Isotope ratio data are increasingly used in a variety of fields including, ecology, marine sciences, earth and geosciences, forensic science, hydrology, medicine, food (including food authenticity and origin), and climate science.
Over the years, there have also been changes to guidelines for measurement methods, calibration conventions and even to international measurement standards that form the base of the traceability chain for isotope delta values for H, C, N, O and S.
It is impossible to combine isotope ratio data from a variety of sources unless the data are accompanied by a clear description of traceability and other method details.
The UK National Measurement Laboratory at LGC was part of an international group that compiled the IUPAC Technical Report presenting minimum requirements for reporting isotope ratio data, covering analytical procedure, traceability, data processing and uncertainty evaluation.
This report will help in the standardisation of methods that involve the measurement of stable isotopes.
Read the IUPAC Technical Report on minimum requirements for publishing hydrogen, carbon, nitrogen, oxygen and sulfur stable-isotope delta results.