Emission 01
Emission 01 : (a) The release or giving out of a gas, light or heat. An automobile releases uncombusted or partially oxidized hydrocarbon emissions from its tailpipe when the engine is running. Atoms in an excited state often emit light in order to reach a lower energy state. These emissions can be used to determine the presence of the atoms in a sample. [SHSU, 2000: Atmospheric Chemistry Glossary, attributed to [Journal of Environmental Economics and Management 25: 177-195 (1993) and Science 26: 1255-1257 (1994)]; (b) Like effluent but used in regard to air pollution. [SRA, 1999: Glossary of Risk Analysis Terms] [USDOE, 2000: RAIS Glossary]; (c) Pollution discharged into the atmosphere from smokestacks, other vents, and surface areas of commercial or industrial facilities; from residential chimneys; and from motor vehicle, locomotive, or aircraft exhausts. [USEPA, 1997a: EPA Terms of Environment]
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