Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
18
pubmed:dateCreated
2007-7-30
pubmed:abstractText
Molecular imprinted polymers (MIPs) binding with phenoxyacetic acid (PA) as a dummy template molecule were synthesized via thermal initiation in aqueous medium. The retention behaviors of benzoic acid (BA), PA, 2-methyl-4-chlorophenoxyacetic acid (MCPA), 4-chlorophenoxyacetic acid (4-CPA), and 2,4-dichlorophenoxyacetic acid (2,4-D) on this MIP column indicate that this material can selectively retain phenoxyacetic herbicides. To investigate these recognition mechanisms, the interactions between the functional monomer 4-vinylpyridine (4-VP) and PA or 2,4-D were investigated by computational modeling. (1)H NMR spectroscopy of 2,4-D titrated by 4-VP was recorded. The chemical shift of the 2,4-D acidic proton (12.15-14.32ppm) shows the existence of the ion-pair interaction. This kind of polymers could be useful as stationary phases to extract 2,4-D, 4-CPA or MCPA and avoid leakage of a trace amount of target analyte remaining in the MIPs.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
0968-0896
pubmed:author
pubmed:issnType
Print
pubmed:day
15
pubmed:volume
15
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
6089-95
pubmed:meshHeading
pubmed-meshheading:17614288-2,4-Dichlorophenoxyacetic Acid, pubmed-meshheading:17614288-2-Methyl-4-chlorophenoxyacetic Acid, pubmed-meshheading:17614288-Acetic Acids, pubmed-meshheading:17614288-Benzoic Acid, pubmed-meshheading:17614288-Binding Sites, pubmed-meshheading:17614288-Calorimetry, pubmed-meshheading:17614288-Chromatography, High Pressure Liquid, pubmed-meshheading:17614288-Computers, Molecular, pubmed-meshheading:17614288-Herbicides, pubmed-meshheading:17614288-Magnetic Resonance Spectroscopy, pubmed-meshheading:17614288-Models, Chemical, pubmed-meshheading:17614288-Molecular Conformation, pubmed-meshheading:17614288-Molecular Mimicry, pubmed-meshheading:17614288-Polymers, pubmed-meshheading:17614288-Pyridines, pubmed-meshheading:17614288-Solvents, pubmed-meshheading:17614288-Stereoisomerism, pubmed-meshheading:17614288-Thermodynamics, pubmed-meshheading:17614288-Water
pubmed:year
2007
pubmed:articleTitle
Retention behavior of phenoxyacetic herbicides on a molecularly imprinted polymer with phenoxyacetic acid as a dummy template molecule.
pubmed:affiliation
Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100094, China.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't