Nitrogen isotopic analyses by isotope-ratio-monitoring gas chromatography/mass spectrometry.

@article{Merritt1994NitrogenIA,
  title={Nitrogen isotopic analyses by isotope-ratio-monitoring gas chromatography/mass spectrometry.},
  author={Dr T. Allen Merritt and John M. Hayes},
  journal={Journal of the American Society for Mass Spectrometry},
  year={1994},
  volume={5},
  pages={387-97}
}
Amino acids containing natural-abundance levels of 15N were derivatized and analyzed isotopically using a technique in which individual compounds are separated by gas chromatography, combusted on-line, and the product stream sent directly to an isotope-ratio mass spectrometer. For samples of N2 gas, standard deviations of ratio measurement were better than 0.1% (Units for delta are parts per thousand or per million (%).) for samples larger than 400 pmol and better than 0.5% for samples larger… CONTINUE READING

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