Jet engine lubrication oils are a major source of ultrafine particles

Recent measurements have shown that Frankfurt International Airport is a major source of ultrafine particles and that these can disperse over long distances across the city. Researchers have now discovered that the ultrafine particles partly consist of synthetic jet oils. The research team has deduced that emissions from lubrication oils must be lowered in addition to those from kerosene in order to reduce the concentration of ultrafine particles and thus improve air quality.

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