Procedure for fast simultaneous analysis of the greenhouse gases: methane, carbon dioxide, and nitrous oxide in air samples

A comprehensive procedure has been developed and is reported here for (i) sampling air above a soil surface and (ii) analyzing it for the three greenhouse gases: methane (CH4), carbon dioxide (CO2), and nitrous oxide (N2O). The automated gaschromatography procedure simultaneously analyzes for CH4, C...

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Bibliographic Details
Published in:Communications in soil science and plant analysis 2006-06, Vol.37 (11-12), p.1501-1510
Main Authors: Hedley, C.B, Saggar, S, Tate, K.R
Format: Article
Language:English
Subjects:
Agronomy. Soil science and plant productions
Biological and medical sciences
Carbon dioxide
detection limits
Fundamental and applied biological sciences. Psychology
gas chromatograph
gas chromatography
gas emissions
greenhouse gases
measurement
measuring devices
methane
new methods
nitrous oxide
precision
soil air
static chamber
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Summary:A comprehensive procedure has been developed and is reported here for (i) sampling air above a soil surface and (ii) analyzing it for the three greenhouse gases: methane (CH4), carbon dioxide (CO2), and nitrous oxide (N2O). The automated gaschromatography procedure simultaneously analyzes for CH4, CO2, and N2O and has a precision of 0.87, 2.17, and 0.74%, respectively. Method-detection limits are 0.04 ppm for CH4, 25.5 ppm for CO2, and 7.4 ppb for N2O. The procedure is used to monitor greenhouse gas exchanges at soil surfaces; its precision and automated ability to analyze large sample numbers produces quality data available for upscaling and modeling for inventory purposes; and it is used for developing a process-based understanding of the mechanisms controlling greenhouse gas fluxes at the soil surface, which can then be applied to develop mitigation strategies.
ISSN:0010-3624
1532-2416
DOI:10.1080/00103620600709928