-1) and 1.7 mmol 1(-1), respectively. The specificity of the imprinted polymer was investigated by binding assays using MSM and other structurally related sulforylurea herbicides. The results indicated that the imprinted polymer showed a marked selectivity for MSM. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
sulfonylurea, molecular imprinting, herbicides, metsulfuron-methyl
in
Analytica Chimica Acta
volume
468
issue
2
pages
217 - 227
publisher
Elsevier
external identifiers
  • wos:000178255200004
  • scopus:0037130903
ISSN
1873-4324
DOI
10.1016/S0003-2670(01)01437-4
language
English
LU publication?
yes
id
2d54d0e9-0312-46ed-927c-a79be4166091 (old id 328459)
date added to LUP
2007-11-15 09:16:41
date last changed
2017-12-10 04:31:40
@article{2d54d0e9-0312-46ed-927c-a79be4166091,
  abstract     = {A molecularly imprinted polymer (MIP) was prepared using metsulfuron-methyl (MSM) as the template molecule. A combinatorial protocol has been employed to optimize the polymer in terms of the kind and relative amounts of functional and cross-linking monomers. A copolymer of 2-(trifluoromethyl)acrylic acid (TFMAA) and divinylbenzene (DVB) showed the highest binding capacity for MSM. The binding characteristics of the imprinted polymers and MSM were evaluated in various solvents using equilibrium binding experiments. The results showed that the MIP binds MSM only in dichloromethane, which was used as the porogen during polymerization. Scatchard plot analysis revealed that two classes of binding sites were formed in the imprinted polymer with dissociation constants of 32.3 mumol 1(-1) and 1.7 mmol 1(-1), respectively. The specificity of the imprinted polymer was investigated by binding assays using MSM and other structurally related sulforylurea herbicides. The results indicated that the imprinted polymer showed a marked selectivity for MSM.},
  author       = {Zhu, QZ and Haupt, Karsten Olaf and Knopp, D and Niessner, R},
  issn         = {1873-4324},
  keyword      = {sulfonylurea,molecular imprinting,herbicides,metsulfuron-methyl},
  language     = {eng},
  number       = {2},
  pages        = {217--227},
  publisher    = {Elsevier},
  series       = {Analytica Chimica Acta},
  title        = {Molecularly imprinted polymer for metsulfuron-methyl and its binding characteristics for sulfonylurea herbicides},
  url          = {http://dx.doi.org/10.1016/S0003-2670(01)01437-4},
  volume       = {468},
  year         = {2002},
}