Interlaboratory comparison of reference materials for nitrogen-isotope-ratio measurements

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Abstract

Aliquots of seven different reference materials were distributed for an interlaboratory comparison of stable nitrogen-isotope-ratio measurements. Results from 15 laboratories were compiled and evaluated selectively to yield provisional values of 515N for each material, i, with respect to atmospheric N2 (o1SN,7air). The 515N values reported by the different laboratories are correlated in such a way that some of the major discrepancies may be removed by normalization (/. e., by altering the length of the ô N scale for each laboratory by an amount defined by local measurements of reference materials with extreme values).

Publication type Report
Publication Subtype Other Government Series
Title Interlaboratory comparison of reference materials for nitrogen-isotope-ratio measurements
Year Published 1995
Language English
Publisher International Atomic Energy Agency
Publisher location Vienna, Austria
Description 16 p.
Larger Work Type Report
Larger Work Subtype Other Government Series
Larger Work Title Reference and intercomparison materials for stable isotopes of light elements, IAEA TECDOC 825
First page 51
Last page 66
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