Soot falling across Hamilton contains toxic chemicals linked to burning coal, researchers find
Researchers from McMaster University have confirmed that black soot falling on Hamilton, Ontario, contains toxic chemicals linked to coal combustion. The study found higher concentrations of pollutants near the city's industrial sector, validating long-standing resident concerns.
Why it matters
This research provides scientific evidence for environmental health concerns in industrial communities, potentially influencing local policy.
For decades , residents have complained about a grimy, black substance coating their properties. The perennial issue came up again in early July, when residents experienced what some described as the worst fallout in recent memory.
Sarah Styler, an associate professor of environmental chemistry at McMaster University, and Grace Yao, a PhD candidate in Styler's lab, are part of the study "What's the Grime?" that seeks to answer the titular question.
Working with volunteers to collect samples throughout the city, the researchers found the soot contains toxic chemicals consistent with coal combustion. They also found amounts of dust and polycyclic aromatic hydrocarbons (PAHs) were higher near the industrial area in northeast Hamilton.
People in several Hamilton neighbourhoods still don't know why black soot has been falling on their homes
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