HOME >> BIOLOGY >> NEWS
Road dust: Rural vehicles emit more pollutants than urban ones

On top of looming tougher pollution rules for SUVs and other popular vehicles, an environmental engineer at Washington University in St. Louis now has devised a new measurement that could make both car owners and manufacturers nervous. It's called ppvm (pollutant per vehicle mile). It is a measurement of the total particulate matter emissions a vehicle makes per mile traveled. While ppvm won't appeal to the auto owner the way that mpg, rpm or mph do, it's likely to have a future impact on air pollution measures and standards nationwide.

Jay R. Turner, D.Sc., assistant professor of chemical engineering and civil engineering at Washington University and director of the university's Air Quality Laboratory, has performed an ambitious study of vehicular emissions in the St. Louis region. Emission measurements were taken for particles smaller than 2.5 micrometers in diameter, which is the size range for a standard issued by the U.S. Environmental Protection Agency (EPA) in 1997. Results from an urban interstate site and a nearby rural Illinois site that Turner surveyed indicate that an average urban vehicle, whether a motorcycle or diesel truck, emits between 30 to 40 milligrams of particulate matter per mile traveled; an average rural vehicle emits between 200 to 300 milligrams ppvm traveled. So much for fresh country air.

"We think there is much more heavy diesel traffic outside the city and there are greater road dust emissions in rural areas because of the proximity to open land, and those account for higher rural readings," Turner explains. Road dust is more than the simple dirt a vehicle stirs up as it moves along the road. Besides dirt from soil, road dust also contains the suspended fine particulate matter created from tail pipe emissions. It is a major significant component of vehicular air pollution that the medical profession and the EPA are paying strict attention to these days. Upper respiratory illnesses, cardiovascu
'"/>

Contact: Tony Fitzpatrick
tony_fitzpatrick@aismail.wustl.edu
314-935-5272
Washington University in St. Louis
18-Jan-2000


Page: 1 2 3 4

Related biology news :

1. Rural Residents Cooperative Response To Water Crisis Now A Model
2. Study of Cape Cod Seashore finds off-road vehicles harmful to beach fauna
3. Study suggests insect-derived antimicrobial peptides could be used as drug-delivery vehicles
4. Electric vehicles promise economic benefits in the billions
5. Unique fleet of underwater vehicles to gather elusive environmental data
6. New tool predicts how long pollutants will stay in soil
7. New space-borne instrument to track greenhouse gases, ozone destroyers, and other pollutants
8. Film found on windows after 9/11 reveals higher level of pollutants
9. New study begins to unravel fate of toxic pollutants harbored in Arctic waters
10. Novel bacterium detoxifies chlorinated pollutants
11. Mediterranean fishery recovers, thanks to manmade pollutants

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Road dust Rural vehicles emit more pollutants than urban ones

(Date:7/30/2014)... is a subject of major interest in neuroscience. ... during the distinct stages of Wallerian degeneration: transcription ... dedifferentiation. Although gene expression responses in the distal ... injury are known, differences in gene expression between ... Dengbing Yao and co-workers from Nantong University, China ...
(Date:7/30/2014)... cells can develop into a multitude of cells types. Researchers ... the specific types of mature cells that make up the ... key seems to be long chains of sugars that dangle ... at the University of California, San Diego, has created synthetic ... can be more easily manipulated to direct the process, they ...
(Date:7/30/2014)... high-resolution map of the carbon stocks stored on ... new and improved methodology used to make the ... carbon economies. The new carbon map also ... provides the critical input to studies of deforestation ... enforcement purposes. The technique includes the determination of ...
Breaking Biology News(10 mins):Peru's carbon quantified: Economic and conservation boon 2Peru's carbon quantified: Economic and conservation boon 3
(Date:7/30/2014)... FRANCISCO , July 30, 2014 ... Congress evaluated the safety and efficacy of CSL ... rejection following kidney transplants in highly sensitized patients. ... inhibitor of the complement system. The ... in significant increases in the levels of complement ...
(Date:7/30/2014)... AZ (PRWEB) July 30, 2014 Sales ... the launch of blended sales training programs for companies ... sales training programs used by thousands of salespeople over ... blended sales training program can be customized to address ... , The blended sales training program consists ...
(Date:7/30/2014)... (PRWEB) July 30, 2014 Vycom announces ... of products, designed to meet Factory Mutual (FM) 4910 ... materials such as wet benches, process tools, fume hoods, ... safety and damage to semiconductor wafers used in electronic ... a flame-retardant PVC solution with excellent workability and superior ...
(Date:7/30/2014)... , July 30, 2014   Epic Sciences, ... and develops novel diagnostics to personalize and advance the ... of Gregory T. Lucier as chairman of ... and CEO of Life Technologies (formerly Invitrogen). Mr. Lucier ... Epic commercializes its circulating rare cell analysis platform with ...
Breaking Biology Technology:Study Suggests C1-INH May Aid in Prevention of Antibody-Mediated Rejection Following Kidney Transplant 2Study Suggests C1-INH May Aid in Prevention of Antibody-Mediated Rejection Following Kidney Transplant 3Sales Horizons Launches New Blended Sales Training Programs to Companies Engaged in Complex B2B Sales 2Sales Horizons Launches New Blended Sales Training Programs to Companies Engaged in Complex B2B Sales 3Vycom Announces Flametec® Thermax PVC (FM4910 Listed) For a Variety of Clean Room Applications with Excellent Workability and Aesthetics 2Epic Sciences Appoints Greg Lucier as Chairman of the Board of Directors 2Epic Sciences Appoints Greg Lucier as Chairman of the Board of Directors 3
Cached News: