Determination of ammonium in aqueous samples using new headspace dynamic in-syringe liquid-phase microextraction with in situ derivitazation coupled with liquid chromatography-fluorescence detection.

@article{Muniraj2012DeterminationOA,
  title={Determination of ammonium in aqueous samples using new headspace dynamic in-syringe liquid-phase microextraction with in situ derivitazation coupled with liquid chromatography-fluorescence detection.},
  author={Sarangapani Muniraj and C Yan and Hou-Kung Shih and Vinoth Kumar Ponnusamy and J J Jen},
  journal={Analytica chimica acta},
  year={2012},
  volume={754},
  pages={54-60}
}
A new simultaneous derivatization and extraction method for the preconcentration of ammonia using new one-step headspace dynamic in-syringe liquid-phase microextraction with in situ derivatization was developed for the trace determination of ammonium in aqueous samples by liquid chromatography with fluorescence detection (LC-FLD). The acceptor phase (as derivatization reagent) containing o-phthaldehyde and sodium sulfite was held within a syringe barrel and immersed in the headspace of sample… CONTINUE READING
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