par Cui, Xiaojuan;Chen, Weidong;Sigrist, Markus Werner;Fertein, Eric;Flament, Pascal;De Bondt, Kevin;Mattielli, Nadine 
Référence Analytical chemistry, 92, 6, page (4512-4517)
Publication Publié, 2020-03-01
Référence Analytical chemistry, 92, 6, page (4512-4517)
Publication Publié, 2020-03-01
Article révisé par les pairs
| Résumé : | A compact isotope ratio sensor based on laser absorption spectroscopy at 2.7 μm was developed for high precision and simultaneous measurements of the D/H, 18O/16O and 17O/16O isotope ratios in glacier water. Measurements of the oxygen and hydrogen isotope ratios in glacier water demonstrate a 1σ precision of 0.3‰ for δ18O, 0.2‰ for δ17O, and 0.5‰ for δ2H, respectively. The δvalues of the working standard glacier water obtained by the calibrated sensor system is basically identical to the IRMS measurement results with a very high calibration accuracy from 0.17‰ to 0.75‰. Preliminary results on the reproducibility measurements display a standard deviation of 0.13‰ for δ18O, 0.13‰ for δ17O, and 0.64‰ for δ2H, respectively. |
