How brake dust could end up harming your lungs

Source: Josh Brown, Futurity, March 3, 2017

New research shows how brake and tire dust—a cloud of tiny metal particles—could wreak havoc on respiratory health. Metals from brakes and other automotive systems enter the air as fine particles, lingering over busy roadways. Although tailpipe emissions may fall as more zero-emission vehicles hit the streets, brake and tire dust, a major source of highway air pollution, shows no signs of abating. In the journal Environmental Science & Technology, researchers describe how vehicle-emitted metals such as copper, iron, and manganese interact with acidic sulfate-rich particles already in the air to produce a toxic aerosol….
Highly Acidic Ambient Particles, Soluble Metals, and Oxidative Potential: A Link between Sulfate and Aerosol Toxicity
Ting Fang, Hongyu Guo, Linghan Zeng, Vishal Verma, Athanasios Nenes, Rodney J. Weber, Environmental Science & Technology, Article ASAP, Web Publication Date January 31, 2017
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