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Improved Preconcentration of Triazines from Aqueous Samples in a Supported Liquid Membrane with Electric Field

Author Affiliations

  • 1Instituto de Química Aplicada, Universidad del Papaloapan, Circuito Central 200, 68301 Tuxtepec, Oaxaca, MÉXICO
  • 2Ingeniería Ambiental, Universidad del Mar, Ciudad Universitaria S/N, 70902 Puerto Ángel, Oaxaca, MÉXICO
  • 3Instituto de Hidrología, Universidad Tecnológica de la Mixteca, 69 000 Huajuapan de León, Oaxaca, MÉXICO

Res.J.chem.sci., Volume 2, Issue (12), Pages 46-52, December,18 (2012)

Abstract

In the present work, an electric field was attached to a home-made supported liquid membrane cell to enhance the efficiency of the extraction; the analytical manifold consisted of a flow injection-UV-Vis spectrophotometry system. A homologous series of herbicides (atrazine, ametryn, and atraton) was used as target analytes. The solvent 1,2-DCE was found to be a promising supporting liquid in the membrane, even without the imposition of the electric field. Under the optimized conditions, an enrichment factor of 16.1 for ametryn, of 10.0 for atrazine and of 7.7 for atraton were obtained, with a sampling rate of 3.3 samples h-1

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