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GASEOUS AIR POLLUTION [3 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2016-05-17

English

Subject field(s)
  • Anti-pollution Measures
  • Air Pollution
CONT

The emphasis of this article is air pollution control technology as it is designed to remove particulate and gaseous pollutants from the emissions of stationary sources, including power plants and industrial facilities.

French

Domaine(s)
  • Mesures antipollution
  • Pollution de l'air
Key term(s)
  • technologie anti-émission

Spanish

Save record 1

Record 2 2012-02-22

English

Subject field(s)
  • Atmospheric Physics
  • Air Pollution
DEF

Air (relatively) devoid of solid, liquid or gaseous pollutant materials.

CONT

The composition of air is variable with respect to several of its components(e. g., CH4, CO2, H2O) so "pure" air has no precise meaning; it is commonly considered to be air which is free of dust, [hydrometeors, ] aerosols, and reactive gaseous contaminants of anthropogenic origin [such as industrial effluents].... Relative clean air which is free of most reactive anthropogenic pollution(NO, NO2, SO2, non-methane hydrocarbons, etc.), often used as a reference sample in the calibration and operation of instruments, is purchased under the designation of zero air.

CONT

[The] so-called "pure" air is a mixture of gases containing about 78 percent nitrogen; 21 percent oxygen; less than 1 percent of carbon dioxide, argon, and other inert gases; and varying amounts of water vapor.

OBS

air: The mixture of gases comprising the earth’s atmosphere.

French

Domaine(s)
  • Physique de l'atmosphère
  • Pollution de l'air
DEF

Air (relativement) exempt de matières polluantes solides, liquides ou gazeuses.

CONT

L'air est un mélange de gaz constituant l'atmosphère qui entoure la terre. L'air pur est composé de 21 % d'oxygène et de 78 % d'azote par volume, en plus de quantités infimes d'autres gaz comme l'argon, le gaz carbonique et la vapeur d'eau.

Spanish

Campo(s) temático(s)
  • Física de la atmósfera
  • Contaminación del aire
DEF

Aire (relativamente) exento de materiales contaminantes sólidos, líquidos o gaseosos.

Save record 2

Record 3 1982-03-22

English

Subject field(s)
  • Microbiology and Parasitology
CONT

The pollution in the effluent and the oxygen in the air spread through the biological film to the assimilating micro-organism, while conversely the by-products and the carbon dioxide are eliminated in the liquid and gaseous fluids.

French

Domaine(s)
  • Microbiologie et parasitologie
CONT

La pollution contenue dans l'eau et l'oxygène de l'air diffusent à travers le film biologique jusqu'aux microorganismes assimilateurs tandis qu'inversement, les sous-produits et le gaz carbonique éliminent dans les fluides liquides et gazeux.

Spanish

Save record 3

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