- Industry: Government
- Number of terms: 3992
- Number of blossaries: 2
- Company Profile:
Any particles in the atmosphere that obstruct the range of visibility.
Industry:Pollution control
An ether compound added to gasoline to provide oxygen and enhance complete combustion. MTBE is being phased out of California's gasoline. For more information, please see our website that discusses oxygenates.
Industry:Pollution control
An estimate, derived by the U. S. EPA with an uncertainty spanning perhaps an order of magnitude) of a daily exposure to the human population, (including sensitive subgroups) that is likely to be without appreciable risk of deleterious effects during a lifetime of exposure. The RfC is derived from a no or lowest observed adverse effect level from human or animal exposures, to which uncertainty or "safety" factors are applied.
Industry:Pollution control
An estimate delivered by the U. S. EPA (with uncertainty spanning perhaps an order of magnitude) of the daily exposure to the human population, (including sensitive subpopulations) that is likely to be without deleterious effects during a lifetime. The RfD is reported in units of mg of substance/kg body weight / day for oral exposures.
Industry:Pollution control
An engine that uses a compressor to draw air into the engine and compress it. Fuel is added to the air and combusted in a combustor. Hot combustion gases exiting the engine turn a turbine which also turns the compressor. The engine's power output can be delivered from the compressor or turbine side of the engine.
Industry:Pollution control
An engine in which both the heat energy and the ensuing mechanical energy are produced inside the engine. Includes gas turbines, spark ignition gas, and compression ignition diesel engines.
Industry:Pollution control
An engine in which air and fuel are introduced into cylinders, compressed by pistons and ignited by a spark plug or by compression. Combustion in the cylinders pushes the pistons sequentially, transferring energy to the crankshaft, causing it to rotate.
Industry:Pollution control
An emissions control device that removes VOCs from a gas stream as a result of the gas attaching (adsorbing) onto a solid matrix such as activated carbon.
Industry:Pollution control
An air sampling device that allows estimation of air quality components over a period of time through laboratory analysis of the sampler's medium. (See also Continuous Sampling Device. )
Industry:Pollution control
An electrochemical cell which captures the electrical energy of a chemical reaction between fuels such as liquid hydrogen and liquid oxygen and converts it directly and continuously into the energy of a direct electrical current. For more information, please go to ARB's fuel cell portal page.
Industry:Pollution control
