Determination of ractopamine in pork by using electrochemiluminescence inhibition method combined with molecularly imprinted stir bar sorptive extraction

Wang, Sui; Wei, Jing; Hao, Tingting; Guo, Zhiyong

doi:10.1016/j.jelechem.2011.11.011

Cited by 40 publications

(5 citation statements)

References 39 publications

(64 reference statements)

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“…Based on the previously reported quenching mechanism 3,29,30 and the results of our experiments, we proposed a possible quenching mechanism in the presence of I − (Scheme S1, supporting information). In the ECL routes, the production of the highly…”

mentioning

confidence: 54%

Unique Electrochemiluminescence Behavior of 4-Chromanone and Chromone and their Sensing Application

Qiu¹,

Qing²,

Wang³

et al. 2020

J. Electrochem. Soc.

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4-Chromanone and chromone, these two structurally similar pharmaceutical intermediates play a vital role in drug synthesis, but their related electrochemical properties have not been reported. In this work, we have found that 4-chromanone and chromone can generate strong electrochemiluminescence (ECL) during their reduction by using K2S2O8 as co-reactant in H3BO3-Na2B4O7 buffer solution. The ECL reaction mechanism has been investigated carefully by studying their fluorescence (FL) spectrum, ECL spectrum, and the important role of co-reactants in the system. Moreover, it has been found that iodide ion (I−) can inhibit the ECL signal of 4-chromanone and the ECL decrease degree is related to the amount of added I−. Therefore, a new ECL method for the detection of iodide ion has been established with high sensitivity, good selectivity and wide linear range, which can be used for detecting I− in real samples.

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mentioning

confidence: 54%

Unique Electrochemiluminescence Behavior of 4-Chromanone and Chromone and their Sensing Application

Qiu¹,

Qing²,

Wang³

et al. 2020

J. Electrochem. Soc.

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“…Depois da polimerização, o material foi retirado da seringa, lavado com solução de ácido acético -água e água duplamente deionizada repetidas vezes e sonicado à temperatura ambiente para remoção de substâncias remanescentes da síntese. Os resultados mostraram que o material pôde ser utilizado por pelo menos dez vezes sem perder sua capacidade de extração [84] . Li et al vêm desenvolvendo diversos trabalhos utilizando MISBSE em diferentes áreas de aplicação.…”

Section: Extração Sortiva Em Barra De Agitação Molecularmente Impressunclassified

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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“…16,17 Electrochemiluminescence (ECL) has been proven to be a detection method with high sensitivity and was applied to prepare MIP-ECL sensors recently. [18][19][20][21] But the ECL intensities of MIP-ECL sensors relied on the concentration of the luminescence reagents in solution and their diffusion rates, which limited the improvement of the sensitivity of these sensors further.…”

Section: Introductionmentioning

confidence: 99%

A molecularly imprinted sensor based on an electrochemiluminescent membrane for ultratrace doxycycline determination

Lin

et al. 2015

Analyst

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A new molecularly imprinted sensor was developed based on an electroluminescent molecularly imprinted polymer (MIP) membrane and used for doxycycline determination. The MIP was prepared by electropolymerization of pyrogallol doped with alizarin red. An electrochemiluminescence (ECL) signal was produced by the oxidation of the poly-pyrogallol polymer and reaction with alizarin red. The luminescence intensity was enhanced by doxycycline molecules which were re-adsorbed in cavities in MIP due to the energy transfer of the doxycycline oxidized intermediate to alizarin red. The changes of ECL intensities were linear with the concentrations of doxycycline in the range of 2 × 10(-10) to 5 × 10(-8) mol L(-1). The detection limit was 5.17 × 10(-11) mol L(-1). This method was utilized to determine doxycycline residuals in fish muscles with satisfactory results.

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Determination of ractopamine in pork by using electrochemiluminescence inhibition method combined with molecularly imprinted stir bar sorptive extraction

Cited by 40 publications

References 39 publications

Unique Electrochemiluminescence Behavior of 4-Chromanone and Chromone and their Sensing Application

Unique Electrochemiluminescence Behavior of 4-Chromanone and Chromone and their Sensing Application

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

A molecularly imprinted sensor based on an electrochemiluminescent membrane for ultratrace doxycycline determination

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