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Estrategias de preconcentración combinadas in-line con la electroforesis capilar

Authors: García Vázquez, Alejandro;

Estrategias de preconcentración combinadas in-line con la electroforesis capilar

Abstract

La combinación in-line de la electroforesis capilar (CE) con las técnicas de microextracción tanto en fase líquida, como la single-drop microextraccion (SDME), y en fase sólida, como la extracción en fase sólida in-line (SPE), y la utilización de la pressure-assisted electrokinetic injection (PAEKI) como técnica de preconcentración electroforética, ha sido evaluada en el desarrollo de métodos basados en CE para la determinación de diferentes familias de contaminantes orgánicos emergentes (EOCs) en diferentes tipos de muestras. Los resultados mostraron que estas estrategias son adecuadas para mejorar la sensibilidad de la CE, debido a que de una manera simple y automatizada se consiguen elevados factores de concentración. Por lo tanto, podemos destacar que el empleo de estas técnicas es una estrategia útil para poder determinar diferentes tipos de analitos a bajos niveles de concentración.

La combinació in-line de l'electroforesi capil·lar (CE) amb les tècniques tant en fase líquida com la single-drop microextraccion (SDME), i en fase sòlida com l'extracció en fase sòlida in-line (SPE), i la utilització de la pressureassisted electrokinetic injection (PAEKI) com a tècnica de preconcentració electroforètica, ha estat avaluada en el desenvolupament de mètodes basats en CE per a la determinació de diferents famílies de contaminants orgànics emergents (EOCs) en diferents tipus de mostres. Els resultats van mostrar que aquestes estratègies són adequades per millorar la sensibilitat de la CE, ja que d´una manera senzilla i automatitzada s´aconsegueixen elevats factors de preconcentració. Per tant, podem destacar que l'ús d'aquestes tècniques és una estratègia útil per determinar diferents tipus de mostres a baixos nivells de concentració.

The in-line combination of capillary electrophoresis (CE) with liquid microextration techniques, as single-drop microextraction (SDME), solid microextraction tecniques as, in-line solid phase extraction (SPE) and the use of pressure-assisted electrokinetic injection (PAEKI), as an electrophoretic preconcentration technique have been evaluated in the development of CE-based methods for the determination of different families of emerging organic pollutants (EOCs) in different kind of samples. The results showed that these strategies are adequate to improve the limited CE sensitivity, especially when it is used in combination with an ultraviolet detector is resolved in a simple and automatic easily. Therefore, we can emphasize that the use of these techniques is a useful strategy to improve the analysis of EOCs through CE.

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Spain
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Keywords

Electrophoresis, Preconcentración, Microextraction, Microextración, Microextració, Ciències, Electroforesis, Preconcentration, Preconcentració, 542, 543

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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