Stable and Precise Carbon Monoxide Measurements with the Picarro G2302

Stable and Precise Carbon Monoxide Measurements with the Picarro G2302

A paper describing the performance of the carbon monoxide measurement of Picarro’s G2302 carbon monoxide, carbon dioxide, and water vapor analyzer. A precision of better than 2 ppb is routinely achieved on CO in five minutes of measurement time.

Abstract: 

In this white paper, we describe the performance of the carbon monoxide measurement of Picarro’s G2302 carbon monoxide, carbon dioxide, and water vapor analyzer. A precision of better than 2 ppb is routinely achieved on CO in five minutes of measurement time. We also present a careful study of the cross-interference of other common atmospheric constituents with the measurement of carbon monoxide. Through use of the appropriate methods, one can achieve excellent performance that meets and even exceeds the WMO inter-laboratory comparability standard of ± 2 ppb for trend detection of the marine boundary layer and ± 5 ppb for continental sites experiencing the influence of regional pollution (CO > 250 ppb). The G2302 enables high-quality measurements of both the well-mixed atmosphere as well as pollution plumes downwind of urban centers or biomass burning events.