Glossary A

The Environmental Glossary. Letter A +++ Popular Articles: 'Absorption', 'Abatement Debris', 'Acclimatization'

Deutsch: Aktivkohle / Español: Carbón activado / Português: Carvão ativado / Français: Charbon activé / Italiano: Carbone attivo

Activated charcoal (also known as activated carbon) is a form of carbon that has been processed to create a porous structure, giving it a large surface area that allows it to adsorb (trap) chemicals, pollutants, and toxins. In the environmental context, activated charcoal is widely used for water purification, air filtration, and pollution control due to its ability to adsorb a wide range of contaminants, including organic chemicals, heavy metals, and gases.

Deutsch: Aktivschlamm / Español: Lodo activado / Português: Lodo ativado / Français: Boue activée / Italiano: Fanghi attivi /

An Activated Sludge is Product that results when primary effluent is mixed with bacteria-loaden sludge and then agitated and aerated to promote biological treatment, speeding the breakdown of organic matter in raw sewage undergoing secondary waste treatment.

Deutsch: Aktivator / Español: Activador / Português: Ativador / Français: Activation / Italiano: Attivatore /

An activator is a substance that is used to increase the rate or efficiency of a chemical reaction. E.g. a chemical added to a Pesticide to increase its activity.

Deutsch: Wirkstoff / Español: Ingrediente Activo / Português: Ingrediente Ativo / Français: Ingrédient Actif / Italiano: Principio Attivo /

An Active Ingredient is in any pesticide product, the component that kills, or otherwise controls, target pests.

An ACTIVE INGREDIENT (A.I.) is the chemical or substance component of a pesticide product that can kill,repel, attract, mitigate or control a pest or that acts as a plant growth regulator, desiccant, or nitrogen stabilizer.

An Active radon/radon decay product measurement device is a radon or radon decay product measurement system which uses a sampling device, detector, and measurement system integrated as a complete unit or as separate, but portable, components.

The active solar heating system uses solar collectors to capture energy from the sun and store it as Heat for space heating and water heating.

An Activity Pattern Data is in an inhalation exposure assessment, activity pattern data depict both the actual physical activity (including an associated inhalation exertion level), the physical location, and the time of the day the activity takes place (e.g., sleeping at home at midnight, jogging in the park at 8 a.m., or driving in a car at 6 p.m.).

Deutsch: Umweltaktivitätenpläne / Español: Planes de Actividades Ambientales / Português: Planos de Atividades Ambientais / Français: Plans d'activités environnementales / Italiano: Piani di Attività Ambientali /

Activity Plans are Written procedures in a school's asbestos-management plan that detail the steps a Local Education Agency (LEA) will follow in performing the initial and additional

Deutsch: Akut / Español: Agudo / Português: Agudo / Français: Aigu / Italiano: Acuto /

An Acute is used to describe disease where symptoms are readily evident. Treatment is generally required.