Featured Research

from universities, journals, and other organizations

Particulate Matter From California Wildfires Is More Toxic Than Particulate Matter In Ambient Air

Date:
February 13, 2009
Source:
Environmental Health Perspectives
Summary:
A study of coarse and fine particulate matter (PM) generated by the California wildfires of 2008 suggests a toxicity level greater than that of an equivalent dose of PM in ambient air. The study adds to growing literature supporting source and component specific differences in toxicity of pollutant particles of a given size, and challenges regulators to consider toxicity as well as mass or size when regulating particle pollution.

Spectators watch as a recent Southern California brush fire burning close to homes.
Credit: iStockphoto/Scott Vickers

A study of coarse and fine particulate matter (PM) generated by the California wildfires of 2008 suggests a toxicity level greater than that of an equivalent dose of PM in ambient air, as reported in the January 2009 issue of the peer-reviewed journal Environmental Health Perspectives (EHP).

Related Articles


The study adds to growing literature supporting source and component specific differences in toxicity of pollutant particles of a given size, and challenges regulators to consider toxicity as well as mass or size when regulating particle pollution.

Toxicity of coarse and fine PM obtained during peak smoke during the wildfires was determined with a mouse bioassay and compared with PM samples collected under normal conditions from the region during the same time the previous year.

“These observations highlight the critical importance of bioassays of toxicity of inhaled pollutants in whole animals as a component of a balanced scientific approach to estimating their toxicity,” wrote the research team, which included first author Teresa Wegesser, Kent E. Pinkerton, and Jerold A. Last.

“These findings add to the accumulating evidence that all particles of a given size class do not necessarily have the same toxicity, and suggest that the current standard for particulate matter may need reconsideration,” said EHP editor-in-chief Hugh A. Tilson, PhD. “The challenge is to integrate this accumulating evidence regarding particle toxicity in a way that is applicable to regulation and review of the Clean Air Act.”


Story Source:

The above story is based on materials provided by Environmental Health Perspectives. Note: Materials may be edited for content and length.


Journal Reference:

  1. Wegesser et al. California Wildfires of 2008: Coarse and Fine Particulate Matter Toxicity. Environmental Health Perspectives, 2009; DOI: 10.1289/ehp.0800166

Cite This Page:

Environmental Health Perspectives. "Particulate Matter From California Wildfires Is More Toxic Than Particulate Matter In Ambient Air." ScienceDaily. ScienceDaily, 13 February 2009. <www.sciencedaily.com/releases/2009/02/090213111441.htm>.
Environmental Health Perspectives. (2009, February 13). Particulate Matter From California Wildfires Is More Toxic Than Particulate Matter In Ambient Air. ScienceDaily. Retrieved December 21, 2014 from www.sciencedaily.com/releases/2009/02/090213111441.htm
Environmental Health Perspectives. "Particulate Matter From California Wildfires Is More Toxic Than Particulate Matter In Ambient Air." ScienceDaily. www.sciencedaily.com/releases/2009/02/090213111441.htm (accessed December 21, 2014).

Share This


More From ScienceDaily



More Earth & Climate News

Sunday, December 21, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Raw: Lava on Track to Hit Hawaii Market

Raw: Lava on Track to Hit Hawaii Market

AP (Dec. 19, 2014) Lava from an active volcano on Hawaii's Big Island slowed slightly but stayed on track to hit a shopping center in the small town of Pahoa. (Dec. 19) Video provided by AP
Powered by NewsLook.com
Birds Might Be Better Meteorologists Than Us

Birds Might Be Better Meteorologists Than Us

Newsy (Dec. 19, 2014) A new study suggests a certain type of bird was able to sense a tornado outbreak that moved through the U.S. a day before it hit. Video provided by Newsy
Powered by NewsLook.com
Navy Unveils Robot Fish

Navy Unveils Robot Fish

Reuters - Light News Video Online (Dec. 18, 2014) The U.S. Navy unveils an underwater device that mimics the movement of a fish. Tara Cleary reports. Video provided by Reuters
Powered by NewsLook.com
Arctic Warming Twice As Fast As Rest Of Planet

Arctic Warming Twice As Fast As Rest Of Planet

Newsy (Dec. 18, 2014) The Arctic is warming twice as fast as the rest of the planet, thanks in part to something called feedback. Video provided by Newsy
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