Navigation Links
AGU: Gasoline worse than diesel when it comes to some types of air pollution
Date:3/2/2012

air pollution. "Each instrument tells a story about one piece of the puzzle," she said. "Where do the particles come from? How are they different from weekday to weekend, and are the sources of vehicle emissions different from weekday to weekend?" she said.

From their measurements, the scientists were able to confirm, as expected, that diesel trucks were used less during weekends, while the use of gasoline vehicles remained nearly constant throughout the week. The team then expected that the weekend levels of SOAs would take a dive from their weekday levels, Bahreini said.

But that was not what they found.

Instead the levels of the SOA particles remained relatively unchanged from their weekday levels. Because the scientists knew that the only two sources for SOA production in this location were gasoline and diesel fumes, the study's result pointed directly to gasoline as the key source.

"The contribution of diesel to SOA is almost negligible," Bahreini said. "Even being conservative, we could deduce from our results that the maximum upper limit of contribution to SOA would be 20 percent."

That leaves gasoline contributing the other 80 percent or more of the SOA, Bahreini said. The finding will be published in Geophysical Research Letters, a journal of the American Geophysical Union. "While diesel engines emit other pollutants such as soot and nitrogen oxides, for organic aerosol pollution they are not the primary culprit," Bahreini said.

If the scientists were to apply their findings from the LA study to the rest of the world, a decrease in the emission of organic species from gasoline engines may significantly reduce SOA concentrations on a global scale as well. This suggests future research aimed at understanding ways to reduce gasoline emissions would be valuable.


'/>"/>
Contact: Kate Ramsayer
kramsayer@agu.org
202-777-7530
American Geophysical Union
Source:Eurekalert

0

GOOD

Page: 1 2

Related biology news :

1. Leaded gasoline predominant source of lead exposure in latter 20th century
2. Researchers boost production of biofuel that could replace gasoline
3. The coming of biofuels: Study shows reducing gasoline emissions will benefit human health
4. The biodiversity crisis: Worse than climate change
5. Earths massive extinction: The story gets worse
6. Get ready for spring - hay fever worse in spring than summer
7. Heart rate recovery predicts clinical worsening in pulmonary hypertension
8. Air pollution a culprit in worsening drought and flooding
9. Rising air pollution worsens drought, flooding, UMD-led study shows
10. Physical and emotional health of older couples linked for better or worse, study finds
11. Pitt/Iowa team finds cellular structural molecule can be toxic: Makes pneumonia worse
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/22/2013)... developed a novel technique that can detect molecular variants ... is one of the most important, though time-consuming, processes ... paper in Nature , post-doctoral researcher David Patterson, ... of the Center for Free-Electron Laser Science (CFEL) in ... microwave fields to identify molecular variants apart, and to ...
(Date:5/22/2013)... drastically reduces the time and effort needed to ... biotechnology, scientists are reporting. Published in the journal ... the way for more rapid development of designer ... activities. , Keith Shearwin and colleagues explain that ... material DNA into a bacterium,s genome is critical ...
(Date:5/22/2013)... Legionella pneumophila bacteria is responsible for legionellosis, an ... to infect us, this pathogen has developed a complex ... in our cells, thus avoiding these acting against the ... research centre, CIC bioGUNE, in which teams from the ... the National Supercomputation Centre in Barcelona (BSC) have also ...
Breaking Biology News(10 mins):Detecting mirror molecules 2Detecting mirror molecules 3Mechanism discovered which aids Legionella to camouflage itself in the organism 2
... section of the AIDS virus,s protein envelope once considered an ... of the most promising, new research by Dana-Farber Cancer Institute ... known as the V3 loop, is an attractive vaccine target ... protection against multiple genetic subtypes of HIV-1, the virus that ...
... block of aluminum with a tiny groove carved in ... of Standards and Technology (NIST) and the Polytechnic Institute ... chemistry" method for making biodegradable polymers. Their recently published ... microfluidics, a technology more commonly associated with inkjet printers ...
... The wolves and moose of Isle Royale have done ... more than half a century studying them. In ... of the Royal Society and in their 2010-2011 annual ... O. Peterson tell an unexpected tale of genetic immigration. ...
Cached Biology News:Study identifies promising target for AIDS vaccine 2Study identifies promising target for AIDS vaccine 3Microreactors: Small scale chemistry could lead to big improvements for biodegradable polymers 2Poop reveals an immigrant in Isle Royale wolves' gene pool 2Poop reveals an immigrant in Isle Royale wolves' gene pool 3
(Date:5/23/2013)... Can economic incentives such as gift cards, ... the public to increase their donations of blood? , ... Business School Assistant Professor Mario Macis says the ... body of recent research that supports their argument, the ... of Science that the World Health Organization and national ...
(Date:5/23/2013)... May 23, 2013  Rahal Letterman Lanigan Racing (RLL) ... blood stem cell banking and therapeutics, announced today that ... 16 Acorn Stairlifts Indy car driven by ... of the IZOD IndyCar 2013 season.   ... to support awareness of umbilical cord blood banking and ...
(Date:5/23/2013)... 2013  Saddleback Memorial Medical Center in ... hospital on the West Coast to perform a hysterectomy ... provides women with a state-of-the-art, minimally invasive approach to ... , M.D., a highly regarded Orange ... of minimally invasive surgery at Saddleback Memorial, led the ...
(Date:5/23/2013)... , May 23, 2013 Z Trim ... value-added ingredients to a variety of industries, announced that ... a panel discussion at this year,s National Restaurant Association ... 2013, on behalf of the Research Chefs Association.  Chef ... Restaurants: The Good, the Bad and the Ugly," joining ...
Breaking Biology Technology:Offering Economic Incentives to Attract Blood Donations Should Be Encouraged, Research Team writes in Science 2Offering Economic Incentives to Attract Blood Donations Should Be Encouraged, Research Team writes in Science 3StemCyte, Inc. Joins Rahal Letterman Lanigan Racing As Associate Sponsor Of No. 16 IndyCar Program For James Jakes Beginning With The 97th Indianapolis 500 2StemCyte, Inc. Joins Rahal Letterman Lanigan Racing As Associate Sponsor Of No. 16 IndyCar Program For James Jakes Beginning With The 97th Indianapolis 500 3Saddleback Memorial Surgeon First on the West Coast to Perform Single-Site Robotic Hysterectomy 2Saddleback Memorial Surgeon First on the West Coast to Perform Single-Site Robotic Hysterectomy 3Z Trim's Chef Erin Ryan sits on Expert Panel at NRA Show 2Z Trim's Chef Erin Ryan sits on Expert Panel at NRA Show 3
... Zero Zone, Inc., of North Prairie, Wisconsin, has signed ... software. The new software is fully integrated with ... including IFS' supply chain management and financial applications, which ... and freezer display cases used primarily by grocery, convenience, ...
... the hyperboleers, there is a B-movie style, winner-take-all battle of ... Old Economy. In round one, the New Economy stomped around ... the death of the Old Economy. In round two, the ... of the ring, crushing many innocent and not-so-innocent bystanders in ...
... Automating Peripherals, Inc., announced today the official name ... is a provider of time and attendance, ... and access control software for healthcare organizations. ... while serving the healthcare industry as Automating Peripherals, ...
Cached Biology Technology:Zero Zone Adds Sales and Marketing Automation Tools 2The Old Economy Vs. the New Economy 2The Old Economy Vs. the New Economy 3
Anti-Kusabira Orange Monoclonal Antibody Description: 100 g Research Focus: tag Storage: -20C Shipping Temperature: 4C...
Anti-Kusabira Orange Monoclonal Antibody Description: 100 g Research Focus: tag Storage: -20C Shipping Temperature: 4C...
Rabbit anti-NFkB p105/p50 (Ser337) Class: Antibody Product Group: Signalling molecules and phospho-specific Antibody...
Anti-Kusabira Orange Monoclonal Antibody Description: 100 g Research Focus: tag Storage: -20C Shipping Temperature: 4C...
Biology Products: