Molecularly imprinted polymer coated on stainless steel fiber for solid-phase microextraction of chloroacetanilide herbicides in soybean and corn

Hu, Xiaogang; Dai, Guimei; Huang, Jiajing; Ye, Tingting; Fan, Huajun; Tang, Yawen; Yu, Ying; Liang, Yong

doi:10.1016/j.chroma.2010.07.011

Cited by 62 publications

(31 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…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]. In recent years, some SPME fibers have been developed based on strong binding of aluminum and stainless steel wires with MIP layers [33,34].…”

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

View full text Add to dashboard Cite

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.

show abstract

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

View full text Add to dashboard Cite

show abstract

“…Os limites de detecção para metolachlor, propisochlor e butaclor em amostras de milho e soja, foram de 3,0; 9,6 e 38 µg L -1 , respectivamente. Foi verificado que a proporção de monômero em relação ao ALC foi de extrema importância para a seletividade do MIP [97] . Em um trabalho realizado por Barahona et al, foi desenvolvido um método empregando-se MISPME para análise de tiabendazol em amostras de suco de laranja.…”

Section: Microextração Em Fase Sólida Molecularmente Impressa -Mispmeunclassified

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

Santos¹,

Abrão²,

Freitas³

et al. 2012

View full text Add to dashboard Cite

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.

show abstract

“…Stainless-steel wire has been widely applied to obtain SPME fibers by electropolymerization of conductive polymers or by physical adhesion of the sorbent. Recently, the use of covalently bonded sorbent on stainless steel for fabrication of unbreakable SPME fibers has been reported [13,14]. In this work for fabricating an unbreakable SPME fiber, a self-assembled monolayer (SAM) of 3-(trimethoxysilyl)-1-propanthiol (3-TMSPT) was grafted on an Au wire and then a stationary phase by electrodeposition of 3-(methoxysilyl)propylmethacrylate (3-TMSPMA) as a precursor, tetramethyl orthosilicate (TMOS) and polyethylene glycol (PEG) as a coating polymer was produced.…”

Section: Introductionmentioning

confidence: 99%

Novel unbreakable solid‐phase microextraction fiber by electrodeposition of silica sol–gel on gold

Bagheri

Sistani

Ayazi

2011

J of Separation Science

View full text Add to dashboard Cite

A new technique for preparation of an unbreakable solid-phase microextraction (SPME) fiber, using sol-gel technology is developed. Primarily, an ultrathin two-dimensional intermediate film was prepared by hydrolysis of 3-(trimethoxysilyl)-1-propanthiol self-assembled monolayer grafted onto gold, then a stationary phase by electrodeposition of 3-(trimethoxysilyl)propylmethacrylate as a precursor, tetramethyl orthosilicate and polyethylene glycol as a coating polymer was produced. The scanning electron microscopy images revealed that the new fiber exhibits a rather porous and homogenous surface. The thermal stability of the fabricated fiber was investigated by thermogravimetric analysis. The applicability of the prepared fiber coating in conjunction with gas chromatography-mass spectrometry was examined by SPME of polycyclic aromatic hydrocarbons, as model analytes, from aquatic media. An extraction time of 20 min at 50 °C gave maximum peak areas when NaCl, 15% was added to the aqueous samples. Limits of detection were in the range of 0.01-0.02 ng/mL and relative standard deviation values were in the range of 4-16% at 1 ng/mL. The developed method was successfully applied for the analysis of real water samples while the relative recovery percentage was in the range of 102-118%.

show abstract

Molecularly imprinted polymer coated on stainless steel fiber for solid-phase microextraction of chloroacetanilide herbicides in soybean and corn

Cited by 62 publications

References 41 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

Novel unbreakable solid‐phase microextraction fiber by electrodeposition of silica sol–gel on gold

Contact Info

Product

Resources

About