Airpointer live (Kopie 2)

Airpointer live (Kopie 2)

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Airpointer Live

Airpointer

The data is collected with the Airpointer®, the world's first and only compact system for measuring air pollutants in accordance with European standards.

Actual measured values

Air quality indices

The individual pollutant measurements for the air pollutants nitrogen dioxide (NO₂), carbon monoxide (CO) and the suspended particulate matter fraction (PM₁₀) can be estimated with the aid of the short-term air quality index (LQI), which was derived within the framework of the Lower Saxony Air Hygiene Monitoring System (LÜN). The LQI especially considers the short-term health relevance of the individual air pollutants. Short-term air quality indices in the same or a similar way are also published by Baden-Württemberg, North Rhine-Westphalia, Saxony and Thuringia, for example. The index classes have been derived for each of the air pollutants, taking into account epidemiological and toxicological studies as well as the limit values according to the 39th BImSchV.

Class boundaries for the short-term air quality index

Klassengrenzen für den Kurzzeit-Luftqualitätsindex LQI

"Thirty-ninth Ordinance for the Implementation of the Federal Immission Control Act Ordinance on Air Quality Standards and Emission Ceilings (39th BImSchV) of 2 August 2010 (Federal Law Gazette I p. 1065)"

§ 3 Immission limit values and alert threshold for nitrogen dioxide (NO₂); critical value for nitrogen oxides (NOx)

  1. For the protection of human health, the immission limit value for nitrogen dioxide (NO₂), averaged over a full hour, is 200 µg/m³ with 18 permitted exceedances in a calendar year.

  2. For the protection of human health, the immission limit value for nitrogen dioxide (NO₂) averaged over a calendar year shall be 40 µg/m³.

  3. The alert threshold for nitrogen dioxide (NO₂) shall be 400 µg/m³ averaged over a full hour, measured over three consecutive hours at sampling points established by the competent authorities in accordance with Appendix 3, which are representative of air quality over at least 100 square kilometres or over the entire zone or agglomeration. The smallest of these areas shall be used. 

  4. To protect vegetation, the critical value for nitrogen oxides (NOx) averaged over a calendar year is 30 µg/m³.

 

§ 4 Immission limit values for particulate matter (PM₁₀)

  1. For the protection of human health, the daily averaged immission limit value for particulate matter PM₁₀ is 50 µg/m³ for 35 permitted exceedances in a calendar year.
  2. For the protection of human health, the immission limit value for particulate matter PM₁₀ averaged over a calendar year is 40 µg/m³.

 

§ 8 Immission limit value for carbon monoxide

For the protection of human health, the immission limit value for carbon monoxide to be determined as the highest eight-hour mean value per day shall be 10 mg/m³.

 

Source: Laws on the Internet