Featured Research

from universities, journals, and other organizations

Dirty Windows In Urban Areas May Be Hidden Contributors To Air Pollution

Date:
May 14, 2007
Source:
American Chemical Society
Summary:
The grime that accumulates on windows, buildings, roads, and other surfaces in urban areas could be an important source of nitrogen oxide air pollutants, scientists in Canada conclude in a new report. Nitrogen oxides, emitted in the burning of fossil fuels, combine with other air pollutants termed volatile organic compounds to form smog.

The grime that accumulates on windows, buildings, roads, and other surfaces in urban areas could be an important source of nitrogen oxide air pollutants, scientists in Canada conclude in a new report. Nitrogen oxides, emitted in the burning of fossil fuels, combine with other air pollutants termed volatile organic compounds to form smog.

Related Articles


In the report, D. J. Donaldson and colleagues point out that air pollution researchers have been focusing on urban surface films, often termed "window grime," as a potential contributor to air pollution. The films contain nitrogen compounds, which disappear at rates that can’t be explained by obvious losses due to rain washout. In addition, traditional models of urban air pollution suggest that there must be an important but unrecognized source for one nitrogen compound involved in smog formation.

Their study presents experimental evidence suggesting that windows and other surfaces in urban areas may be sites where "inactive" nitrogen oxides may be transformed into "active" forms and be released to the atmosphere. This transformation may occur in a process triggered by sunlight shining on film-covered surfaces, the report notes.

Article: "Photochemical Loss of Nitric Acid on Organic Films: A Possible Recycling Mechanism for NOx", American Chemical Society, Environmental Science & Technology, Scheduled for publication June 15, 2007.


Story Source:

The above story is based on materials provided by American Chemical Society. Note: Materials may be edited for content and length.


Cite This Page:

American Chemical Society. "Dirty Windows In Urban Areas May Be Hidden Contributors To Air Pollution." ScienceDaily. ScienceDaily, 14 May 2007. <www.sciencedaily.com/releases/2007/05/070514095523.htm>.
American Chemical Society. (2007, May 14). Dirty Windows In Urban Areas May Be Hidden Contributors To Air Pollution. ScienceDaily. Retrieved November 25, 2014 from www.sciencedaily.com/releases/2007/05/070514095523.htm
American Chemical Society. "Dirty Windows In Urban Areas May Be Hidden Contributors To Air Pollution." ScienceDaily. www.sciencedaily.com/releases/2007/05/070514095523.htm (accessed November 25, 2014).

Share This


More From ScienceDaily



More Earth & Climate News

Tuesday, November 25, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Antarctic Sea Ice Mystery Thickens... Literally

Antarctic Sea Ice Mystery Thickens... Literally

Newsy (Nov. 25, 2014) — Antarctic sea ice isn't only expanding, it's thicker than previously thought, and scientists aren't sure exactly why. Video provided by Newsy
Powered by NewsLook.com
3D Map of Antarctic Sea Ice to Shed Light on Climate Change

3D Map of Antarctic Sea Ice to Shed Light on Climate Change

Reuters - Innovations Video Online (Nov. 24, 2014) — A multinational group of scientists have released the first ever detailed, high-resolution 3-D maps of Antarctic sea ice. Using an underwater robot equipped with sonar, the researchers mapped the underside of a massive area of sea ice to gauge the impact of climate change. Ben Gruber reports. Video provided by Reuters
Powered by NewsLook.com
Car Park Solution for Flexible Green Energy

Car Park Solution for Flexible Green Energy

Reuters - Innovations Video Online (Nov. 24, 2014) — A British solar power start-up says that by covering millions of existing car park spaces around the UK with flexible solar panels, the country's power problems could be solved. Suzannah Butcher reports. Video provided by Reuters
Powered by NewsLook.com
Yellow-Spotted Turtles Rescued from Trafficking

Yellow-Spotted Turtles Rescued from Trafficking

Reuters - Light News Video Online (Nov. 24, 2014) — Hundreds of Amazon River turtles released into the wild in Peru. Sharon Reich reports. Video provided by Reuters
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:

Strange & Offbeat Stories

 

Plants & Animals

Earth & Climate

Fossils & Ruins

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins