Microextraction across supported liquid membranes forced by pH gradients and electrical fields.

@article{Gjelstad2007MicroextractionAS,
  title={Microextraction across supported liquid membranes forced by pH gradients and electrical fields.},
  author={Astrid Gjelstad and Torill Marita Andersen and Knut Einar Rasmussen and Stig Pedersen-Bjergaard},
  journal={Journal of chromatography. A},
  year={2007},
  volume={1157 1-2},
  pages={
          38-45
        }
}
The present work has for the first time compared extraction of basic analytes across a supported liquid membrane (SLM) based on (1) passive diffusion in a pH gradient sustained over the SLM and (2) electrokinetic migration in an electrical field sustained over the SLM. For the passive diffusion experiments, performed as liquid-phase microextraction (LPME), five basic drugs were extracted under strong agitation from alkaline samples (10mM NaOH), through 2-nitrophenyl octylether immobilized in… CONTINUE READING

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