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umwelt-plakette.de en 2018-05-24

News on environmental zones and air pollution

Where do the Particulate Matters Come from?

The firm Dekra measured the air quality in Stuttgart and investigated the origin of the fine particles. It appears that pollution of particulate matters is much higher around train stations. But why? In addition to the combustion process of Diesel engines, abrasion on the tracks also emits a high level of particulate matters.