| 释义 |
voltammetry Physical Chem.|vɒlt-, vəʊlˈtæmətrɪ|
[f. volt n. + ampere + -metry.]
An electroanalytical technique for establishing the identities and concentrations of various ions in solution (see quot. 1978). Hence voltaˈmmetric a., by means of or employing voltammetry; voltaˈmmetrically adv.
1940Kolthoff & Laitinen in Science 16 Aug. 152/1 (heading) The voltammetric determination of oxygen. Ibid., By the term ‘voltammetry’ we mean the determination and interpretation of current-voltage curves obtained in electrolysis experiments using a suitable microelectrode as an indicator electrode. Ibid. 153/1 Oxygen can also be determined voltammetrically by using a platinum wire microelectrode. 1976Nature 8 July 146/1 An efflux of 5-hydroxyindole acetic acid..into the CSF was observed by the voltammetric monitoring. 1978Kirk–Othmer Encycl. Chem. Technol. (ed. 3) II. 618 Voltammetry is the general procedure of studying the current-voltage behavior of a microelectrode in a system which also contains a large nonpolarizable reference electrode and a large excess of an electrolyte... Polarography is a special case of voltammetry in which the small, polarizable electrode is a capillary tube from which small mercury droplets emerge at regular intervals... The plot of current vs voltage..provides qualitative and quantitative information about the solution composition. 1983Jrnl. Chem. Soc. Dalton Trans. 991 (heading) Electron-transfer processes and electrodeposition involving the iron hexacyanoferrates studied voltammetrically. |