PM2.5 in the graphic, which was incorrectly stated as mg per m3 of air. Urban environments that are already polluted can interact with polluting particles to create more intense smog and haze, according to scientists in China and the US. The researchers analysed the morphology of black carbon, a pollutant that contributes to haze, global warming and the ultra fine particulates, PM2.5, which can cause human respiratory problems. The morphology modification of black carbon occurred in four to six hours in Beijing, four times more quickly than in Houston, which has cleaner air. “Black carbon is one of the most important air pollutants for urban environments,” said lead author Dr Xiaojun Wang, from Nanjing University of Science and Technology.
Urban environments that are already polluted can interact with polluting particles to create more intense smog and haze, according to scientists in China and the US. The researchers analysed the morphology of black carbon, a pollutant that contributes to haze, global warming and the ultra fine particulates, PM2.5, which can cause human respiratory problems. The morphology modification of black carbon occurred in four to six hours in Beijing, four times more quickly than in Houston, which has cleaner air. “Black carbon is one of the most important air pollutants for urban environments,” said lead author Dr Xiaojun Wang, from Nanjing University of Science and Technology.