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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 61, Number 4
JKCSEZ 61(4)
August 20, 2017 

Photoacoustic Effect of Ethene: Sound Generation due to Plant Hormone Gases
David W Ide, Han Jung Park*
Photoacoustic, Ethene, Trace detect, CO2 Laser, Resonance frequency
Ethene (C2H4), which is produced in plants as they mature, was used to study its photoacoustic properties using photoacoustic spectroscopy. Detection of trace amounts, with N2 gas, of C2H4 gas was also applied. The gas was tested in various conditions-temperature, concentration of the gas, gas cell length, and power of the laser- to determine their effect on the photoacoustic signal, the ideal conditions to detect trace gas amounts, and concentration of C2H4 produced by an avocado and a banana. A detection limit of 10 ppm was determined for pure C2H4. A detection of 5% and 13% (by volume) concentration of C2H4 was produced for a ripening avocado and banana, respectively, in closed space.
139 - 142
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