Oxidation-Reduction Potential

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oxidation-reduction potential

[‚äk·sə′dā·shən ri′dək·shən pə‚ten·chəl]
(physical chemistry)
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Oxidation-Reduction Potential


the electrode potential of an electrolytic system at equilibrium. At constant temperature, the oxidation-reduction potential is only dependent on the composition of the medium and is equal to the potential difference between a neutral electrode and a solution containing interconvertible, oxidized and reduced forms of a compound.

The simplest illustration of oxidation-reduction potential involves ferric oxide and ferrous oxide ions: Fe3+ ions capture electrons from the metal and convert into Fe2+ ions, which, in turn, are able to effect the reverse reaction; the potential at which the forward and reverse reactions kinetically balance each other is the oxidation-reduction potential. An increase in the oxidizing strength of the medium is accompanied by an increase in the oxidation-reduction potential. The values that are derived for oxidation-reduction potentials are used to solve various problems in electrochemistry, biochemistry, and analytical chemistry. These values, like the values for standard potential that are obtained from a hydrogen electrode, proceed from an arbitrary zero point.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
Lytle, "Measuring the oxidation-reduction potential of important oxidants in drinking water," Journal of the American Water Works Association, vol.
1 October 2013 - Luoxis Diagnostics, part of US Ampio Pharmaceuticals Inc (NASDAQ:AMPE), unveiled today clinical study data showing statistically significant correlations between oxidation-reduction potential (ORP) and the severity of injury among patients with isolated traumatic brain injury (iTBI).
Patterns in pH, Oxidation-Reduction Potential, Total Dissolved Solids, Specific Conductivity, and Salinity.--Diel variations in pH levels were observed in all three lakes (Figs.
Often desirable are determinations of the hydrogen ion concentration (pH); oxidation-reduction potential (ORP); dissolved oxygen (DO) and oxygen uptake rate; grease, phosphates, and nitrogen.
21 June 2013 - Luoxis Diagnostics, part of US Ampio Pharmaceuticals Inc (NASDAQ:AMPE), has unveiled positive results from the first study of its oxidation-reduction potential (ORP) diagnostic system, measuring markers of oxidative stress and antioxidant reserves.
An electrolyzed strong acidic solution, which has a high oxidation-reduction potential (ORP) in combination with hypochlorous acid, is bactericidal.
I am a little confused about the article "All Fouled Up." It implies that trichlororisocynauric acid (trichlor) has little effect on oxidation-reduction potential (ORP) on a pool using trichlor for sanitation, but rather, that the cause for low oxidation rates in these types of pools is a dirty ORP probe.
Water quality monitors that use electrolytic sensors for chemical characteristics such as conductivity, pH, oxidation-reduction potential, dissolved oxygen, and chlorides - as well as sensors for physical characteristics such as turbidity, color, temperature, and solar radiation - are furnished by The Foxboro Co.; Gam Rad West, Inc.; Leeds & Northrup Unit of General Signal; Rosemount Analytical Inc.
Changes in the oxidation-reduction potential (ORP), which are caused by irradiation, play an important role in the formation of COMb.
Measurement of oxidation-reduction potential (commonly abbreviated to ORP or redox) affords an indication of the success of oxidation processes in sewage and industrial waste treatment units.
The ability of the acidic water to kill harmful bacteria is due to its high chlorine content, a very low pH, which slows most enzymatic activity, and its strong oxidation-reduction potential (ORP).

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