A Quantitative Description of Vehicle Exhaust Particle Size Distributions in a Highway Tunnel

Abu-Allaban, Mahmoud; Rogers, C. Fred; Gertler, Alan W.
March 2004
Journal of the Air & Waste Management Association (Air & Waste M;Mar2004, Vol. 54 Issue 3, p360
Academic Journal
During the period May 18-May 22, 1999, a comprehensive study was conducted in the Tuscarora Mountain Tunnel on the Pennsylvania Turnpike to measure real-world motor-vehicle emissions. As part of this study, size distributions of particle emissions were determined using a scanning mobility particle sizer. Each measured size distribution consisted of two modes: a nucleation mode with midpoint diameter less than 20 nm and an accumulation mode with midpoint diameter less than 100 nm. The nucleation and accumulation components in some distributions also exhibited second maxima, which implies that such particle size distributions are superpositions of two particle size distributions. This hypothesis was utilized in fitting the particle size distributions that exhibited second maxima with four log-normal distributions, two for the nucleation mode and two for the accumulation mode. The fitting assumed that the observed particle size distribution was a combination of two bimodal log-normal distributions, one attributed to the heavy-duty diesel (HDD) vehicles and another attributed either to a different class of HDD vehicles or to the light-duty spark ignition vehicles. Based on this method, estimated particle production rates were 1.8 x 10[sup13] and 2.8 x 10[sup14] particles/vehicle-km for light-duty spark ignition and HDD vehicles, respectively, which agreed with independently obtained estimates.


Related Articles

  • An Integer Programming Model for Locating Vehicle Emissions Testing Stations. Swersey, Arthur J.; Thakur, Lakshman S. // Management Science;Mar95, Vol. 41 Issue 3, p496 

    Connecticut and other states not in compliance with federal air quality standards are required to implement a motor vehicle inspection program to test vehicles for pollutants--hydrocarbons and carbon monoxide. The problem is to determine the number, size, and locations of stations given...

  • Adjusting Tapered Element Oscillating Microbalance Data for Comparison with Federal Reference Method PM2.5 Measurements in Region 5.  // Journal of the Air & Waste Management Association (Air & Waste M;May2003, Vol. 53 Issue 5, p1 

    Focuses on the application of the tapered element oscillating microbalance (TEOM) for measuring particulate matter with a diameter less than 2.5 um (PM2.5). Independent factor that causes the TEOM to underestimate the Federal Reference Method (FRM) value; Linear relationship for analysis of TEOM...

  • KARBÃœRATÖRLÃœ MOTORA KARIÅžIM İÇERÄ°SÄ°NE SAF OKSÄ°JEN Ä°LAVE EDÄ°LMESÄ°NÄ°N MOTOR KARAKTERÄ°STÄ°KLERÄ°NE ETKÄ°SÄ°. Sezer, Kazim; Özdalyan, Bülent; Çelik, M. Bahattin // Teknoloji;Apr-Jun2005, Vol. 8 Issue 2, p139 

    One of the most important problems of today is air pollution. The exhaust emission values and specific fuel consumption of the engines with carburetor, whose sales have been stopped in our country since the year of 2000, are quite high compared to the vehicles with injectors. In the internal...

  • Dust emission from desertified lands in the Heihe River Basin, Northwest China. Wang, Tao; Ta, Wanquan; Liu, Lichao // Environmental Geology;Feb2007, Vol. 51 Issue 8, p1341 

    The annual and seasonal dust emissions were calculated for eight types of desertified lands at 120 sites in the Heihe River Basin of northwestern China. The results showed that dust emission rates increased from the middle to the lower reaches of the river by a factor of up to 103. There two...

  • Changes in Fine PM Pollution Levels with Tightening of Regulations on Vehicle Emissions. Iijima, Akihiro; Kumagai, Kimiyo // World Academy of Science, Engineering & Technology;2012, Issue 72, p1200 

    A long-term campaign for monitoring the concentration of atmospheric Particulate Matter (PM) was conducted at multiple sites located in the center and suburbs of the Tokyo Metropolitan Area in Japan. The concentration of fine PM has shown a declining trend over the last two decades. A positive...

  • Numerical investigations on the contribution of point source emissions to the PM2.5 concentrations in Fairbanks, Alaska. Tran, Huy N. Q.; Mölders, Nicole // Atmospheric Pollution Research;Apr2012, Vol. 3 Issue 2, p199 

    Simulations with and without consideration of emissions from point sources were performed with the Weather Research and Forecasting model with online chemistry (WRF/Chem) to examine the contribution of point source emissions to the PM2.5 concentrations at breathing level in Fairbanks, Alaska...

  • On the Efficiency of Competitive Markets for Emission Permits. Sophocles Sartzetakis, Eftichios // Environmental & Resource Economics;Jan2004, Vol. 27 Issue 1, p1 

    It is typical for economists andpolicy makers alike to presume that competitivemarkets allocate emission permits efficiently.This paper demonstrates that competition in theemission permits market cannot assureefficiency when the product market isoligopolistic. We provide the conditions...

  • TECH TIPS. Gordon, Jacques // Motor Age;Oct2005, Vol. 124 Issue 10, p52 

    The article presents a question and answer about a 1996 Morgan automobile that has a British Ford engine. It also has an onboard diagnostic system, but the connector has only two prongs. As far as emissions inspection is concerned, the 1996 model-year designation would make it impossible for the...

  • WHAT TO LOOK FOR. Bloech, Henning // Environmental Design & Construction;Jan/Feb2004, Vol. 7 Issue 1, p72 

    Presents a question and answer advisory related to emission control of certain building materials and indoor air quality for sustainable architecture in the U.S. Examination of building materials for chemical emission performance; Criteria for selecting tested samples of building material;...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics