| 摘要 |
PROBLEM TO BE SOLVED: To accurately simply measure a concentration of a dissolved component in a sample water without using a large-scaled apparatus for keeping the temperature of the sample water constant when measuring the concentration of the dissolved component on the basis of transmissivity or absorbance whose measurement values vastly vary depending upon the temperature of the sample water.SOLUTION: The apparatus for measuring the concentration of a dissolved component in water stores information including the variation with time of transmissivity or absorbance when a plurality of standard sample waters having known concentrations of the dissolved component to be measured and different temperatures are irradiated with visible light, and measures the concentration of the dissolved component of the water by absorption photometry that determines the concentration of the dissolved component in unknown sample waters on the basis of the stored data. A calibration curve to be used and/or a timing of reading transmissivity or absorbance is changed on the basis of the temperature of the unknown sample water.SELECTED DRAWING: Figure 1 |
