Skip to main content
Article
Single drop microextraction in a 96-well plate format: A step toward automated and high-throughput analysis
Analytica Chimica Acta
  • Gabriela Mafra, Universidade Federal de Santa Catarina
  • Augusto A. Vieira, Universidade Federal de Santa Catarina
  • Josias Merib, Universidade Federal de Ciências da Saúde de Porto Alegre
  • Jared L. Anderson, Iowa State University
  • Eduardo Carasek, Universidade Federal de Santa Catarina
Document Type
Article
Disciplines
Publication Version
Accepted Manuscript
Publication Date
1-1-2019
DOI
10.1016/j.aca.2019.02.013
Abstract

In this study, an innovative and high-throughput parallel-single-drop microextraction (Pa-SDME) using the [P6,6,6,14+]2[MnCl42−] magnetic ionic liquid (MIL) as extraction phase is demonstrated, for the first time, in the determination of methylparaben, ethylparaben, propylparaben, bisphenol A, butylparaben, benzophenone and triclocarban from environmental aqueous samples. This experimental setup comprised of a 96-well plate system containing a set of magnetic pins which aided in stabilizing the MIL drops and enabled the simultaneous extraction of up to 96 samples. Using this low-cost experimental apparatus, the sample throughput was lower than 1 min per sample. This novel approach exhibits a number of advantages over classical SDME approaches, particularly in maintaining a stable solvent microdrop and facilitating high-throughput analysis. Experimental conditions were carefully optimized using one-factor-at-a-time and multivariate designs. The optimal conditions employed 5.38 ± 0.55 mg (n = 10) of MIL, a sample volume of 1.5 mL at pH 6, and dilution in 20 μL of acetonitrile. The analytical parameters of merit were determined under the optimized conditions and highly satisfactory results were achieved, with LODs ranging from 1.5 to 3 μg L−1 and coefficients of determination higher than 0.994. Intraday and interday precision ranged from 0.6 to 21.3% (n = 3) and 10.4–20.2% (n = 9), respectively, with analyte relative recovery in three aqueous samples ranging between 63% and 126%.

Comments

This is a manuscript of an article published as Mafra, Gabriela, Augusto A. Vieira, Josias Merib, Jared L. Anderson, and Eduardo Carasek. "Single drop microextraction in a 96-well plate format: a step toward automated and high-throughput analysis." Analytica Chimica Acta (2019). DOI: 10.1016/j.aca.2019.02.013. Posted with permission.

Creative Commons License
Creative Commons Attribution-NonCommercial-No Derivative Works 4.0 International
Copyright Owner
Elsevier B.V.
Language
en
File Format
application/pdf
Citation Information
Gabriela Mafra, Augusto A. Vieira, Josias Merib, Jared L. Anderson, et al.. "Single drop microextraction in a 96-well plate format: A step toward automated and high-throughput analysis" Analytica Chimica Acta (2019)
Available at: http://works.bepress.com/jared_anderson/27/