Garnett, M.H. and Dean, J.F. (2024) A time-integrated sampler for radiocarbon analysis of aquatic methane. Radiocarbon, (doi: 10.1017/RDC.2024.31) (Early Online Publication)
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Abstract
Freshwater ecosystems are responsible for a large proportion of global methane emissions to the atmosphere. The radiocarbon (14C) content of this aquatic methane is useful for determining the age and source of this important greenhouse gas. Several methods already exist for the collection of aquatic methane for radiocarbon analysis, but they tend to only sample over short periods of time, which can make them unsuitable for characterizing aquatic methane over longer timespans, and vulnerable to missing short-term events. Here, we describe a new time-integrated method for the collection of aquatic methane that provides samples suitable for radiocarbon analysis, that are representative for periods of up to at least 16 days. We report the results of a suite of tests undertaken to verify the reliability of the method, and the 14C age of aquatic methane from field trials undertaken at sites within Scotland, UK. We believe that this new method provides researchers with a simple approach that is easily deployable and can be used to collect representative time-integrated samples of methane for radiocarbon analysis from a wide range of aquatic environments.
| Item Type: | Articles |
|---|---|
| Additional Information: | We are grateful to the UK Natural Environment Research Council (NERC) for funding NEIF (grant NE/S011587/1) and acknowledge additional funding from NERC grant NE/V009001/1 which supported the Scotland field trials. |
| Status: | Early Online Publication |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Garnett, Dr Mark |
| Authors: | Garnett, M.H., and Dean, J.F. |
| College/School: | College of Science and Engineering > Scottish Universities Environmental Research Centre |
| Journal Name: | Radiocarbon |
| Publisher: | Cambridge University Press |
| ISSN: | 0033-8222 |
| ISSN (Online): | 1945-5755 |
| Published Online: | 26 March 2024 |
| Copyright Holders: | Copyright: © The Author(s) 2024 |
| First Published: | First published in Radiocarbon 2024 |
| Publisher Policy: | Reproduced under a Creative Commons licence |
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