… target value of 20 ng/m³ as annual mean that is valid since 1 January 2013. Air pollution Since 2007 the target value was exceeded 16 times at four stations close … was high above the target value. The average concentration in urban and rural areas is about 1 µg/m³. Higher values are measured close to industry (3 ng/m³ at the …

… target value of 5 ng/m³ as annual mean that is valid since 1 January 2013. Air pollution Since 2007 the target value was only exceeded at one station in the vicinity of a mining industry. The average concentration in urban and rural areas is about 0.1 µg/m³. Slightly higher values are measured close to industry (0.6 …

… as anti-knock additives in petrol. Car exhausts lead to an immense environmental pollution. Even today road traffic is an important emission source as lead is … in Germany, the concentrations are significantly below the limit value. In urban areas, average concentrations are at the moment approx. 6 ng/m³, in rural areas 2 …

… target value of 1 ng/m³ as annual mean that is valid since 1 January 2013. Air pollution Since 2007 the ambient air concentrations of Benzo(a)pyrene of most of the … is approx. 0.3 ng/m³, a bit lower than close to traffic or industry. In rural areas the pollution (approx. 0.2 ng/m³) is lower than in the cities. Even lower …

… target value of 6 ng/m³ as annual mean that is valid since 1 January 2013. Air pollution Since 2007 the target value was seldom exceeded, at stations in the … of industry only. The average pollution in urban is about 0.5 ng/m³ in urban areas slightly lower. A bit higher concentrations are measured close to industrial …