10.1021/ac071040p.s003
Lance E. Christensen
Lance E.
Christensen
Benjamin Brunner
Benjamin
Brunner
Kasey N. Truong
Kasey N.
Truong
Randall E. Mielke
Randall E.
Mielke
Christopher R. Webster
Christopher R.
Webster
Max Coleman
Max
Coleman
Measurement of Sulfur Isotope Compositions by
Tunable Laser Spectroscopy of SO<sub>2</sub>
American Chemical Society
2007
Tunable Laser Spectroscopy
δ34 S
Tunable laser spectroscopy
2Sulfur isotope measurements offer
Δ33 S measurements
combusted gas samples
mass spectrometer measurements
analysis
tunable laser spectroscopy
Sulfur Isotope Compositions
2 rovibrational transition
2007-12-15 00:00:00
Journal contribution
https://acs.figshare.com/articles/journal_contribution/Measurement_of_Sulfur_Isotope_Compositions_by_Tunable_Laser_Spectroscopy_of_SO_sub_2_sub_/2968675
Sulfur isotope measurements offer comprehensive information on the origin and history of natural materials.
Tunable laser spectroscopy is a powerful analytical technique for isotope analysis that has proven itself readily
adaptable for in situ terrestrial and planetary measurements. Measurements of δ<sup>34</sup>S in SO<sub>2</sub> were made using
tunable laser spectroscopy of combusted gas samples
from six sulfur-bearing solids with δ<sup>34</sup>S ranging from −34
to +22‰ (also measured with mass spectrometry).
Standard deviation between laser and mass spectrometer
measurements was 3.7‰ for sample sizes of 200 ± 75
nmol SO<sub>2</sub>. Although SO<sub>2</sub>(g) decreased 9% over 15 min
upon entrainment in the analysis cell from wall uptake,
observed fractionation was insignificant (+0.2 ± 0.6‰).
We also describe a strong, distinct <sup>33</sup>SO<sub>2</sub> rovibrational
transition in the same spectral region, which may enable
simultaneous δ<sup>34</sup>S and Δ<sup>33</sup>S measurements.