Navigation Links
Where there's wildfire smoke, there's toxicity
Date:11/19/2008

The health threat to city dwellers posed by Southern California wildfires like those of November 2008 may have been underestimated by officials.

Detailed particulate analysis of the smoke produced by previous California wild fires indicates that the composition posed more serious potential threats to health than is generally realized, according to a new paper analyzing particulate matter (PM) from wildfires in Southern California.

The paper, entitled "Physicochemical and Toxicological Profile of Particulate Matter (PM) in Los Angeles during the October 2007 Southern California Wildfires," will appear in Environmental Science and Technology. It confirms earlier studies by air polllution specialist Constantinos Sioutas of the USC Viterbi School of Engineering, who is also co-director of the Southern California Particle Center.

For the study Sioutas and colleagues from USC, the University of Wisconsin-Madison and RIVM (the National Institute of Health and the Environment of the Netherlands) analyzed the particular matter gathered during the fall 2007 blazes.

"Fire emissions produce a significantly larger aerosol in size than typically seen in urban environments during periods affected by traffic sources, which emit mostly ultrafine particles," Sioutas said.

"Staying indoors may not provide protection from smoke particles in the absence of air conditioning or the ability to recirculate filtered indoor air. This is because the fire particles can penetrate indoor structures more readily than particles from vehicular emissions."

According to Sioutas, the fires produce a dangerous mix. "The chemical composition of particles during the fire episodes is different than that during 'normal' days impacted by traffic sources.

"Tracers of biomass burning (e.g. potassium and levoglucosan) were elevated by two-fold during the fire periodm" he said. "Water-soluble organic carbon (WSOC) was also higher during the fire event. This makes these particles from wood smoke more bioavailable, thus more readily absorbable by our system than particulate matter from traffic sources."

The ability of the particulates to penetrate structures, even if windows are closed, and their potential ability to be absorbed by human tissues are a matter of concern. "More aggressive measures to avoid smoke seem to deserve study, including distribution of masks and evacuation to air conditioned environments, and closure of non-smoke secured schools," said Sioutas, who holds the school's Fred Champion Professorship of Civil and Environmental Engineering.


'/>"/>

Contact: Eric Mankin
mankin@usc.edu
213-821-188-731-038-34109
University of Southern California
Source:Eurekalert  

Related biology news :

1. Survey highlights support for nanotech in health fields but disapproval elsewhere
2. Where optics meets medicine
3. A new journal where molecular biology meets clinical research
4. Where is your soil water? Crop yield has the answer
5. Not just for the monkeys: New publication shows evolution is everywhere
6. New study predicts where corals can thrive
7. How and where fat is stored predicts disease risk better than weight
8. Where college students live can impact their weight, eating and exercise habits
9. MRSA in hospital intensive care -- whats growing where?
10. Where will we find the next generation of engineers?
11. Where and why humans made skates out of animal bones
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Where there's wildfire smoke, there's toxicity
(Date:4/13/2017)... India , April 13, 2017 According to ... Proofing, Identity Authentication, Identity Analytics, Identity Administration, and Authorization), Service, Authentication Type, ... MarketsandMarkets™, the IAM Market is expected to grow from USD 14.30 Billion ... Growth Rate (CAGR) of 17.3%. ... MarketsandMarkets ...
(Date:4/11/2017)... NXT-ID, Inc. (NASDAQ:   NXTD ) ... appointment of independent Directors Mr. Robin D. Richards ... Directors, furthering the company,s corporate governance and expertise. ... Gino Pereira , Chief Executive ... their guidance and benefiting from their considerable expertise as we ...
(Date:4/5/2017)... KEY FINDINGS The global market ... CAGR of 25.76% during the forecast period of 2017-2025. ... for the growth of the stem cell market. ... MARKET INSIGHTS The global stem cell market is segmented ... The stem cell market of the product is segmented ...
Breaking Biology News(10 mins):
(Date:4/20/2017)... AMSTERDAM , April 20, 2017 Dutch philosopher Koert ... of ,Next Nature, at the University of Technology in Eindhoven - has ... In this letter, he calls on humanity to avoid becoming a slave and ... race. ... Dutch philosopher Koert van Mensvoort – founder of ...
(Date:4/19/2017)... (PRWEB) , ... April 18, 2017 , ... A number ... advances. This webinar, which is part of the Protein and Cell Analysis Education ... and outline where this technology fits in current and future applications. , Many ...
(Date:4/19/2017)... ... 2017 , ... ThermaGenix, the PCR Improvement Company, announces the ... other early achievements at ThermaGenix, including the business formation and licensing agreements, and ... use proceeds from the Series A-1 round to:, , ...
(Date:4/19/2017)... April 19, 2017  As a Bronze ... Heroin Summit ,  Proove® Biosciences, Inc. announces ... environmental, and lifestyle factors to accurately predict prescription ... of Southern California (USC), the Interventional Pain Institute ... publish results showing that Proove Opioid Risk® accurately ...
Breaking Biology Technology: