By mmillikin A new study by an international team led by researchers from the Paul Scherrer Institute (PSI) in Switzerland has found that modern diesel passenger cars equipped with diesel particulate filters (DPFs) emit fewer carbonaceous particulates than gasoline-powered vehicles. The open-access study is published in the journal Scientific Reports.
Carbonaceous PM is made up of black carbon, primary organic aerosol (POA) and—especially—secondary organic aerosol (SOA), which is known to contain harmful reactive oxygen species and can damage lung tissue. The researchers first quantified carbonaceous PM from Euro 5 gasoline and DPF-equipped diesel cars, then constrained the measurements using source apportionment investigations
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