Background concentration

from Wikipedia, the free encyclopedia

The background concentration is the material concentration in the environmental media water, air and soil as well as in biological materials that are outside the area of ​​impact of emissions from plants or deposits. The terms reference value, background value or background exposure are often used synonymously. Knowledge of background concentrations helps to identify whether pollution of the environmental media has taken place or is taking place.

Use of terms

The background concentration is defined differently in detail: While the Römpp Lexikon Chemie speaks of the "unaffected environment", other publications and standards also use those anthropogenic concentrations that are entered from outside the unit under consideration, for example due to atmospheric precipitation.

When determining the fugitive emissions from industrial systems, the background concentration must be subtracted from the concentrations determined in the vicinity of these systems.

Individual evidence

  1. ^ A b c Franz Joseph Dreyhaupt (Ed.): VDI-Lexikon Umwelttechnik. VDI-Verlag Düsseldorf 1994, ISBN 3-18-400891-6 , p. 614.
  2. ↑ Jürgen Falbe, Manfred Regitz (Ed.): Römpp Chemie Lexikon . Thieme Verlag, Stuttgart 1995, ISBN 3-13-102759-2 , p. 1805.
  3. ↑ DIN ISO 4225: 1996-08 air quality ; General considerations; Terms (ISO 4225: 1994) (Air quality; General aspects; Vocabulary (ISO 4225: 1994)). Beuth Verlag, Berlin. P. 4.
  4. ↑ DIN EN ISO 11074: 2015-11 Soil quality ; Dictionary (ISO 11074: 2015); Trilingual version EN ISO 11074: 2015. Beuth Verlag, Berlin. P. 44.
  5. ↑ Dieter Gladtke, Patrick Marschall: Determination of the contributions of diffuse sources to local and regional pollution with immission measurements. In: Hazardous substances - cleanliness. Air . 74, No. 4, 2014, ISSN  0949-8036 , pp. 151-156.