Characterizations of hazardous air pollutants emitted from motor vehicles
Journal
Toxicological and Environmental Chemistry
Journal Volume
56
Journal Issue
1-4
Pages
85-104
Date Issued
1996
Author(s)
Abstract
Emissions from motor vehicles have been one of the primary pollution sources in the metropolitan areas throughout Taiwan for a long time. The government has devoted a great deal of effort to improving this situation. This study was conducted to make a survey of air inside tunnels to understand the impact from motor vehicles in real roadway conditions in April and May 1993 and the period from January to February 1994. Suspended particulate matter with aerodynamic diameters less than 10 um were collected on Teflon filters, which were installed in a dichotomous sampler, and were analyzed for chemical elemental components by using XRF, gaseous and particulate polycyclic aromatic hydrocarbons (PAHs) were measured using a PS1/ PUF sampler equipped with a glass fiber filter and a polyurethane foam plug (PUF) installed behind the filter. In addition, volatile organic compounds (VOCs) were trapped by the carbotrap adsorbent then identified by thermal desorption/GC (FID) technology. Other relevant environmental information and data regarding traffic volume were also gathered and/or counted. This investigation presents the characterizations of air pollutants measured in tunnel air and provide the information for the source identification on air pollution source in the air.
Subjects
Br/Pb ratio; BTEX ratio; Characteristic ratio; Gaseous to particulate ratio; Piston effect of traffic
SDGs
Other Subjects
Characteristic ratio; Gaseous to particulate ratio; Piston effect of traffic; Adsorbents; Air pollution control; Air quality; Aromatic hydrocarbons; Characterization; Environmental impact; Gas emissions; Impurities; Particles (particulate matter); Temperature programmed desorption; Vehicles; Volatile organic compounds; Air pollution
Type
journal article