Headspace solvent microextraction.

@article{Theis2001HeadspaceSM,
  title={Headspace solvent microextraction.},
  author={Ashley Theis and A J Waldack and S Michael Hansen and Michael A Jeannot},
  journal={Analytical chemistry},
  year={2001},
  volume={73 23},
  pages={5651-4}
}
A hanging microliter drop of 1-octanol is shown to be an excellent preconcentration medium for headspace analysis of volatile compounds in an aqueous matrix by gas chromatography (GC) or gas chromatography/mass spectrometry (GC/MS). Model compounds benzene, toluene, ethylbenzene, and o-xylene (BTEX) are conveniently and rapidly preconcentrated in the microdrop. An internal standard, decane, is present in the organic extracting solvent, and linear calibration curves of relative peak area versus… CONTINUE READING

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