TOTAL NITROGEN CONCENTRATION MEASURING METHOD, AND ITS APPARATUS

PROBLEM TO BE SOLVED: To efficiently measure the nitrogen component contained in a sample water by making use of the oxidizing power of ozone and the oxidizing and reducing power of a photo-catalyst. SOLUTION: The sample water is brought into contact with ozone gas supplied from an ozone generator 1...

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Bibliographic Details
Main Author KUSUMI MIYOKO
Format Patent
LanguageEnglish
Published 19.07.2001
Edition7
Subjects
CHEMISTRY
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
METALLURGY
PHYSICS
TESTING
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Summary:PROBLEM TO BE SOLVED: To efficiently measure the nitrogen component contained in a sample water by making use of the oxidizing power of ozone and the oxidizing and reducing power of a photo-catalyst. SOLUTION: The sample water is brought into contact with ozone gas supplied from an ozone generator 10 and the photo-catalyst carried by an inner wall surface of a column 6 and an outer wall surface of a protective tube 7 under the light of a predetermined wavelength from a light source 8 stored in the protective tube 7 in the reaction column 6, and the nitrogen component contained in the liquid phase is converted into nitric nitrogen, and the total nitrogen concentration in the sample water is calculated from the concentration of the nitric nitrogen measured in a measurement unit 12.
Bibliography:Application Number: JP20000001219