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:12/18/2019)... ... December 17, 2019 , ... PM360, a leading trade magazine ... has named Pharmafusion LLC as one of the most innovative startups of 2019. ... founder/CEO Jonathan Retano. Earlier in the year, Pharmafusion was featured as one of ...
(Date:12/14/2019)... ... 12, 2019 , ... Crop Enhancement Inc., an ... Jean Pougnier as chief business officer. Mr. Pougnier will lead the company’s efforts ... will position the company for maximum commercial success. As part of the expansion ...
(Date:12/4/2019)... ... December 04, 2019 , ... ... launched Subnovii Advanced Plasma Technology for U.S. dermatologists, plastic surgeons and ... the only plasma to employ LF technology – low frequency plus a patented ...
Breaking Biology News(10 mins):
(Date:12/30/2019)... TOWNSHIP, N.J. (PRWEB) , ... December 30, 2019 ... ... of custom built, helium-based leak testing instruments for the Pharmaceutical, Biotechnology, Medical Device ... SIMS Version 1.11.19 21 CFR Part 11 compliant software program specific to the ...
(Date:12/18/2019)... ... December 17, 2019 , ... Philadelphia ... to announce that it has hired Dr. Alia Orbin, Ph.D., J.D., an experienced ... in the preparation, filing and prosecution of patent applications related to pharmaceutical sciences, ...
(Date:12/4/2019)... United Kingdom (PRWEB) , ... December 03, 2019 ... ... of recombinant antibody products and services, today announced a partnership with the Recombinant ... Chicago, University of Toronto, and UC San Francisco (UCSF) with a common goal ...
(Date:12/2/2019)... ... December 02, 2019 , ... Registration is now ... Meeting, which will be held at the Hynes Convention Center May 12-15, 2020, in ... therapy and brings together scientists, physicians, patient advocates, and other stakeholders with the goal ...
Breaking Biology Technology:
Cached News: