HOME >> BIOLOGY >> NEWS
Globetrotting pollutants turn up on Toronto street

Researchers at the University of Toronto have detected migratory pollutants from a forest fire in Quebec and even particles from a sandstorm in the Sahara in Toronto air, findings that could someday give regulatory agencies an idea of who is contributing to the pollutants found in urban air.

"It's a bit of detective work," says Greg Evans, a professor in the Department of Chemical Engineering and Applied Chemistry. "We happened to know when that forest fire was happening in Quebec and we realized that this mixture of different particles that we found in downtown Toronto is a signature for a forest fire." With the dust particles from the Sahara, the researchers recognized sand-like particles and were ultimately able to track their trajectory from the desert, across the Atlantic Ocean to Mexico, then north through the United States to Toronto.

The researchers used a device known as a laser ablation mass spectrometer (LAMS), which pulls in air from College Street and accelerates the pollutants to close to the speed of a bullet. As a particle passes by two lasers, sensors calculate its exact speed and tell the LAMS when to fire a third, high-powered laser that vaporizes a portion of the particle, sending fragments hurtling along a "flight tube". Lighter molecules take less time to travel down the flight tube, giving the researchers the particle's chemical signature. Evans says that once they build up a library of particles, this research could make it possible to identify pollutants without any knowledge of their origin.


'"/>

Contact: Greg Evans
evansg@chem-eng.utoronto.ca
416-978-1821
University of Toronto
19-Oct-2004


Page: 1

Related biology news :

1. NJIT professor obtains patent to uncover trace elements of airborne pollutants
2. Marine seaweed can detoxify organic pollutants
3. Scientists decipher genome of bacterium that helps clean up major groundwater pollutants
4. Stanford environmental molecular science institute will study pollutants, one molecule at a time
5. Gene found to defend against environmental pollutants and pulmonary emphysema
6. Stem cell licensing deal positions Toronto as world leader in technology
7. UCLA/Toronto researchers unlock key to memory storage in brain
8. American Society for Microbiology to host 107th General Meeting in Toronto
9. Enzyme family plays role in Alzheimers: University of Toronto study
10. Society of Nuclear Medicine holds 52nd annual meeting June 1822 in Toronto
11. Low-energy LED lighting project is streets ahead

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Globetrotting pollutants turn Toronto street

(Date:10/22/2014)... Medicine® scientists helps explain how bipolar disorder affects the ... therapies to treat the mental illness. , Scientists ... method recognized with the 2014 Nobel Prize in ... from mice with bipolar-like behaviors. In the synapses (where ... structures with concentrated levels of ANK3 -- the gene ...
(Date:10/22/2014)... , Oct. 20, 2014  Leading identity analyst firm ... half of the world,s population will have a chip-based ... Europe . Asia , ... market accounting for more than 60% of all National ... Acuity,s report  -- "The Global National eID ...
(Date:10/19/2014)... in India over the last 30 years contributed ... growth during that time, according to a new ... Change ., "Energy access is fundamental to development: ... including education, communication, and health," says IIASA researcher ... increased energy access is widely agreed to be ...
Breaking Biology News(10 mins):Bipolar disorder discovery at the nano level 2Half the World's Population Will Have Chip-Based National Electronic Identity (eID) Cards by 2018 2Improved electricity access has little impact on climate change 2
(Date:10/25/2014)... , October 24, 2014 ... Corporation (NASDAQ: CYTR ), Vertex Pharmaceuticals Inc. ... ALXN ), Peregrine Pharmaceuticals Inc. (NASDAQ: ... research on these five companies can be accessed at: ... Thursday, October 23, 2014, ended on a positive note ...
(Date:10/22/2014)... BOSTON , Oct. 22, 2014  Actavis ... specialty pharmaceutical company, and Rhythm, a biopharmaceutical company, today ... to acquire Rhythm,s wholly owned subsidiary, Rhythm Health, Inc., ... for the treatment of diabetic gastroparesis and other GI ... successful Phase 2 trial of relamorelin for the treatment ...
(Date:10/22/2014)... WriteResult, LLC – a premier provider of ... a team of researchers from Yale University’s School of ... to provide electronic questionnaire data collection through use of ... in May, aims to evaluate the impact of a ... and participation in urban agriculture to impact their consumption ...
(Date:10/22/2014)... ROCKVILLE, Md. , Oct. 22, 2014   ... company developing novel pathogen-specific therapies for serious infections and ... Office has issued a Notice of Allowance for a ... product in its C. difficile program, SYN-004. This ... to SYN-004 in the U.S. and adds to the ...
Breaking Biology Technology:Biotech Stocks Technical Data - CytRx, Vertex Pharma, Alexion Pharma, Peregrine Pharma, and StemCells 2Biotech Stocks Technical Data - CytRx, Vertex Pharma, Alexion Pharma, Peregrine Pharma, and StemCells 3Biotech Stocks Technical Data - CytRx, Vertex Pharma, Alexion Pharma, Peregrine Pharma, and StemCells 4Biotech Stocks Technical Data - CytRx, Vertex Pharma, Alexion Pharma, Peregrine Pharma, and StemCells 5Actavis Signs Option to Acquire Rhythm Subsidiary and its GI Development Product, Relamorelin 2Actavis Signs Option to Acquire Rhythm Subsidiary and its GI Development Product, Relamorelin 3Actavis Signs Option to Acquire Rhythm Subsidiary and its GI Development Product, Relamorelin 4Actavis Signs Option to Acquire Rhythm Subsidiary and its GI Development Product, Relamorelin 5myPROpad™ Topic of Panel Discussion at the Yale Food Systems Symposium 2myPROpad™ Topic of Panel Discussion at the Yale Food Systems Symposium 3Synthetic Biologics Announces Allowance of Key U.S. Composition of Matter Patent for C. difficile Program 2Synthetic Biologics Announces Allowance of Key U.S. Composition of Matter Patent for C. difficile Program 3Synthetic Biologics Announces Allowance of Key U.S. Composition of Matter Patent for C. difficile Program 4
Cached News: