Processing of CO 2 Samples Collected Using Zeolite Molecular Sieve for 14 C Analysis at the Nerc Radiocarbon Facility (East Kilbride, UK)
Bibliographic Data
| ID | 9243218 |
|---|---|
| Authors | M H Garnett (0000-0001-6486-2126), C Murray (0000-0003-1216-2800) |
| Year | 2013 |
| Volume | 55 |
| Issue | 2 |
| Pages | 410-415 |
| Publication date | 2013-01-01 |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | Radiocarbon (JOURNAL) |
| Journal identifiers | ISSN: 0033-8222 • E-ISSN: 1945-5755 |
| Publisher | Cambridge University Press (CUP) (PUBLISHER) |
| DOI | 10.1017/s0033822200057532 |
| OpenAlex | W4247675576 |
| Language | EN |
| Citations received | 4 |
| References cited | 16 |
Cartridges containing a zeolite molecular sieve are used for the field collection of CO 2 from a variety of environments (e.g. atmosphere, soil respiration, evasion from surface waters) for accelerator mass spectrometry (AMS) radiocarbon analysis by the NERC Radiocarbon Facility. Previously, sample CO 2 was recovered from the sieves by heating under vacuum prior to cryogenic purification and graphitization. An additional heating and evacuation stage was used to prepare the cartridge for the next sample. We have recently developed an alternative method using heating and purging with nitrogen gas to remove sample CO 2 from the molecular sieve. An infrared gas analyzer (IRGA) is used to continuously monitor CO 2 content in the purge gas. The preparation of the molecular sieve cartridge for the next use is performed simultaneously and the IRGA reading is used to verify that all sample CO 2 has been removed from the sieve, ensuring insignificant carryover of CO 2 into the next sample. We present the results of a suite of standards of distinctly different 14 C and stable-carbon isotope composition, which we used to confirm the reliability of the new procedure. The new method has considerably reduced the time required to process a single sample from at least 2 hr to less than 40 min, and reduced the minimum sample size by 50
Accelerator mass spectrometry · Carbon fibers · Cartridge · Chromatography · Mass spectrometry · Molecular sieve · Radiocarbon dating · Radiochemistry · Sample Preparation · Atmospheric and Environmental Gas Dynamics · Chemistry · Environmental Science · Geology and Paleoclimatology Research · Isotope Analysis in Ecology · Materials Science · Environmental Chemistry · Geology
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Carbon Dioxide Capture Using a Zeolite Molecular Sieve Sampling System for Isotopic Studies ( 13 C and 14 C) of Respiration
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Report of the Tiri Workshop, Saturday 13 August 1994
| Citations per year | 0.4 |
|---|---|
| Citation span | 2016 - 2021 (6) |
| Highly cited | No |