| 释义 |
quinhydrone electrode
quinhydrone electrode[kwin′hī‚drōn i′lek‚trōd] (analytical chemistry) A platinum wire in a saturated solution of quinhydrone; used as a reversible electrode standard in pH determinations. quinhydrone electrode
quin·hy·drone e·lec·trodeone of several oxidation-reduction electrodes in which the ratio of the two forms (quinone:quinhydrone), determined by the hydrogen ion concentration, sets up a potential that can be measured and converted to a pH value (fails above pH 8). |