Vol. 19  No. 2  Oct. 20, 2006  Next Issue: Nov. 3, 2006
A publication of Carleton University's School of Journalism
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Potentially poisonous chemicals
divide Tories, environmentalists

OTTAWA  |  There is hardly a person in Canada who has not used Teflon cookware, eaten from a bag of microwave popcorn, or donned a water-resistant raincoat.

Inside each of these non-stick products are chemicals called perfluorocarbons (PFCs), which end up in the human bloodstream and remain there for decades.

Scientists recently found PFCs in Great Lake fish and Arctic seals, a development that environmental groups say is a serious public health concern.

A 2005 report from the United States Environmental Protection Agency magnified these concerns, since it said some PFCs may cause cancer. Several countries are now working on banning their use.

But as the Canadian government takes steps to restrict these human-made chemicals, environmentalists say the time for half-measures has passed.

Rona Ambrose
Environment Minister Rona Ambrose had her blood tested for PFCs.

"There's no use in being indecisive," says Kapil Khatter, president of Canadian Physicians for the Environment. "When something is persistent and accumulative and could cause a health impact on people, it should be banned."

It is the strength of the carbon-fluorine bonds inside these chemicals, whose use dates back to the 1970s, that causes concern. The longer the bond, the longer it takes to naturally break apart.

In August 2006, the Canadian Environmental Law Association, which includes Khatter's organization, asked the federal government to remove PFCs from all consumer products immediately.

The issue reached the attention of the environment minister, Rona Ambrose, who recently agreed to be tested for PFCs at the request of an environmental group. The results will be released later this fall.

'We've seen far too many examples of these chemicals escaping into the environment and we don't know enough about their effects.'

"The minister decided to participate in the sampling proposed by Environmental Defence to indicate her support for this kind of monitoring and to raise awareness of the issue," wrote Shannon Haggarty, a representative from Ambrose's office, in an e-mail response to our questions.

Canada's plan of attack

The federal government has taken some steps to reduce the use of PFCs in Canada, but environmental groups say it is not enough.

Through two action plans to modify Canada's Environmental Protection Act, the federal government is encouraging manufacturers to gradually remove PFCs from some items on the market.

In July 2006, the government proposed an action plan in its law publication, the Canada Gazette, to ban four fluorotelomers. These are chemicals that become PFCs when they are released in the environment. The House of Commons will not look at the plan for at least another year.

A look at everyday PFCs

Microwave bag Perfluorocarbons can be found everywhere. Click here to see some common sources.
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The government is now drafting another plan, set to be released in the Gazette in December, which aims to restrict and eventually ban the use of perfluorooctyl sulfonates. Products with this type of PFC include carpets and fire-fighting foam.

More than 300 environmental groups, government organizations and industry stakeholders were invited to comment on the PFC sulfonate plan. About 10 groups responded.

To ban or not to ban?

Most organizations agreed a complete ban was impossible for the time being, says Greg Carreau, an Environment Canada official who oversaw the consultation process.

"We can't ask fire fighters to stop using their foam immediately because it is an essential item for crash and rescue," Carreau says. "What we have done is given them a time frame to convert to alternatives."

Scott Mabury talks to MPs
Scott Mabury taught parliamentarians about perfluorocarbons Oct. 2, 2006.

Scott Mabury, a chemist who heads an environmental research group at the University of Toronto, says voluntary changes by industry have already made a difference.

After the company 3M removed long-chain PFCs from its water repellant Scotchgard in 2000, Mabury had a graduate student track a couple of dozen Arctic seals to see if the chemicals in their bloodstream changed.

Within a year, the seals had practically no Scotchgard PFCs left.

"In light of Scotchgard, we largely understand the issue of perfluorocarbons and we are taking obvious steps to remove them," Mabury said during a speech Oct. 2 delivered to parliamentarians at the West Block.

But because of the chemical's persistence and the move by other countries to ban it, Green Party deputy leader David Chernushenko says delaying a Canadian ban on PFCs is not the right thing to do.

"We've seen far too many examples of these chemicals escaping into the environment and we don't know enough about their effects," Chernushenko says. "The onus is on the government to prove these chemicals are safe."

Related Links


Opens in a new window Government of Canada’s PFCA action plan

Opens in a new window Government of Canada’s proposed action plan for PFOS

Opens in a new window Environmental Defence: Regulation of PFCs gaining momentum

Opens in a new window Fluoride Action Network information on PFOS and PFOA

Opens in a new window U.S. Environmental Protection Agency's assessment of PFCs (PDF file)
PFCs at a glance

Perfluorocarbon (PFC): A chemical molecule made up of a chain of carbon and fluorine atoms.  PFCs can be found in non-stick and water-resistant surfaces like Teflon and raincoats.

Perfluorooctyl sulfonate (PFOS): A type of PFC used in the steel plate industry and for fire fighting.

Perfluorooctanoic acid (PFOA): A type of PFC that may, according to the United States Environmental Protection Agency, cause cancer.  PFOA is not used in Canada.

Perfluorinated carboxylic acid (PFCA): A type of PFOA with longer carbon-fluorine chains that accumulates in the human body.

Fluorotelomer: A chemical that changes into a PFC when released into the environment.

Source: Environment Canada

 

PFC regulations around the world

Australia: As of 1989, Australians must pay a fee and have a licence from the environment department if they want to import, export and/or manufacture perfluorocarbons.

Source: Australia's Department of the Environment and Heritage

United States: In 2000, the U.S. Environmental Protection Agency banned the use of PFOS, with some exceptions.  It is working with American companies to phase out the use of PFOA and hopes to be PFOA-free by 2015.

Source: Environmental Defence

Europe: The European Union is adopting an agreement that will require companies to prove their new and existing chemicals are safe before putting them on the market.  Companies will also have to provide safety information for the handling of their chemicals.  The proposal should be adopted at the end of the year.

Source: European Environment Agency


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