Instrument: Isotope-ratio Mass Spectrometer

Dataset: 
Chlorophyll d15N in Lake Erie
Instrument: 
Isotope-ratio Mass Spectrometer
Instrument Short Name: IR Mass Spec; IRMS
Community Standard Description
(http://vocab.nerc.ac.uk/collection/L05/current/LAB16/)
Instrument Description:

The Isotope-ratio Mass Spectrometer is a particular type of mass spectrometer used to measure the relative abundance of isotopes in a given sample (e.g. VG Prism II Isotope Ratio Mass-Spectrometer).

PI supplied instrument name: Delta V Advantage
Dataset-specific description

δ15N of chlorophyll was measured using the denitrifier method (Sigman et al., 2001), on a Delta V Advantage isotope ratio mass spectrometer with a custom built purge and trap system. Isotopic measurements were standardized to the N2 reference scale using standard reference materials IAEA N3 and USGS 34.