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Peer Reviewed Literature
Authors

Edward H. Wahl, Sze M. Tan, Sergei Koulikov, Boris Kharlamov, Christopher R. Rella, Eric R. Crosson, Dave Biswell, and Barbara A. Paldus

Presented at

Optics Express 14, 4, pp. 1673-1684 February 20, 2006 Optics Express

Abstract

We describe the application of cavity ring-down spectroscopy (CRDS) to the detection of trace levels of ethylene in ambient air in a cold storage room of a fruit packing facility over a several month period. We compare these results with those obtained using gas chromatography (GC), the current gold standard for trace ethylene measurements in post-harvest applications. The CRDS instrument provided real-time feedback to the facility, to optimize the types of fruit stored together, and the amount of room ventilation needed to maintain sub-10 ppb ethylene levels for kiwi fruit storage. Our CRDS instrument achieved a detection limit of two parts-per-billion volume (ppbv) in 4.4 minutes of measurement time.