Picarro Cavity Ring-Down Spectroscopy Isotopic Analyzer for Carbon Isotopes in Methane and Carbon Dioxide

CRDS Analyzer for Isotopic Carbon in CO₂ and CH₄ - G2201-i
 

Simultaneous Measurement of Carbon Isotopes from Both Carbon Dioxide and Methane. Unique Carbon Cycle Solution.
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• Only field-deployable analyzer capable of simultaneous δ¹³C measurements for CO₂ and CH₄
• Less hassle – less calibration, less maintenance, no consumables
• Endures harsh environments – mountains, oceans, forests, and tundra
• Excellent precision at a fraction of the operating cost of IRMS
• Picarro analyzers are deployed by thousands of researchers, on all seven continents and in 52 countries

Respiration, fermentation. Oxidation, reduction. Source, sink. Carbon dioxide and methane are tightly intertwined in many biological and geological systems. If you know the behavior of only one of these species, you may only know half the story. With the new G2201-i, the isotopic carbon ratio in both CO₂ and CH₄ can be measured at the same time. This instrument combines the capabilities of Picarro’s two carbon isotope measurement instruments for CO₂ and CH₄, into a single instrument to gather the insights that stable isotope ratios offer. With this instrument, researchers can follow the carbon as it moves from source to sink.

The G2201-i operates in one of three modes: CO₂-only mode, CH₄-only mode, and combined CO₂/CH₄ mode. In CO₂-only mode, the analyzer meets the specifications of our G2101-_i isotopic carbon CO₂ analyzer. Likewise, in CH₄-only mode, the analyzer meets the specifications of our G2112-i isotopic carbon CH₄ analyzer. In the combined CO₂/CH₄ mode, the analyzer meets both specifications with up to 15 minutes sampling time to acquire all of the needed data. The measurement of CO₂ and CH₄ is interleaved every few seconds to produce a sampling rate that is much faster than the gas turn-over time in the cavity. Both species are monitored with a drift less than 2 ‰, peak-to-peak for 1 hour averages over 24 hours. The analyzer also makes precise measurements of CO₂, H₂O, and CH₄ concentration, which allows cross-influence of these species to be quantified and corrected. The water measurement correction eliminates need for gas drying. Peripherals such as the 16-Port Manifold extend the utility of the analyzer by allowing for multi-point sampling. The simultaneous measurement capability of the G2201-i is a technology unique to Picarro.