Navigation Links
CU-Boulder study suggests air quality regulations miss key pollutants
Date:9/24/2008

A new study led by the University of Colorado at Boulder reveals that air quality regulations may not effectively target a large source of fine, organic particle pollutants that contribute to hazy skies and poor air quality over the Los Angeles region.

According to the study, a much smaller percentage of organic haze than was previously thought is directly emitted by vehicles and industrial processes. Instead, 75 percent of fine, organic particle pollutants form when reactive gases called VOCs, or volatile organic compounds, are oxidized and condense onto existing particles in the air.

"Air quality regulations today effectively target most sources of 'primary,' or directly emitted particles," said lead author Ken Docherty, a researcher with the university's Cooperative Institute for Research in Environmental Sciences. "Yet our study indicates that the 'secondary,' or chemically formed particles contribute more significantly to poor air quality, even in very polluted urban regions.

"Our study suggests that regulations need to focus much more attention on the gases -- such as gasoline vapors -- that form secondary organic particles and create visible haze," he said. Other examples of VOCs include vapors from paints, varnishes, cleaning supplies, automotive products and dry-cleaned clothing.

The study will be published in the journal Environmental Science and Technology and was posted online Sept. 23.

According to California state regulatory agencies, motor vehicles and household products are both significant sources of VOCs in the Los Angeles region.

"Although current regulations do target many sources of VOCs, these regulations will need to further reduce VOC emissions and perhaps target still unknown sources to effectively reduce fine particle concentrations," said Docherty. He and his colleagues cautioned that it is not clear which VOCs are most responsible for haze formation.

Docherty al
'/>"/>

Contact: Ken Dochery
kenneth.docherty@colorado.edu
303-492-0594
University of Colorado at Boulder
Source:Eurekalert

Page: 1 2

Related biology news :

1. As Andean glacier retreats, tiny life forms swiftly move in, CU-Boulder study shows
2. Biological invasions increasing due to freshwater impoundments, says CU-Boulder study
3. CU-Boulder, biotech firm team up on python project in search for human cardiac therapeutics
4. Low-gravity training machine reduces joint, muscle impacts, says CU-Boulder study
5. Regional nuclear conflict would create near-global ozone hole, says CU-Boulder study
6. Dust in West up 500 percent in past 2 centuries, says CU-Boulder study
7. Conservation strategies must shift with global environmental change, says CU-Boulder study
8. CU-Boulder technology used to identify unexpected bacteria in cystic fibrosis patients
9. CU-Boulder worm study sheds light on human aging, inherited diseases
10. Nutrient pollution drives frog deformities by ramping up infections, says CU-Boulder study
11. CU-Boulder team discovers first ancient manioc fields in Americas
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/10/2014)... July 2, 2014  Unisys Corporation,s (NYSE: UIS ... Nederland N.V., today announced that it has been selected by ... manage a new Basic Provision Biometrics solution for penitentiaries across ... won the contract with a solution based on its open ... term of the contract is up to seven years, with ...
(Date:7/10/2014)... 2, 2014 NXT-ID, Inc., (OTCQB: NXTD) a biometric authentication company ... Gino Pereira was interviewed on July 1 st ... Tampa Florida . Mr. Pereira discusses the company,s next ... and how the Wocket™ aims to replace a traditional ... Cedric Harris tells Gino he has never heard ...
(Date:7/10/2014)... DUBLIN , July 3, 2014 ... the addition of the "Global Gesture Recognition ... Market - Forecasts to 2020" report to ... Global Gesture Recognition & Touch-Less Sensing ... been around for a while, but the companies ...
Breaking Biology News(10 mins):Unisys Delivers New Basic Provision Biometrics Solution to Dutch Custodial Institutions Service 2Unisys Delivers New Basic Provision Biometrics Solution to Dutch Custodial Institutions Service 3Security and Your Money: Tampa Bay Radio Host Cedric Harris Talks to NXT-ID CEO Mr. Gino Pereira about the Wocket Smart Wallet 2Security and Your Money: Tampa Bay Radio Host Cedric Harris Talks to NXT-ID CEO Mr. Gino Pereira about the Wocket Smart Wallet 3Security and Your Money: Tampa Bay Radio Host Cedric Harris Talks to NXT-ID CEO Mr. Gino Pereira about the Wocket Smart Wallet 4Global Gesture Recognition & Touch-Less Sensing (2D, 3D, Ultrasonic, IR, Capacitive) Market - Forecasts to 2020 2
... useful in helping to prevent pregnancy complications in ... syndrome, Yale School of Medicine researchers have found ... American Journal of Reproductive Immunology . Circulating ... the body to recognize and attack bacteria and ...
... January 22, 2013 How aging affects communication between ... it more difficult to treat a range of disorders, ... study from the Florida campus of The Scripps Research ... brain,s neural circuitry, in some cases significantly altering gene ...
... The Biophysical Society has announced the winners of its ... 58th Annual Meeting at the Moscone Center in San ... Professional Opportunities for Women (CPOW), has initiated these travel ... encourage their participation at the Meeting. The recipients ...
Cached Biology News:Scripps Florida scientists offer new insight into neuron changes brought about by aging 2Biophysical Society announces winners of 2014 CPOW Travel Awards 2
(Date:7/10/2014)... batteries that power our laptops and electric vehicles could ... charge with the help of a sponge-like silicon material. ... the graphite traditionally used in one of the battery,s ... energy storage capacity of graphite. A paper describing the ... today in Nature Communications . , "Silicon has ...
(Date:7/10/2014)... will see the two universities and NPL collaborate to ... and industry and their complementary academic strengths., Working with ... shape the scientific priorities of the UK. The establishment ... 300 high-calibre PhD students, will provide a pipeline of ... potential of the Laboratory will be grown through the ...
(Date:1/15/2014)... January 15, 2014 The Pittcon Organizing Committee ... Food Safety Tech , an e-Journal and producer of ... agreement for the second year for the co-location of Food ... The partnership provides that the registration fee to attend the ...
(Date:1/15/2014)... California , January 15, 2014 Oxford ... today announced the appointment of Thomas C Reynolds MD, PhD ... years, development experience gained in the biotechnology industry, most recently ... am delighted to welcome Tom at this transformative time for ...
Breaking Biology Technology:Silicon sponge improves lithium-ion battery performance 2Silicon sponge improves lithium-ion battery performance 3Universities of Surrey and Strathclyde selected as strategic partners in the future operation of the National Physical Laboratory 2Universities of Surrey and Strathclyde selected as strategic partners in the future operation of the National Physical Laboratory 3Pittcon Announces Second Year Partnership With Food Safety Tech 2Pittcon Announces Second Year Partnership With Food Safety Tech 3Oxford BioTherapeutics Appoints Thomas C Reynolds MD, PhD to its Board of Directors 2Oxford BioTherapeutics Appoints Thomas C Reynolds MD, PhD to its Board of Directors 3
... Inc. (OTC Bulletin Board: YGYB; "Yongye" or the ... products located in the,People,s Republic of China, today ... March 31, 2009. The Company expects net revenue ... from $12.0 million to $12.5 million, up,approximately 26% ...
... 21 Bio-Matrix Scientific Group, Inc. (OTC Bulletin Board: ... announced today that its Board of Directors has declared ... record as of May 5th, 2009 to be paid ... Common shareholders will be entitled to receive one share ...
... has been named the,Singapore Entrepreneurial Company of the ... that have pushed the boundaries of excellence in ... 2008.,Mr David Picard, CEO of Moleac, received the ... Award for Singapore Entrepreneurial Company,of the Year at ...
Cached Biology Technology:Yongye Biotechnology Announces Preliminary Results for its Fiscal Quarter Ended March 31, 2009 2Yongye Biotechnology Announces Preliminary Results for its Fiscal Quarter Ended March 31, 2009 3Bio-Matrix Scientific Group, Inc. Announces Preferred Stock Dividend and Spinoff of Wholly-Owned Subsidiary, Entest Biomedical, Inc. 2Bio-Matrix Scientific Group, Inc. Announces Preferred Stock Dividend and Spinoff of Wholly-Owned Subsidiary, Entest Biomedical, Inc. 3Moleac Named Singapore Entrepreneurial Company of the Year at the Frost & Sullivan Excellence in Healthcare Awards 2Moleac Named Singapore Entrepreneurial Company of the Year at the Frost & Sullivan Excellence in Healthcare Awards 3
...
... Antibody Validation Service enables early selection ... development by providing quantitative data for ... of each antibody. Furthermore quantitative antibody ... off-target activity of your antibodies., The ...
... western blotting. Get results sooner and save hours ... detection. Eliminates the need for a membrane transfer ... reagents are ready-to-use. No reagents to prepare or ... reagents required. Guarantees a simple to perform, mistake-free ...
... paper sandwiches are composed of a precut ... thick filter paper that are preassembled into ... These 7 x 8.5 cm membrane sandwiches ... Gel-sized gels and are supplied as a ...
Biology Products: