| 摘要 |
PROBLEM TO BE SOLVED: To reduce the effect exerted on measurement by a suspended substance formed by the oxidative decomposition of sample water. SOLUTION: Since sample water becomes a bubbling state by the supply of air due to an air supply mechanism 14 in an oxidation reaction process, the formed suspended substance is dispensed in the sample water. A sedimentation process for standing by until the suspended substance is sedimented on the bottom part of the sample water after the completion of the sedimentation process is provided and the irradiation with ultraviolet rays is also stopped during the sedimentation process. Thereafter, the supernatant liquid of the oxidation reaction solution of a reaction container is sampled and a reagent is added to the supernatant liquid to measure the absorbancy in a measuring part 16. COPYRIGHT: (C)2006,JPO&NCIPI
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