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Water isotope calculation tool

A thoroughly validated spreadsheet for calculating isotopic abundances (2H, 17O, 18O) for mixtures of waters with different isotopic compositions

V. Faghihi, H. A. J. Meijer, M. Gröning

Rapid Communications in mass spectrometry, 2015, 29:1351–1356.

We present a user-friendly, thoroughly validated spreadsheet for calculating 2H, 17O and 18O stable isotopic abundances and respective isotope delta values for mixtures of waters with arbitrary isotopic compositions. The spreadsheet allows the mixing of up to ten different waters, of which up to five can be specified using their isotopic abundances and up to five others using their isotope delta values.

The spreadsheet for calculating isotopic abundances for mixtures of waters with different isotopic compositions is implemented in Microsoft Excel, and is freely available*. This tool is applicable in the production and characterization of singly and doubly labelled water (DLW) mother solutions, the analysis of isotope dilution measurements, the deduction of unknown isotope values of constituents for mixtures of natural waters, and many other applications. The spreadsheet is protected to prevent mistakes when using it. For more sophisticated use (like using it in iterative processes) the sheet can be un-protected by using the password CIO/RUG.

* In case its use is instrumental for published results a proper reference to our paper should be made.

Last modified:12 April 2017 3.42 p.m.