Researchers shed light on sulfolane pollution in the Prairies

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In the Prairies, where oil and gas sites sprinkle much of land, researchers are calling attention to a little-known chemical pollutant the fossil fuel industry has for decades released into the natural environment. Sulfolane was long thought to be harmless but now there is growing evidence of its toxicity, and emerging calls to clean it up.

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This article was published 18/04/2024 (908 days ago), so information in it may no longer be current.

In the Prairies, where oil and gas sites sprinkle much of land, researchers are calling attention to a little-known chemical pollutant the fossil fuel industry has for decades released into the natural environment. Sulfolane was long thought to be harmless but now there is growing evidence of its toxicity, and emerging calls to clean it up.

Illustration by Ata Ojani / Canada's National Observer
Illustration by Ata Ojani / Canada's National Observer

Sulfolane was first used in the 1940s by Shell, and has since been broadly adopted by the industry. In Alberta, it is used heavily to “sweeten” sour gas (which makes up a third of natural gas in the province) by removing acidic components from it, explains researcher Erica Pensini, an associate professor of engineering at the University of Guelph. There is little data on the impact of the chemical on humans, but it has been shown to affect fertility in cattle, and Health Canada notes that “overall, oral exposure to sulfolane in experimental animals was associated with immunological, renal and reproductive and developmental effects.”

To read more of this story first reported by Canada’s National Observer, click here.

This content is made available to Winnipeg Free Press readers as part of an agreement with Canada’s National Observer that sees our two trusted news brands collaborate to better cover Canada. Questions about Observer content can be directed to adrienne@nationalobserver.com.

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