I need to measure ethylene gas in ppm

Eric Visser ericv at sci.kun.nl
Wed Jan 22 12:56:29 EST 1997


In article <19970107213700.QAA11384 at ladder01.news.aol.com>, janczek at aol.com
(JanCzek) says:
>
>If any body knows how to measure ethylene gas during fruit ripening,
>please e-mail to me the name and possibly address  of manufacturer of such
>sensor.
>Jan
>janczek at aol.com
>
>

Use a gas chromatograph with a Haysep QS-column, down to 0.1 ppm.
Accumulate the gas by placing your fruit in an airtight flask, then
take samples every hour or so. A better method is photoacoustic
spectroscopy, but this is a custom-build technique and not commercially
available.

Regards,

Eric





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