Publication Date:
2018
Description:
〈b〉Isotopic fractionation corrections for the radiocarbon composition of
CO〈sub〉2〈/sub〉 in the soil gas environment must include diffusion and mixing〈/b〉〈br〉
Jocelyn E. Egan, David R. Bowling, and David A. Risk〈br〉
Biogeosciences Discuss., https//doi.org/10.5194/bg-2018-451,2018〈br〉
〈b〉Manuscript under review for BG〈/b〉 (discussion: open, 1 comment)〈br〉
Traditionally a mass-dependent correction is made when measuring the radiocarbon composition in organic samples. This correction has not been evaluated for the soil gas environment where gas transport processes are important. Here, we show using theory, analytical models and field data that this traditional correction is not appropriate for estimating the radiocarbon composition of soil biological production. We also propose a new solution that accounts for soil gas transport processes.
Print ISSN:
1810-6277
Electronic ISSN:
1810-6285
Topics:
Biology
,
Geosciences
