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).

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 July 28, 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 July 28, 2014).

Share This




More Earth & Climate News

Monday, July 28, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Asteroid's Timing Was 'Colossal Bad Luck' For The Dinosaurs

Asteroid's Timing Was 'Colossal Bad Luck' For The Dinosaurs

Newsy (July 28, 2014) The asteroid that killed the dinosaurs struck at the worst time for them. A new study says that if it hit earlier or later, they might've survived. Video provided by Newsy
Powered by NewsLook.com
The Carbon Trap: US Exports Global Warming

The Carbon Trap: US Exports Global Warming

AP (July 28, 2014) AP Investigation: As the Obama administration weans the country off dirty fuels, energy companies are ramping-up overseas coal exports at a heavy price. (July 28) Video provided by AP
Powered by NewsLook.com
Raw: Sea Turtle Hatchlings Emerge from Nest

Raw: Sea Turtle Hatchlings Emerge from Nest

AP (July 27, 2014) A live-streaming webcam catches loggerhead sea turtle hatchlings emerging from a nest in the Florida Keys. (July 27) Video provided by AP
Powered by NewsLook.com
Trees Could Save More Than 850 Lives Each Year

Trees Could Save More Than 850 Lives Each Year

Newsy (July 27, 2014) A national study conducted by the USDA Forest Service found that trees collectively save more than 850 lives on an annual basis. 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:
from the past week

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