HOME >> BIOLOGY >> NEWS
Banned chemical travels across three oceans

A chemical once used in pesticides in Asia has accumulated thousands of miles away in Canada, according to a University of Toronto study.

High concentrations of alpha-hexachlorocyclohexane (HCH) were detected in the atmosphere of Sable Island off the coast of Nova Scotia and Newfoundland, says Professor Frank Wania of chemistry. The chemical was last used about 15 years ago in countries such as China and India but followed atmospheric and water flows across the Pacific, Arctic and Atlantic oceans to end up in eastern Canada. Frigid northern temperatures slowed its evaporation and degradation rate and trapped the chemical until it hit warmer waters where it will eventually evaporate.

"The Arctic Ocean has a 'lid' on top in form of an ice cover," says Wania. "Over the last 20 years it acted as a sort of refrigerator preserving the chemical that is now flowing into Atlantic Canada."

In the study, Wania and his team established a network of air sampling stations on a north-south route from the Arctic to Central America and east-west from Newfoundland to Vancouver Island. The sampling stations consist of polymer resins pellets of a lightweight plastic material that absorb pollutants like a sponge, allowing researchers to monitor alpha-HCH and other chemicals across the continent.


'"/>

Contact: Karen Kelly
k.kelly@utoronto.ca
416-978-0260
University of Toronto
16-Mar-2004


Page: 1

Related biology news :

1. DNA lends scientists a hand, revealing new chemical reactions
2. Grant advances biochemical engineering laboratory
3. Bullish chemical could repel yellow fever mosquitoes
4. Computer database being developed at Temple will allow for better inventory of chemicals
5. Cleaner water, more efficient electricity among UH chemical research
6. New world record magnet for chemical and biomedical research
7. Common chemicals morphing into potential toxins in Arctic
8. PTC Therapeutics researchers identify biochemical pathway important for modulating cell growth
9. Research finds lawn chemicals raise cancer risk in Scottish terriers
10. AChemS: Cutting edge research in taste, smell, & chemical irritation
11. Bioreactor boosts chemical fermentation by 50 percent: study

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:3/27/2021)... ... March 25, 2021 , ... Phlexglobal announced ... Planet Group, has selected Phlexglobal and its innovative regulatory SaaS software, PhlexSubmission, as ... a comprehensive review of five regulatory software companies, with the review team including ...
(Date:3/27/2021)... ... 25, 2021 , ... The 2021 Virtual Conference on Clinical Trial Supply-Europe ... More and more, clinical trial supply conferences are featuring speakers and forums that ... Asymmetrex’s founder and CEO, James L. Sherley, M.D., Ph.D., presented a talk ...
(Date:3/23/2021)... ... March 23, 2021 , ... G-CON Manufacturing (G-CON), the ... by Matica Biotechnology (Matica Bio), a contract development and manufacturing organization (CDMO) specializing ... the cleanroom build out for its new GMP production facility in College Station, ...
Breaking Biology News(10 mins):
(Date:3/27/2021)... ... March 24, 2021 , ... ... Life Sciences and Healthcare firms of all sizes, adds depth to its team ... specialist. Pardillo, who earned his doctorate in computational chemistry from Florida International University ...
(Date:3/27/2021)... ... March 24, 2021 , ... ABI Wellness, ... and reporting approach designed under CEO Mark Watson, today announced a webinar dedicated ... featuring guest speakers Dr. Cameron Clark, Neuropsychologist and Founder of Sharp Thinking, and ...
(Date:3/27/2021)... ... ... The Xtalks editorial team is pleased to announce the launch of the ... joined by editorial team members Ayesha Rashid, Sydney Perelmutter and Mira Nabulsi to discuss ... including insights from industry experts. , The Xtalks Life Science podcast will feature ...
(Date:3/23/2021)... Conn. (PRWEB) , ... March 23, 2021 , ... ... develops solutions for characterizing microbiome populations down to the strain level, recently unveiled ... applications. , Not all microbes are created equal: some are easy to ...
Breaking Biology Technology:
Cached News: