An interlaboratory study to test instrument performance of hydrogen dual-inlet isotope-ratio mass spectrometers
Links
- More information: Publisher Index Page (via DOI)
- Download citation as: RIS | Dublin Core
Abstract
An interlaboratory comparison of forty isotope-ratio mass spectrometers of different ages from several vendors has been performed to test 2H/1H performance with hydrogen gases of three different isotopic compositions. The isotope-ratio results (unsufficiently corrected for H3 + contribution to the m/z = 3 collector, uncorrected for valve leakage in the change-over valves, etc.) expressed relative to one of these three gases covered a wide range of values: –630‰ to –790‰ for the second gas and –368‰ to –462‰ for the third gas. After normalizing the isotopic abundances of these test gases (linearly adjusting the δ values so that the gases with the lowest and highest 2H content were identical for all laboratories), the standard deviation of the 40 measurements of the intermediate gas was a remarkably low 0.85‰. It is concluded that the use of scaling factors is mandatory for providing accurate internationally comparable isotope-abundance values. Linear scaling for the isotope-ratio scales of gaseous hydrogen mass spectrometers is completely adequate.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | An interlaboratory study to test instrument performance of hydrogen dual-inlet isotope-ratio mass spectrometers |
| Series title | Fresenius' Journal of Analytical Chemistry |
| DOI | 10.1007/s002160100814 |
| Volume | 370 |
| Issue | 4 |
| Year Published | 2001 |
| Language | English |
| Publisher | Springer Link |
| Description | 5 p. |
| First page | 358 |
| Last page | 362 |
| Google Analytic Metrics | Metrics page |