2013 ASHS Annual Conference

CID Bio-Science, Inc. reports on experimental studies on a commercial ethylene sensor to improve its operational performance. The largest improvement achieved was in sensor selectivity in the working environment that interferes with the sensing of ethylene. Selectivity of the sensor was increased by passing the analyte air stream through a trap for interfering gases. By applying the basic chemistry principle of “like dissolves like”  polar molecules such as ethanol are removed by the trap. Ethylene, a nonpolar hydrocarbon, passes through the trap with relative ease. The gas trap was regenerated by reversing the concentration gradient between the trap and the analyte air stream. The poster and instrument will be on hand for your review.