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Characteristics and Health Risks of Trace Metals in PM<sub>2.5</sub> Before and During the Heating Period over Three Years in Shijiazhuang, China.

Toxics · 2025 · PMC12031353 · PMID 40278607

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an increasing trendno p-value reported
Concentrations of both PM 2.5 and nine selected metal elements showed an increasing trend during the heating period, indicating that control of PM 2.5 in the heating period should be imposed.

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