Smartphone could help detect air pollution

People could soon be using their smartphones to combat a deadly form of air pollution, thanks to a new low-cost method of detecting nitrogen dioxide (NO2), a significant air pollutant, says a study.
“The revolutionary method we have developed is a great start to creating a handheld, low-cost and personalised NO2 sensor that can even be incorporated into smartphones,” said project leader Kourosh Kalantar-zadeh, professor at RMIT University in Melbourne, Australia.
Nitrogen dioxide inc