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We monitored two Seattle school buses to quantify the buses’ self pollution using the dual tracers (DT), lead vehicle (LV), and chemical mass balance (CMB) methods. Each bus drove along a residential route simulating stops, with windows closed or open. Particulate matter (PM) and its constituents were monitored in the bus and from a LV. We collected source samples from the tailpipe and crankcase emissions...
Concern about the potential health risks of particulate exhaust emissions from diesel-fueled vehicles has led regulatory agencies to foster the use of natural gas fueled heavy duty vehicles. However, the potential health risks of particulate exhaust emissions from natural gas fueled vehicles have not been well-studied. The present study investigated the mutagenicity of particulate exhaust emissions...
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