On the usage of absolute (x) and relative (δ) values of 15N abundance

•We endorse the IUPAC terminology for stable isotope reporting.•Absolute (x) and relative (δ) values of 15N abundance are defined.•The procedure for conversion of x to δ values is described.•The relationship between δ and excess atom fraction 15N is linear.•0.003649 × 10–3 excess atom fraction 15N a...

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Bibliographic Details
Published inSoil biology & biochemistry Vol. 85; pp. 51 - 53
Main Authors Chalk, Phillip Michael, Inácio, Caio T., Craswell, Eric T., Chen, Deli
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.06.2015
Subjects
15N abundance
15N enrichment
Atom fraction 15N
Excess atom fraction 15N
δ15N
δ15N
15N enrichment
15N abundance
Excess atom fraction 15N
Atom fraction 15N
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Summary:•We endorse the IUPAC terminology for stable isotope reporting.•Absolute (x) and relative (δ) values of 15N abundance are defined.•The procedure for conversion of x to δ values is described.•The relationship between δ and excess atom fraction 15N is linear.•0.003649 × 10–3 excess atom fraction 15N approximates 1δ/‰.
ISSN:0038-0717
1879-3428
DOI:10.1016/j.soilbio.2015.02.027