| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a pH measuring method capable of measuring pH, even in an acidic region and also in an alkaline region. <P>SOLUTION: A boron doped diamond electrode is used as an acting electrode and the pH of a sample solution to be measured is measured by a chronopotentiometry method to enable a wide range of measurement. Especially, by using the boron doped diamond microelectrode as the acting electrode, the measurement of pH can be performed without being affected by the buffering capacity of a buffer solution and, by performing the measurement of pH in a saturated potassium chloride system, measurement can be performed without considering the effect of coexisting ions. <P>COPYRIGHT: (C)2011,JPO&INPIT |
