| 摘要 |
PROBLEM TO BE SOLVED: To provide a water-quality measurement method for precisely measuring the concentration of a desired constituent to be measured without being affected by a coexisting substance as much as possible even if the composition of the coexisting substance is changed or the concentration is changed. SOLUTION: In the water quality measurement method, light L in a specified wavelength band is applied to sample water S, a concentration estimation expression is determined on the basis of an absorbance measurement value determined at that time, and the concentration of a constituent to be measured contained in the sample water S is determined by using the concentration estimation expression. In the water-quality measurement method, variations in the specific absorbance used when determining the concentration estimation expression are corrected. COPYRIGHT: (C)2005,JPO&NCIPI
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