Artículos de revistas
Electric Field-assisted Solid Phase Extraction And Cleanup Of Ionic Compounds In Complex Food Matrices: Fluoroquinolones In Eggs
Registro en:
1873-3573
Talanta. ELSEVIER SCIENCE BV, n. 152, p. 498 - 503.
1873-3573
WOS:000373651000060
10.1016/j.talanta.2016.02.047
Autor
Ribeiro
CC; Orlando
RM; Rohwedder
JJR; Reyes
FGR; Rath
S
Institución
Resumen
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) The use of electric fields as additional driving forces in sample preparation techniques is an innovative approach that is environmentally friendly, straightforward, and able to overcome several limitations of conventional sample preparation procedures. In this work, the advantages of electric field-assisted solid phase extraction (E-SPE) using syringe-type cartridges were demonstrated for the extraction of four fluoroquinolones (FQs) in their anionic forms. The FQs were extracted from eggs and subsequently determined by UHPLC-MS/MS. The use of electric fields during the washing and final elution steps resulted in a significant improvement of the extraction efficiencies for almost all FQs when compared to conventional SPE. Intra- and inter-day assays showed coefficients of variation below 10%. The better cleanup also resulted in the appearance of less precipitated matter in the final eluate, as well as reduced matrix effects. The results showed that the electrophoretic forces derived from electric fields are a promising way of significantly increasing the extraction efficiency of ionic analytes, while minimizing matrix effects associated with complex samples. (C) 2016 Elsevier B.V. All rights reserved. 152
498 503 FAPESP [2012/11401-3, 2008/03064-1, 2013/09543-7] CNPq INCTAA/CNPq/FAPESP [2008/57808-1, 573894/2008-6] Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)