FINE PARTICLE (NANOPARTICLE) EMISSIONS ON MINNESOTA HIGHWAYS
作者： David B Kittelson , Jason P Johnson , Winthrop J Watts
DOI:
关键词: Environmental science 、 Particulates 、 Atmospheric sciences 、 Pollutant 、 Particle 、 Combustion 、 Diesel fuel 、 Volume (thermodynamics) 、 Fuel efficiency 、 Environmental engineering 、 Dilution
摘要: This study examined the physical characteristics of combustion aerosols found on Minnesota highways. It emphasized characterization nanoparticles (less than 50 nm) with goal providing real-world data for development engine laboratory test methods. On-road particulate matter emissions ranged between 10[to 4th] to 6th] particles/cm[to 3rd] majority particles by number being less nm in diameter. High-speed traffic produced high nanoparticle concentrations and diesel further increased concentrations. At vehicular speeds, increase because higher load fuel consumption. Measurements made at speeds 20 mph showed lower but volume larger particles. 10-30 m from highway residential areas approached on-road similar size distributions nanoparticles. Lower were observed 500 700 highway. Fuel specific particle/mi. emission rates estimated collected two different days. The about an order magnitude greater published figures mass compared well values. However, colder temperatures, dilution sampling conditions instrumentation could explain authors' estimates.
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