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September 10, 2025Frontiers in Public HealthOpen Access

Environmental surveillance of the health risk of PM2.5-bound metals and metalloids in Wuxi, China, from 2020 to 2023

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Monitoring PM2.5-bound metals reveals pollution trends in Wuxi, indicating anthropogenic sources significantly contribute to health risks.

Pollution characteristics of PM2.5-bound metals indicated a decline, with dominant elements being Fe, Al, Zn, Mn, Pb, Cu, and Ba.
The total concentration of metals averaged 659.7 ± 318.5 ng/m3, with PM2.5 mass concentrations ranging from 5.00 to 166.0 μg/m3.
Enrichment factor analysis confirmed that most metals originated from anthropogenic pollution sources, including industrial emissions.
Health risk assessments showed all metal hazard quotients were below 1, although long-term exposure to Mn, As, and Cr(VI) requires attention.

Chen et al. (2025) studied this question.

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Monitoring PM2.5-bound metals reveals pollution trends in Wuxi, indicating anthropogenic sources significantly contribute to health risks.