On-Road Chemical Transformation as an Important Mechanism of NO2 Formation
作者： Bo Yang , K. Max Zhang , W. David Xu , Shaojun Zhang , Stuart Batterman
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摘要: Nitrogen dioxide (NO2) not only is linked to adverse effects on the respiratory system but also contributes formation of ground-level ozone (O3) and fine particulate matter (PM2.5). Our curbside monitoring data analysis in Detroit, MI, Atlanta, GA, strongly suggests that a large fraction NO2 produced during “tailpipe-to-road” stage. To substantiate this finding, we designed carried out field campaign measure same exhaust plumes at tailpipe-level by portable emissions measurement (PEMS) on-road level an electric vehicle-based mobile platform. Furthermore, employed turbulent reacting flow model, CTAG, simulate chemistry behind single vehicle. We found three-reaction (NO–NO2–O3) can largely capture rapid NO conversion (with time scale ≈ seconds) observed studies. distinguish contributions from different mechanisms near-road NO2, clearly defined set NO2/NOx ratios diffe...
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