气候变化领域集成服务门户(CCPortal): Brief Communication: The reliability of gas extraction techniques for analysing CH4 and N2O compositions in gas trapped in permafrost ice wedges

CCPortal

DOI	10.5194/tc-14-1311-2020
	Brief Communication: The reliability of gas extraction techniques for analysing CH4 and N2O compositions in gas trapped in permafrost ice wedges
	Yang J.-B.; Ahn J.; Iwahana G.; Han S.; Kim K.; Fedorov A.
发表日期	2020
ISSN	19940416
起始页码	1311
结束页码	1324
卷号	14 期号:4
英文摘要	Methane (CH4) and nitrous oxide (N2O) compositions in ground ice may provide information on their production mechanisms in permafrost. However, existing gas extraction methods have not been well tested. We tested conventional wet and dry gas extraction methods using ice wedges from Alaska and Siberia, finding that both methods can extract gas from the easily extractable parts of the ice (e.g. gas bubbles) and yield similar results for CH4 and N2O mixing ratios. We also found insignificant effects of microbial activity during wet extraction. However, both techniques were unable to fully extract gas from the ground ice, presumably because gas molecules adsorbed onto or enclosed in soil aggregates are not easily extractable. Estimation of gas production in a subfreezing environment of permafrost should consider such incomplete gas extraction.. © 2020 Royal Society of Chemistry. All rights reserved.
英文关键词	detection method; gas production; methane; microbial activity; nitrous oxide; permafrost; Alaska; Siberia; United States
语种	英语
来源期刊	Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/202254
作者单位	School of Earth and Environmental Sciences, Seoul National University, Seoul, South Korea; International Arctic Research Center, University of Alaska, Fairbanks, United States; Melnikov Permafrost Institute, Russian Academy of Science, Yakutsk, Russian Federation; North-Eastern Federal University, Yakutsk, Russian Federation; Laboratoire des Sciences du Climat et de l'Environnement, LSCE/IPSL, CEA-CNRS-UVSQ_aor4 Université Paris-Saclay, Gif-sur-Yvette, France; Division of Earth and Planetary Materials Science, Department of Earth Science, Graduate School of Science_aor4 Tohoku University, Sendai, Japan
推荐引用方式 GB/T 7714	Yang J.-B.,Ahn J.,Iwahana G.,et al. Brief Communication: The reliability of gas extraction techniques for analysing CH4 and N2O compositions in gas trapped in permafrost ice wedges[J],2020,14(4).
APA	Yang J.-B.,Ahn J.,Iwahana G.,Han S.,Kim K.,&Fedorov A..(2020).Brief Communication: The reliability of gas extraction techniques for analysing CH4 and N2O compositions in gas trapped in permafrost ice wedges.Cryosphere,14(4).
MLA	Yang J.-B.,et al."Brief Communication: The reliability of gas extraction techniques for analysing CH4 and N2O compositions in gas trapped in permafrost ice wedges".Cryosphere 14.4(2020).