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Volume 9
Journal of Analytical & Bioanalytical Techniques
Mass Spectra & Analytika 2018
September 19-20, 2018
September 19-20, 2018 Singapore
World Congress on
Mass Spectrometry and Analytical Techniques
María Ramos Payán, J Anal Bioanal Tech 2018, Volume 9
DOI: 10.4172/2155-9872-C2-030
A portable chip for microextraction and subsequent optical detection in a single step. Determination of
norfloxacin in water samples.
María Ramos Payán
Department of Analytical Chemistry, University of Seville, 41012, Spain
I
n recent years, the miniaturization of new methodologies has become a dominant trend due to the advantages they present.
On the one hand, microextraction techniques integrated into microfluidic devices on chip have been able to be connected
online to instrumental techniques for direct analysis. The development of new detection devices using optical fibers allows
measuring new compounds more quickly and requiring less sample volume. In this work, we present for the first time the
coupling between two miniaturized systems: a microextraction microchip device bases liquid phase microextraction and an
optical detection device using optical fibers (fluorescence), allowing on-line determination in a single portable device using a
very low sample volume. The first step was a clean-up sample treatment and the extraction of the analyte (norfloxacin), whereas
the second step was the direct determination of norfloxacin using optical fibers. The microextraction procedure was carried
out at optimal extraction conditions (dihexilether as organic solvent, pH 3 as sample solution, pH 12 as acceptor solution, and
1 µL/min as flow rate for sample and acceptor solution). Finally, the device has been successfully applied to environmental
samples.
Biography
María Ramos Payán has expertise in improving sample preparation techniques focused on microfluidic-chip devices as miniaturization. The novelty of her
microfluidic devices offer more advantages than the existing methodologies. Maria has worked at different institutions (University of Seville, University of Huelva,
University of Lund, University of Copenhagen, University of North Carolina, USA, Microelectronic National Center of Barcelona and Universitat Autónoma de
Barcelona). Currently, she works at University of Seville with the aim of implementing optical detection into microfluidic devices for multiple different applications.
ramospayan@us.es