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US 2008/0166815 A1Published application
Ozone gas sensing element, detection apparatus, and measurement method
AssigneeNippon Telegraph and Telephone Corporation
InventorsYasuko Maruo, Shigeo Ogawa, Seizou Sakata, Tohru Tanaka
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Abstract
A sensing element in which a dye that changes in the light absorption characteristic of the visible region upon reaction with ozone gas is deposited in the pores of a porous material is prepared. A change in dye before and after exposing the sensing element to a measurement environment for a predetermined time is measured. The ozone gas amount in measurement target air is measured on the basis of the change in dye.
Claims20
An ozone gas measurement method comprising the steps of:
- preparing a sensing element in which a dye that changes in a light absorption characteristic of a visible region upon reaction with ozone gas is deposited in a pore of a porous material;
- exposing the sensing element to a measurement environment for a predetermined time;
- and
- measuring an ozone gas amount in a measurement target gas on the basis of a change in the dye before and after exposing the sensing element to the measurement environment for a predetermined time.
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Dependencies are inferred from the claim text.