The TiCl4 is then reduced with molten magnesium at about 800 °C (1,500 °F) in an atmosphere of argon, and metallic titanium is produced as a spongy mass from which the excess of magnesium and magnesium chloride can be removed by volatilization at about 1,000 °C (1,800 °F).
This can be accomplished by two methods: fire polishing, a procedure that removes alkali ions by volatilization; or surface treatment with a mixture of sulfur dioxide and steam, which extracts alkali by leaching and converting to washable alkali sulfate.
The volatilization of interferences can be accomplished from a beaker on a hot plate.
Volatilization, adsorption, precipitation, and other chemical transformations, as well as biological immobilization and degradation, are the first line of defense against invasive pollutants.
The evaporation or volatilization of animal wastes releases NH3 into the atmosphere.
Performance criteria are cetane number (a measure of ease of ignition), ease of volatilization, and sulfur content.
Depletion of soil fertility may occur as a result of crop removal, erosion, leaching, and volatilization, or evaporation, of nutrients.
Many substances that normally do not easily vaporize can be chemically derivatized for successful volatilization separation by gas chromatography.
Nitrogen is also lost from plants and soil in terrestrial environments via other routes, including erosion, runoff, volatilization of ammonia into the atmosphere, and leaching from soils into lakes and streams.
"This volatilization thing is a situation we've never had to face before on a widespread basis," said Steve Smith, director of agriculture at the tomato canner Red Gold and chairman of the Save Our Crops Coalition.
In a joint statement issued with Dow on Tuesday, the coalition said its concerns had been assuaged after Dow agreed to "substantial measures to mitigate potential nontarget plant damage impacts from spray drift and volatilization".
