Chemiluminescence type ammonia analyzing instrument

Abstract

Abstract PURPOSE:To permit measurement of ammonia of low concn. in a measurement range of a small full scale by supplying gaseous O3 of the concn. lower than the concn. of gaseous NO to a system up to a detector and oxidizing the gaseous NO in the gas by as much as the amt. of the gaseous O3 to convert said gas to gaseous NO2. CONSTITUTION:A converter 3 provided to permit reduction contact catalysis is disposed to the system 1 and the top ends of the probe part 4 of the respective systems 1, 2 are disposed to face a flue 5. A scrubber part 6, a pretreatment part 7, a flow rate control part 8 and chemiluminescence chambers 9 which are the detecting part are connected to the inflow line for the gas to be measured of the respective systems. Ozone supply lines 11 for supplying the gaseous O3 from ozone generating parts 10 are piped to the respective chambers 9. The measurement of the concn. of the gaseous NO is executed by chemiluminescence analysis and the concn. is calculated by an arithmetic part 12 and is displayed on a display part 13. The respective ozone generating parts 10 of the respective systems and the inflow line for the gas to be measured are connected by ozone introducing paths 14 so that the gaseous O3 of the concn. lower than the concn. of the gaseous NO in the gas to be measured is supplied.

Inventors

• 👤 Wataru Tsuruta
• 👤 鶴田　捗

Bibliographic Details