Selective solid-phase extraction using molecular imprinted polymer for the analysis of diethylstilbestrol

Jiang, Xiaohui; Zhao, Chuande; Jiang, Na; Zhang, Haixia; Liu, Mancang

doi:10.1016/j.foodchem.2007.11.039

Cited by 74 publications

(31 citation statements)

References 19 publications

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“…The polymers obtained can be applied as useful materials in many fields [24][25][26][27][28]. We have previously reported some monolithic SPME fibers based on MIP, which can be coupled with gas chromatography (GC) or gas chromatography-mass spectrometry (GC-MS) for selective extraction of different compounds from various samples [29][30][31][32].…”

Section: Introductionmentioning

confidence: 99%

Inside-Needle Extraction Method Based on Molecularly Imprinted Polymer for Solid-Phase Dynamic Extraction and Preconcentration of Triazine Herbicides Followed by GC–FID Determination

et al. 2012

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An inside-needle extraction method was developed through thermal polymerization of atrazinemolecularly imprinted polymer (MIP) on the internal surface of a stainless steel hollow needle, which was oxidized and silylated. The fabricated coating (MIP layer) for the needle was durable and showed very good chemical and thermal stability. It could be mounted on a glass syringe and be directly coupled with gas chromatographic (GC) systems. The parameters being effective on the coating and extraction processes, namely nature of oxidizing agent, silylation time, nature and amount of porogen, template-to-MIP components ratio, polymerization time and temperature, sample volume, flow rate, pH and ionic strength of the sample were investigated and optimized. The extraction needle showed high selectivity as well as a great extraction capacity for triazines. The extraction of atrazine, simazine, cyanazine, ametryn, prometryn and terbutryn using the fabricated extraction needle and followed by GC analysis resulted in detection limits of 2.6, 21, 24, 32, 38 and 42 ng mL -1 , respectively. The fabricated needle proved to be applicable to the analysis of real samples by comparing the results obtained for non-spiked and spiked samples of grape juice, tap water and groundwater.

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Section: Introductionmentioning

confidence: 99%

Inside-Needle Extraction Method Based on Molecularly Imprinted Polymer for Solid-Phase Dynamic Extraction and Preconcentration of Triazine Herbicides Followed by GC–FID Determination

et al. 2012

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“…Os parâmetros cinéticos de adsorção mostraram-se bastante rápidos, de modo que o equilíbrio foi alcançado dentro de 10 minutos. A análise foi realizada por HPLC-UV e mostrou-se adequada para a determinação de DES em amostras de alimentos [69] . Com as vantagens de se evitar a manipulação da amostra entre as etapas de pré-concentração e análise, reduzindo, portanto, riscos de perda de analitos e contaminação e, melhorando a exatidão e a reprodutibilidade, a automação do processo de MISPE pode ainda reduzir muito o tempo dispensado para o preparo da amostra [70] .…”

Section: Metodologias De Sínteseunclassified

Emprego de polímeros de impressão molecular em preparo de amostras para análise de compostos orgânicos: aplicações e tendências

Santos¹,

Abrão²,

Freitas³

et al. 2012

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ResumoOs polímeros de impressão molecular são materiais sintéticos dotados de sítios específicos de reconhecimento. Esses materiais são obtidos por reações de polimerização que fixam, estrategicamente, monômeros funcionais ao redor de uma molécula modelo de acordo com os grupos ligantes e com a estereoquímica de ambas as moléculas. Os MIPs têm sido amplamente empregados em procedimentos de preparo de amostras, como extração e microextração em fase sólida, extração sortiva em barra de agitação, extração com adsorvente magnético, microextração com sorvente empacotado, entre outras. Este artigo de revisão tem como objetivo apresentar o que há de mais recente no emprego de MIP para extração de compostos orgânicos, evidenciando as vantagens de cada aplicação, bem como as mais promissoras tendências que sustentam a evolução e o aperfeiçoamento de cada técnica. Palavras-chavePolímeros de impressão molecular; MIP; preparo de amostras.Molecularly imprinted polymers in sample preparation for organic compounds analysis: applications and trends AbstractMolecularly imprinted polymers are synthetic materials with molecular recognition ability. These materials are obtained by polymerization reactions that fix the functional monomers around the template molecule according with the binding groups and the stereochemistry of both molecules. The MIPs have been extensively used in several applications with emphasis for sample preparation procedures as solid phase extraction, solid phase microextraction, extraction by magnetic sorbents, microextraction by packed sorbent among others. So, the objective of this review is to present the novelty in MIP use for organic compounds extraction and point out the advantages of each application, as well as what is most promising in the evolution and improvement of each technique.

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“…Binding sites with molecular recognition properties are formed after removing template molecules from the polymer, leaving behind cavities complementary in size and shape to the template for the subsequent rebinding process. Nowadays, MIPs are of growing interest for their potential applications as artificial enzymes [33], advanced materials for solid-phase extraction [34], thin coatings for sensor devices [35] and for determination of drugs [36,37], small analytes [38], peptides [39], proteins [40][41][42][43], and cancer biomarkers and viruses [44]. So, nanoparticles were used for selectivity enhancement to improve the cavity accessibility in MIP layer on the electrode surface.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of electrochemical sensor based on molecularly imprinted polymer and nanoparticles for determination trace amounts of morphine

Rezaei

Foroughi-Dehnavi

Ensafi

2015

Ionics

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A simple and rapid electrochemical method developed for the detection of trace amounts of morphine (MO) at the surface of modified pencil graphite electrode (PGE) with multiwall carbon nanotubes (MWCNTs), molecularly imprinted polymer (MIP), and gold nanoparticles (AuNPs).Various types of electrochemical methods containing cyclic voltammetry (CV), square wave voltammetry (SWV), and electrochemical impedance spectroscopy (EIS) were employed to probe the characteristics of the constructed electrode toward morphine. After optimization of several effective parameters, the calibration curve by SWV was linear in two linear domains, over the range of 0.008 to 5 μmol L −1 vs. Ag/AgCl, and the detection limit was 2.9 nM. The relative standard deviation (RSD) for six replicate determinations of 0.05 μmol L −1 MO was found to be 2.57 % (S/N = 3). Finally, the ability of the electrochemical sensor was successfully applied for MO determination in real samples such as human urine and plasma.

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Selective solid-phase extraction using molecular imprinted polymer for the analysis of diethylstilbestrol

Cited by 74 publications

References 19 publications

Inside-Needle Extraction Method Based on Molecularly Imprinted Polymer for Solid-Phase Dynamic Extraction and Preconcentration of Triazine Herbicides Followed by GC–FID Determination

Inside-Needle Extraction Method Based on Molecularly Imprinted Polymer for Solid-Phase Dynamic Extraction and Preconcentration of Triazine Herbicides Followed by GC–FID Determination

Emprego de polímeros de impressão molecular em preparo de amostras para análise de compostos orgânicos: aplicações e tendências

Fabrication of electrochemical sensor based on molecularly imprinted polymer and nanoparticles for determination trace amounts of morphine

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