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|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 FREDERIK; BERGLUND MICHAEL; GEYPENS BENNY; TAYLOR Philip|
|Citation:||RAPID COMMUNICATIONS IN MASS SPECTROMETRY vol. 22 no. 14 p. 2280-2286|
|Publisher:||JOHN WILEY & SONS LTD|
|Type:||Articles in periodicals and books|
|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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