Radiocarbon and Stable Carbon Analysis of Dissolved Methane and Carbon Dioxide from the Profile of a Raised Peat Bog
Bibliographic Data
| ID | 9242009 |
|---|---|
| Authors | M H Garnett (0000-0001-6486-2126), S M L Hardie, C Murray (0000-0003-1216-2800) |
| Year | 2011 |
| Volume | 53 |
| Issue | 1 |
| Pages | 71-83 |
| Publication date | 2011-01-01 |
| 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/s0033822200034366 |
| OpenAlex | W314508890 |
| Language | EN |
| Citations received | 5 |
| References cited | 24 |
We developed and tested a new method to separate CO 2 and CH 4 from bulk gas samples for radiocarbon and stable-carbon analysis that utilizes a zeolite molecular sieve. To validate the technique, tests were performed using a suite of standard gases, composed of CO 2 and CH 4 of distinctly different isotopic composition. We employed the method to investigate the carbon isotopic composition of samples of dissolved CO 2 and CH 4 collected in situ from the near surface to deep layers of an ombrotrophic raised peat bog. Results showed that the age of both the CO 2 and CH 4 components of the dissolved gases increased with depth from ≃0–300 BP at 0.25 m to ≃4000 BP at 4 m. CH 4 was mainly similar or slightly older in age compared to CO 2 , with the greatest difference in ages occurring at 1 m depth where CH 4 was older by 430–615 yr. The δ 13 C values of CO 2 increased with depth from −12.4‰ and −8.0‰ at 0.25 m to +6.9‰ and +8.3‰ at 4 m, whereas the δ 13 C of CH 4 stayed in the range −58.4‰ to −70.6‰. The 14 C results from the deepest layers are consistent with a similar source for both gases. 14 C ages for the CO 2 component were younger compared to CH 4 , within the shallower depths of the peat bog (≤1 m) and demonstrate the incorporation of acrotelm-derived respired CO 2 into the catotelm
Archaeology · Bog · Carbon dioxide · Carbon fibers · Dissolved organic carbon · Isotopes of carbon · Methane · Mineralogy · Ombrotrophic · Peat · Radiocarbon dating · Total organic carbon · Chemistry · Coastal wetland ecosystem dynamics · Geology and Paleoclimatology Research · Materials Science · Peatlands and Wetlands Ecology · Environmental Chemistry · Geology
The Influence of Plant Species and Pretreatment on the 14 C Age of Carex -Dominated Peat Plants of a Peat Core From Jinchuan Mire, Ne China
C Measurement of Samples for Environmental Science Applications at the National Environmental Isotope Facility (Neif) Radiocarbon Laboratory, Suerc, Uk
Compound-Specific Radiocarbon Analysis of Atmospheric Methane
Radiocarbon Analysis of Methane at the Nerc Radiocarbon Facility (East Kilbride)
Time-Integrated Collection of Co 2 for 14 C Analysis From Soils
Carbon Dioxide Capture Using a Zeolite Molecular Sieve Sampling System for Isotopic Studies ( 13 C and 14 C) of Respiration
Carbon Isotopic Composition of Deep Carbon Gases in an Ombrogenous Peatland, Northwestern Ontario, Canada
Discussion Reporting of 14 C Data
Report of the Tiri Workshop, Saturday 13 August 1994
| Citations per year | 0.71 |
|---|---|
| Citation span | 2019 - 2024 (6) |
| Highly cited | No |