Journal ArticleDOI
A molecularly imprinted polymer for the pesticide bentazone
TLDR
In this paper, the polymer obtained from equimolar amounts of methacrylic acid and 4-vinylpyridine was found to recognize bentazone better than other polymers, both in chloroform and acetonitrile.Abstract:
Polymers able to bind the pesticide bentazone were prepared by utilising the technique of the non-covalent molecular imprinting polymerisation and using different molar ratios of methacrylic acid and 4-vinylpyridine as interacting monomers. Polymers obtained were packed in HPLC columns and the imprinting effect was studied using chloroform and acetonitrile as mobile phase. The polymer obtained from equimolar amounts of methacrylic acid and 4-vinylpyridine was found to recognise bentazone better than other polymers, both in chloroform and acetonitrile. The bentazone capacity for this stationary phase was studied considering aqueous buffers with different pH values and ionic strengths. A preliminary procedure of solid phase extraction was tested on aqueous samples containing a fixed amount of bentazone. Good recoveries (91–96%) and concentration factors of 3.2–15.2 were found.read more
Citations
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Journal ArticleDOI
Molecular imprinting science and technology: a survey of the literature for the years up to and including 2003
Cameron Alexander,Håkan S. Andersson,Lars I. Andersson,Richard J. Ansell,Nicole Kirsch,Ian A. Nicholls,John O’Mahony,Michael J. Whitcombe +7 more
TL;DR: In the presentation of the assembled references, a section presenting reviews and monographs covering the area is followed by papers dealing with fundamental aspects of molecular imprinting and the development of novel polymer formats.
Journal ArticleDOI
Molecular imprinting: developments and applications in the analytical chemistry field.
TL;DR: Due to the high affinities and selectivities often achievable, imprinted polymers have been considered as alternative binding entities in biosensors and in immunoassay type protocols.
Journal ArticleDOI
Molecularly imprinted polymers: new tailor-made materials for selective solid-phase extraction
TL;DR: In this article, the authors described the applications described in this article include the molecularly imprinted solid phase extraction (MISPE) of several kinds of analytes of biological, pharmaceutical and environmental interest.
Journal ArticleDOI
Ni(II) ion-imprinted solid-phase extraction and preconcentration in aqueous solutions by packed-bed columns
TL;DR: In this paper, a polymer obtained by imprinting with Ni(II) ion as a ion-imprinted solid phase extraction (SPE) sorbent was synthesized and polymerized with cross-linking ethyleneglycoldimethacrylate to obtain [poly(EGDMA-MAH/Ni(II))].
Journal ArticleDOI
Synthesis and evaluation of a molecularly imprinted polymer for selective on-line solid-phase extraction of 4-nitrophenol from environmental water.
TL;DR: It has been shown that the conditions chosen for washing the MIP and for eluting the analyte in the MISPE process are extremely important for ensuring good selectivity and recovery.
References
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Journal ArticleDOI
Molecularly Imprinted Solid Phase Extraction of Atrazine from Beef Liver Extracts
Mark T. Muldoon,Larry H. Stanker +1 more
TL;DR: The use of molecularly imprinted solid phase extraction (MISPE) improved the accuracy and precision of the HPLC method and lowered the limit of detection (0.005 ppm), and allowed for the rapid analysis of complex biological matrices using either method at the tolerance level of 0.02 ppm in meat products.
Journal ArticleDOI
A Highly Selective Solid Phase Extraction Sorbent for Pre- Concentration of Sameridine Made by Molecular Imprinting
TL;DR: In this paper, a novel approach to solid phase extraction, based on the use of a highly selective molecularly imprinted polymer, is presented, which leads to distinctly cleaner chromatographic traces and ability to improve sensitivity by extracting sameridine from larger sample volumes.
Journal ArticleDOI
Analysis of nicotine and its oxidation products in nicotine chewing gum by a molecularly imprinted solid-phase extraction
TL;DR: Three out of four analytes were quantitatively recovered using the imprinted phase, whereas, using the nonimprinted phase, only nicotine was recovered, and without the cleanup step, none of the analytes could be determined using the reversed-phase HPLC method.
Journal ArticleDOI
Determination of Theophylline in Serum by Molecularly Imprinted Solid-Phase Extraction with Pulsed Elution
TL;DR: Application of MISPE-PE in serum analysis further demonstrates the high capability of the MIP column to selectively isolate theophylline from other matrix components for fast, accurate determination.
Journal ArticleDOI
Solid-phase Extraction of a Triazine Herbicide Using a Molecularly Imprinted Synthetic Receptor
TL;DR: In this paper, a molecularly imprinted synthetic polymer receptor selective for simazine herbicides was prepared by suspension polymerization, and was applied to the specific solid phase extraction of simazine, one of the most commonly used herbicides, from water.
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Molecularly Imprinted Solid Phase Extraction of Atrazine from Beef Liver Extracts
Mark T. Muldoon,Larry H. Stanker +1 more