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 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.
Wahl
Edward
E
Tan
Sze
S
Koulikov
Sergei
S
Kharlamov
Boris
B
Rella
Christopher
C
Crosson
Eric
E
Biswell
Dave
D
Paldus
Barbara
B