- 업종: Government
- Number of terms: 3992
- Number of blossaries: 2
- Company Profile:
A type of hydrocarbon, such as benzene or toluene. Some aromatics are toxic.
Industry:Pollution control
A type of air emission monitoring system installed to operate continuously inside of a smokestack or other emission source.
Industry:Pollution control
A three-dimensional photochemical grid model designed to calculate the concentrations of both inert and chemically reactive pollutants in the atmosphere. It simulates the physical and chemical processes that affect pollution concentrations.
Industry:Pollution control
A term used to describe the "best" measures (according to U. S. EPA guidance) for controlling small or dispersed sources of particulate matter and other emissions from sources such as roadway dust, woodstoves, and open burning.
Industry:Pollution control
A term used in the context of air quality management to describe a hydrocarbon's ability to react (participate in photochemical reactions) to form ozone in the atmosphere. Different hydrocarbons react at different rates. The more reactive a hydrocarbon, the greater potential it has to form ozone.
Industry:Pollution control
A term used in risk assessment. It is the concentration at or below which no adverse health effects are anticipated for a specified exposure period.
Industry:Pollution control
A term used in risk assessment. An exposure level at which there are no statistically or biologically significant increases in the frequency or severity of adverse effects between an exposed population and a comparable non-exposed population.
Industry:Pollution control
A term referring to chemical reactions brought about by the light energy of the sun. The reaction of nitrogen oxides with hydrocarbons in the presence of sunlight to form ozone is an example of a photochemical reaction.
Industry:Pollution control
A substance that can increase or decrease the rate of a chemical reaction between the other chemical species without being consumed in the process.
Industry:Pollution control
A substance that brings about oxidation in other substances. Oxidizing agents (oxidants) contain atoms that have suffered electron loss. In oxidizing other substances, these atoms gain electrons. Ozone, which is a primary component of smog, is an example of an oxidant.
Industry:Pollution control
