| Affiliation | - West Australian Biogeochemistry Centre, School of Biological Sciences, The University of Western Australia , Crawley , WA , Australia
- Commonwealth Scientific and Industrial Research Organisation, Oceans and Atmosphere , Aspendale , VIC , Australia
- United States Geological Survey , Reston , VA , USA
- Fondazione Edmund Mach , San Michele all’Adige , Italy
- National Physical Laboratory , Teddington , UK
- International Atomic Energy Agency , Vienna , Austria
- Queensland Health Forensic and Scientific Services , Archerfield , Australia
- National Research Council of Canada
- National Research Council Canada , Ottawa , ON , Canada
- Geotop & Département des sciences de la Terre et de l’atmosphère, Université du Québec à Montréal , Montreal , Canada
- Stable Isotopes Research Group and Water Resources Management Laboratory, Universidad Nacional Costa Rica , Heredia , Costa Rica
- National Institute of Standards and Technology, United States Department of Commerce , Gaithersburg , MD , USA
- National Institute for Research and Development of Isotopic and Molecular Technologies , Cluj-Napoca , Romania
- Centre for Isotope Research, University of Groningen , Groningen , Netherlands
- Max Planck Institute for Biogeochemistry , Jena , Germany
- Department of Environmental Sciences , J. Stefan Institute , Ljubljana , Slovenia
- National Isotope Centre, GNS Science , Lower Hutt , New Zealand
- Department of Earth and Atmospheric Sciences , Indiana University , Bloomington , IN , USA
- Department of Earth and Planetary Sciences , The Weizmann Institute of Science , Rehovot , Israel
- Eurofins Analytics France , Nantes , France
- Bureau International des Poids et Mesures , Sevres Cedex , France
- Institute of Quality Standard and Testing Technology for Agri-Products, Chinese Academy of Agriculture Sciences , Beijing , China
- National Measurement Laboratory, LGC , Teddington , UK
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| Abstract | Stable hydrogen, carbon, nitrogen, oxygen and sulfur (HCNOS) isotope compositions expressed as isotope-delta values are typically reported relative to international standards such as Vienna Standard Mean Ocean Water (VSMOW), Vienna Peedee belemnite (VPDB) or Vienna Cañon Diablo Troilite (VCDT). These international standards are chosen by convention and the calibration methods used to realise them in practice undergo occasional changes. To ensure longevity and reusability of published data, a comprehensive description of (1) analytical procedure, (2) traceability, (3) data processing, and (4) uncertainty evaluation is required. Following earlier International Union of Pure and Applied Chemistry documents on terminology and notations, this paper proposes minimum requirements for publishing HCNOS stable-isotope delta results. Each of the requirements are presented with illustrative examples. |
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