Measuring N2O and Other Trace Gases in Soil and Air Using LI-COR Trace Gas Analyzers
From soil flux measurements of N2O and CH4, to point-source detection systems, LI-COR Trace Gas Analyzers are the new standard for portable, precise gas measurements.Watch the recording
The LI-7820 N2O/H2O Trace Gas Analyzer provides consistent, highly precise nitrous oxide measurements. Equipped to traverse the most extreme and remote locations, the analyzer’s compact, portable design coupled with low power requirements allows for easy deployment and data collection.
The LI-7820 is ideal for chamber-based measurements in soil gas flux research. The LI-7820 conveniently integrates into both survey and long-term systems, and data can be easily post-processed with SoilFluxPro™ Software. For CH4 and CO2 measurements, pair it with the LI-7810 CH4/CO2/H2O Trace Gas Analyzer. For CO2 measurements alone, pair it with the LI-870 CO2/H2O Analyzer.
For more information on LI-7820 integration with soil gas flux measurements, see the Soil Gas Flux Solutions page.
When measuring N2O fluxes from soil, fluxes are often minimal and close to zero. There is still natural variation that occurs, which is important to quantify. In order to detect these small, natural variations in soil N2O flux, it is then essential to have an analyzer with high precision that can resolve small fluxes in a timely manner. The precision of the LI-7820 allows you to measure these small variations and resolve natural fluxes of N2O, in addition to being able to measure large fluxes that can occur, for example after a fertilizer treatment.
The example given is from a LI-COR long-term soil flux system. The LI-7820 was used to measure natural fluxes that occur, while also seeing larger fluxes emitted during spring thaw events in Lincoln, Nebraska. Figure 2 provides an example flux calculated in 2 minutes from a closed-chamber measurement.
Specifications subject to change without notice.
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