1978 - GC-C-IRMS

First gas chromatograph-combustion-isotope ratio mass spectrometer (GC-C-IRMS) for 13C and 15N at natural abundances.

• D.E. Matthews, J.M. Hayes
  Isotope-ratio-monitoring gas chromatography-mass spectrometry
  Anal. Chem., 1978, 50(11), p.1465

  
  
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