On-Road Chemical Transformation as an Important Mechanism of NO₂ Formation.

ABSTRACT: Nitrogen dioxide (NO₂) not only is linked to adverse effects on the respiratory system but also contributes to the formation of ground-level ozone (O₃) and fine particulate matter (PM_2.5). Our curbside monitoring data analysis in Detroit, MI, and Atlanta, GA, strongly suggests that a large fraction of NO₂ is produced during the "tailpipe-to-road" stage. To substantiate this finding, we designed and carried out a field campaign to measure the same exhaust plumes at the tailpipe-level by a portable emissions measurement system (PEMS) and at the on-road level by an electric vehicle-based mobile platform. Furthermore, we employed a turbulent reacting flow model, CTAG, to simulate the on-road chemistry behind a single vehicle. We found that a three-re

SUBMITTER: Yang B 

PROVIDER: S-EPMC6463298 | biostudies-literature | 2018 Apr

REPOSITORIES: biostudies-literature