Glossary
Air Pollution Terms
Additives — Chemicals added to fuel to improveand maintain fuel quality.Air Toxics — Toxic air pollutants defined underthe Clean Air Act.Alcohols — Organic compounds that are distinguishedfrom hydrocarbons by the inclusion of a hydroxyl group. The twosimplest alcohols are methanol and ethanol.Ambient — Any confined portion of the atmosphere;open air; outside surrounding air.Aromatics — Hydrocarbons based on the ringed six-carbonbenzene series or related organic groups. Benzene, toluene, ethylbenzene,and xylene are the principal aromatics, commonly referred to asthe BTEX group. They represent one of the heaviest fractions ingasoline.Benzene — Benzene is a six-carbon aromatic thatis a common gasoline component. Benzene has…
