title: Improved precision of coupled delta13C and delta15N measurements from single samples using an elemental analyzer/isotope ratio mass spectrometer combination with a post-column six-port valve and selective CO2 trapping; improved halide robustness of the combustion reactor using CeO2.
authors.forename: P D
authors.initials: PD
authors.lastname: Brooks
authors.forename: H
authors.initials: H
authors.lastname: Geilmann
authors.forename: R A
authors.initials: RA
authors.lastname: Werner
authors.forename: W A
authors.initials: WA
authors.lastname: Brand
mesh_terms: D002247:Carbon Isotopes / Q000032:analysis; D013058:Mass Spectrometry / Q000379:methods*; D009587:Nitrogen Isotopes / Q000032:analysis; D027861:Prunus / Q000737:chemistry; D015203:Reproducibility of Results
chemical_list: D002247:Carbon Isotopes; D009587:Nitrogen Isotopes