Patent ID: 6734021
Filing Date: 2004-05-11
Classification: G01N,Y10T

Abstract:
A measuring method for the organic carbon content characterized in causing a test liquid to flow into the oxidizing process vessel and stopping the irradiation after the UV light has irradiated this test liquid for a predetermined time which time is insufficient to completely oxidize the organic carbon, measuring the base conductivity prior to commencement of the lighting of said UV light and the maximum conductivity after irradiation has stopped in a conductivity detecting means provided in proximity to an outlet of said oxidizing vessel, and finding the organic carbon content of the test liquid from the difference between this base conductivity and maximum conductivity, wherein the rate of flow F of the test liquid that flows through said oxidizing vessel, the volume V of the part of the oxidizing vessel irradiated by the UV light upstream from said conductivity detecting means, and the irradiation time of T of the UV light have the relationship F&lE;V/T.