Ultra-sensitive ethylene post-harvest monitor based on cavity ring-down spectroscopy

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...

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Bibliographic Details
Published inOptics express Vol. 14; no. 4; pp. 1673 - 1684
Main Authors Wahl, Edward, Tan, Sze, Koulikov, Sergei, Kharlamov, Boris, Rella, Christopher, Crosson, Eric, Biswell, Dave, Paldus, Barbara
Format Journal Article
LanguageEnglish
Published United States 20.02.2006
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Summary: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.
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ISSN:1094-4087
DOI:10.1364/OE.14.001673