| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method of automatically measuring a fluorine concentration for readily measuring the fluorine concentration, in sample water where magnesium ions coexist at a high concentration, for example, of not less than 7,000 mg/L using a simple operation. <P>SOLUTION: The method of automatically measuring fluorine concentration includes the dilution process for diluting sample water by water as diluted sample water, when fluorine concentration in the sample water is measured by ion electrode method, the measurement process for measuring the fluoride ion concentration of the diluted sample water by an ion electrode, and the operation process for performing dilution ratio correction to a measurement value measured by the ion electrode. Thus, the fluorine concentration of sample water having a high magnesium ion concentration can be measured readily and automatically. <P>COPYRIGHT: (C)2011,JPO&INPIT |
