Green House Gas Analysis

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Greenhouse gases are those that are found in the atmosphere that induce the greenhouse effect, which is an absorbance and emission of infrared energy emitted by the Earth. As sunlight strikes the surface of the Earth, some of the infrared light is reflected into the atmosphere. These greenhouse gases absorb that infrared energy and reflect it toward the Earth. This gas chromatograph system enables the easy qualitative and quantitative analysis of three major greenhouse gases: methane(CH₄), carbon dioxide(CO₂), and nitrous oxide(N₂O).

Green House Gas Analyzer Lineup

Model Name	Conventional GHC system	NARO x Shimadzu System¹	Jetanizer-FID & ECD System
Features	・Conventional GHG analysis ・Packed column ＆ Two detectors	・High throughput analysis ・Packed column ＆ Three detectors	・High throughput analysis ・Two capillary columns & Two detectors
Selection Guide	・Small number of samples ・Good repeatability ・Good sensitivity of N₂O	・Large number of samples ・Good repeatability ・Good sensitivity of CH₄ & N₂O	・Large number of samples ・Wide dynamic range of CO₂ ・Good sensitivity of CO₂
GC model	GC-2014	GC-2014	GC-2030
Analysis time / GC cycle time	12/14 min (Isothermal)	7/9 min (Isothermal)	3/5 min (Isothermal)
Area repeatability	0.5%RSD	0.5%RSD	1%RSD
Detector	Methanizer FID ECD	FID TCD ECD	Jetanizer FID ECD
LOD	CH₄: 1ppm CO₂: 1ppm N₂O: 0.05ppm	CH₄: 0.1ppm CO₂: 100ppm N₂O: 0.05ppm	CH₄: 0.4ppm CO₂: 0.4ppm N₂O: 0.1ppm
Column	Packed column	Packed column	Capillary column

Notes: National Agriculture and Food Research Organization.
This system was developed in collaboration with Dr. Shigeto Sudo at NARO.
Caution: Available systems vary by region.

SCJ NARO System application: Analysis of greenhouse gases (CO2, CH4, N2O) emitted from rice paddies

Common Items

GC Type	Applicated GC/Analyzer
Sampling technique	Sampling bag or on-line sampling with gas sampling valve injection Vial sampling with syringe injection by autosampler
Carrier gas	N₂
Detector gas	FID; Air、H₂、N₂ TCD; N₂ ECD; Ar + 5 %CH₄

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