Featured Research

from universities, journals, and other organizations

Arsenic, River And Road Salt Under Examination

Date:
February 17, 1998
Source:
University Of Toronto
Summary:
Preliminary lab results show that road salt may extract arsenic out of the sediment at the bottom of rivers and lakes where arsenic is embedded.

To most people, winter road salt is not one of Toronto's bragging rights. But to U of T researchers, road salt in Toronto -- specifically in the Don River -- is the key to a better understanding of arsenicand its mobility and toxicity in the environment.

Related Articles


Professor Miriam Diamond of geography and graduate student Mehran Monabbati of chemical engineering and applied chemistry have found the perfect location for their research. "We [in Ontario] apply a lot of salt on our roads, with Toronto alone using 150,000 tonnes a year," says Diamond. "The nearby Don Valley River becomes very salty because snow and salt drain into the riverway and that's how the two substances mix."

Much of the arsenic that is polluting water in North America has been dislodged during mining operations, says Diamond. When open pit mines are abandoned, they fill with rain and ground water, a process that releases the ground's naturally occurring arsenic into creeks and rivers. It is then absorbed by algae which transports it to the bottom where it stays until dislodged into the water again. The whole cycle repeats itself time and again.

Arsenic, Diamond says, can change form and become a sort of different "species," depending on the substances into which it comes in contact during its travels. A dangerous species can change into a less dangerous species and vice versa.

In initial lab results, the researchers found that road salt may extract arsenic out of the sediment at the bottom of rivers and lakes where arsenic is embedded. They presented their results to The Society of Environmental Toxicology and Chemistry in San Francisco in November.

CONTACTS:

Professor Miriam Diamond
Department of Geography
(416) 978-1586 or 978-1749
e-mail: [email protected]

Michah Rynor
U of T Public Affairs
(416) 978-2104
e-mail: [email protected]


Story Source:

The above story is based on materials provided by University Of Toronto. Note: Materials may be edited for content and length.


Cite This Page:

University Of Toronto. "Arsenic, River And Road Salt Under Examination." ScienceDaily. ScienceDaily, 17 February 1998. <www.sciencedaily.com/releases/1998/02/980217160342.htm>.
University Of Toronto. (1998, February 17). Arsenic, River And Road Salt Under Examination. ScienceDaily. Retrieved December 18, 2014 from www.sciencedaily.com/releases/1998/02/980217160342.htm
University Of Toronto. "Arsenic, River And Road Salt Under Examination." ScienceDaily. www.sciencedaily.com/releases/1998/02/980217160342.htm (accessed December 18, 2014).

Share This


More From ScienceDaily



More Earth & Climate News

Thursday, December 18, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Navy Unveils Robot Fish

Navy Unveils Robot Fish

Reuters - Light News Video Online (Dec. 18, 2014) The U.S. Navy unveils an underwater device that mimics the movement of a fish. Tara Cleary reports. Video provided by Reuters
Powered by NewsLook.com
Arctic Warming Twice As Fast As Rest Of Planet

Arctic Warming Twice As Fast As Rest Of Planet

Newsy (Dec. 18, 2014) The Arctic is warming twice as fast as the rest of the planet, thanks in part to something called feedback. Video provided by Newsy
Powered by NewsLook.com
Ivory Trade Boom Swamps Law Efforts

Ivory Trade Boom Swamps Law Efforts

Reuters - Business Video Online (Dec. 17, 2014) Demand for ivory has claimed the lives of tens of thousands of African elephants and now a conservation report says the illegal trade is overwhelming efforts to enforce the law. Amy Pollock reports. Video provided by Reuters
Powered by NewsLook.com
Indictments in West Virginia Chemical Spill Case

Indictments in West Virginia Chemical Spill Case

AP (Dec. 17, 2014) A grand jury indicted four former executives of Freedom Industries, the company at the center of the Jan. 9, 2014 chemical spill in Charleston, West Virginia. The spill contaminated the Elk River and the water supply of 300,000 people. (Dec. 17) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Plants & Animals

Earth & Climate

Fossils & Ruins

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins