photochemical oxidant

photochemical oxidant

[¦fōd·ō′kem·ə·kəl ′äk·sə·dənt]
(chemistry)
Any of the chemicals which enter into oxidation reactions in the presence of light or other radiant energy.
References in periodicals archive ?
The vehicle scored well for 'Global Warming Potential' and 'Photochemical Oxidant Creation Potential'
It also results in the release of 81% less photochemical oxidant forming chemicals.
TOKYO - A record number of 28 of Japan's 47 prefectures issued photochemical oxidant smog warnings in 2007, including Niigata and Oita prefectures, which issued warnings for the first time, the Environment Ministry said in a report Tuesday.
Ozone, a photochemical oxidant insmog, is considered by the government's National Crop Loss Assessment Network to account for about 90 percent of U.S.
Intercontinental transport of aerosols and photochemical oxidants from Asia and its consequences.
Nevertheless, the same authors agree that such measurements may only be proposed after improving the current state-of-the-art in the main parameters involved in the formation of photochemical oxidants. This is particularly important for Spain where the experimental evidence of oxidants and precursors is very limited (MILLAN et al., 1991; SANCHEZ; SANZ, 1994; ZURITA; CASTRO, 1983).
The air that man breaths is polluted by industrial and automobile emissions bringing them into the atmosphere suspended articulate matter (SPM), oxides of sulphur and nitrogen, carbon monoxide, photochemical oxidants and hydrocarbons.
[7] VOCs (volatile organic compounds): As a source of suspended particulate matter and photochemical oxidants, major emitters of VOCs are regulated under the Air Pollution Prevention Law.
AND KRUPA S.(1999) : "Photochemical oxidants: state of the science".
Many solvents undergo chemical reactions in the atmosphere, leading to a number of indirect effects, including the formation of photochemical oxidants and ozone.
While air pollution from coal no longer plagues urban areas, that from diesel vehicles and other aspects of modern life, including precursor chemicals, which give rise to photochemical oxidants, exact a major avoidable price on our health.
One of EPA's primary uses of its Cray T3E system will be to model harmful atmospheric pollutants, such as carbon dioxide, sulfur dioxide, nitrogen oxide, photochemical oxidants and particulate matter.

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