Comparison of Heavy Metal Pollution, Health Risk, and Sources Between Surface and Deep Layers for an Agricultural Region Within the Pearl River Delta: Implications for Soil Environmental Research.

Toxics · 2025 · PMC12300138 · PMID 40710993

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Almost all surface soils within the study area presented potential strong ecological risk due to moderate heavy metal pollution, with an increasing trend from the northern to southern regions ( Figure 4 a).

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