Apparatus for measuring gaseous aldehyde
AssigneesNihon Bunko Kogyo Kabushiki Kaisha, Toyota Jidoshi Kabushiki Kaisha
InventorsToshiaki Tanaka, Kiyokatsu Hibi, Toshihiko Miyaji
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Abstract
An apparatus for detecting gaseous aldehydes is disclosed which contains a detachable aldehyde capturing system and an aldehyde detection system. The gaseous aldehyde is passed across a semipermeable membrane with a solvent on the other side of this semipermeable membrane to dissolve and absorb the aldehydes from the gas. This system permits the concentration and detection of low concentrations of gaseous aldehyde in the sample for efficient measurement. The aldehyde dehydrogenase to produce NADH in an amount corresponding to the amount of aldehyde in the solvent. The aldehyde detection system measures the amount of NADH produced.
Claims4
A continuous gaseous aldehyde measuring apparatus comprising:
- a gaseous aldehyde capturing mechanism comprising an aldehyde capturing solvent and a semipermeable membrane for continuously capturing aldehyde in a gaseous sample, wherein the gaseous sample is separated from the aldehyde capturing solvent by the semipermeable membrane,
- a gaseous supply means for delivering a gaseous sample to said gaseous aldehyde capturing mechanism,
- an aldehyde measuring mechanism for continuously measuring the amount of aldehyde in the aldehyde capturing solvent,
- means for adding a reagent to said aldehyde capturing solvent, wherein said reagent reacts with said aldehyde measuring mechanism,
- connector means between connecting portions of the gaseous aldehyde capturing mechanism and the aldehyde measuring mechanism so that the gaseous aldehyde capturing mechanism may be readily separated from the aldehyde measuring mechanism,
- a gaseous sample discharge for removing gaseous samples form said gaseous aldehyde capture mechanism,
- a pressure valve provided at said gaseous sample discharge to control the aldehyde capturing ratio of said gaseous aldehyde capture mechanism by varying gas pressure in said gaseous aldehyde capture mechanism,
- compensating gaseous supply means for delivering gas free of aldehyde to said gaseous aldehyde capturing mechanism, and,
- switching cock means in said gaseous supply means for alternatively supplying either gaseous sample or gas free of aldehyde to said gaseous aldehyde capturing mechanism.
Dependencies are inferred from the claim text.