Title: Methods to Reduce Interference Effects in Thermal Conversion Elemental Analyzer/continuous Flow Isotope Ratio Mass Spectrometry Delta18O Measurements of Nitrogen-containing Compounds
Authors: ACCOE FREDERIKBERGLUND MICHAELGEYPENS BENNYTAYLOR Philip
Citation: RAPID COMMUNICATIONS IN MASS SPECTROMETRY vol. 22 no. 14 p. 2280-2286
Publisher: JOHN WILEY & SONS LTD
Publication Year: 2008
JRC N°: JRC42018
ISSN: 0951-4198
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC42018
DOI: 10.1002/rcm.3609
Type: Articles in Journals
Abstract: On-line determination of the oxygen isotopic composition (delta 18O value) in organic and inorganic samples is commonly performed using a thermal conversion elemental analyzer linked to a continuous flow isitope ratio mass spectrometer (TC-EA-IRMS). Accurate delta 18O analysis of N-containing compounds (like nitrates) by TC-EA-IRMS may be complicated because of interference of the N2-peak on the m/z 30 signal of the CO peak, which s used for calculation of the delta 18O value. The aim of this study was to evaluate the effectiveness of different strategies to eliminate this interference.
JRC Institute:Institute for Reference Materials and Measurements

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