Ultra-sensitive ethylene post-harvest monitor based on cavity ring-down spectroscopy
| Autor: | Christopher Rella, Eric R. Crosson, Sergei Koulikov, Dave Biswell, Boris Kharlamov, Sze M. Tan, Barbara A. Paldus, Edward H. Wahl |
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| Rok vydání: | 2009 |
| Předmět: |
Detection limit
Ethylene Materials science business.industry Analytical chemistry Cold storage Atomic and Molecular Physics and Optics Cavity ring-down spectroscopy chemistry.chemical_compound Light intensity Optics Nuclear magnetic resonance Volume (thermodynamics) chemistry Gas chromatography business Spectroscopy |
| Zdroj: | Optics express. 14(4) |
| ISSN: | 1094-4087 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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