A portable, field-based isotope analyzer for carbon dioxide and methane

便携式二氧化碳和甲烷现场同位素分析仪

• 批准号: RTI-2017-00337
• 负责人: Stix, John
• 金额: $ 8.84万
• 依托单位: McGill University
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments
• 财政年份: 2016
• 资助国家: 加拿大
• 起止时间: 2016-01-01 至 2017-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=616640
• 关键词: portable; field; based; isotope; analyzer

We propose to obtain a Picarro G2201-i mass analyzer for simultaneous carbon isotopic measurements of CO2 and CH4 in the field and in the lab. This instrument is lightweight and portable and is ideally suited to our diverse field applications in environments ranging from the high Arctic through northern peatlands to erupting volcanoes. Most significantly, it is the only such instrument available which can measure the isotopic composition of both CO2 and CH4 simultaneously or separately as required. Hence it is equivalent to lab-based instrumentation costing hundreds of thousands of dollars. Our applications with this instrument are varied and strongly field-based. They include characterizing the isotopic composition of CO2 from volcanoes and fault zones, understanding sources and sinks of CO2 and CH4 in northern peatlands, detecting changes in microbial methanogenesis and methanotrophy on diurnal, seasonal, and inter-annual timescales, determining the sources of soil CO2 and CH4 fluxes in the Canadian high Arctic, detecting in situ microbial activity in cryoenvironments at subzero temperatures from permafrost, and identifying thermogenic vs. biogenic gas in groundwaters from the St. Lawrence Lowlands in Québec. The principal hands-on users of the instrument will be our students, including undergraduates, graduates students, and postdoctoral fellows. They will become expert users and collect crucial data for their research projects. We will identify one senior student from each of our groups to be super-users, i.e., go-to people for training. We the PI’s will work closely with these people for applications development.

我们建议获得一台Picarro g221 -i质谱分析仪，用于在现场和实验室同时测量CO2和CH4的碳同位素。该仪器轻巧便携，非常适合我们在从北极高地区到北部泥炭地到火山爆发等环境中的各种现场应用。最重要的是，它是唯一可以根据需要同时或分别测量CO2和CH4同位素组成的仪器。因此，它相当于花费数十万美元的实验室仪器。