Occupational hazard to on-road air pollution within passenger transport micro-environments: evidence from traffic congested areas in Colombo, Sri Lanka.

BMC Public Health · 2025 · PMC12220120 · PMID 40604542

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an increasing trendno p-value reported

This indicates an increasing trend in air pollution particularly in densely populated districts like Colombo in Sri Lanka, where annual ambient PM 10 levels consistently surpass the WHO, United States Environmental Protection Agency (USEPA) and Sri Lankan Guideline values [ 28 ].

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