 |
| Titel |
An analytical system for stable isotope analysis on carbon monoxide using continuous-flow isotope-ratio mass spectrometry |
| VerfasserIn |
S. L. Pathirana, C. van der Veen, M. E. Popa, T. Röckmann |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1867-1381
|
| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Measurement Techniques ; 8, no. 12 ; Nr. 8, no. 12 (2015-12-21), S.5315-5324 |
| Datensatznummer |
250116730
|
| Publikation (Nr.) |
 copernicus.org/amt-8-5315-2015.pdf |
|
|
|
|
|
| Zusammenfassung |
| A fully automated system for the determination of δ13C and
δ18O in atmospheric CO has been developed. CO is extracted from
an air sample and converted into carbon dioxide (CO2) using the
Schütze reagent. The isotopic composition is determined with an isotope-ratio
mass spectrometer (IRMS) technique. The entire system is continuously flushed
with high-purity helium (He), the carrier gas. The blank signal of the
Schütze reagent is ~ 4 nmol mol−1, or 1–3 % of the
typical sample size. The repeatability is 0.1 ‰ for
δ13C and 0.2 ‰ for δ18O. The
peak area allows for simultaneous determination of the mole fraction with an
analytical repeatability of ~ 0.7 nmol mol−1 for 100 mL
of ambient air (185.4 nmol mol−1 of CO). An automated single
measurement is performed in only
18 min, and the achieved time efficiency (and small volume of sample air)
allows for repetitive measurements practically. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|