Historical change, ecological risk, and source analysis of heavy metal and metalloid in sediments of the Bohai Sea and adjacent seas over the past century.

Heavy metal pollution poses a significant challenge to marine ecosystems, yet long-term and spatially resolved assessments remain limited. This study reconstructed historical trends of metals (Cu, Zn, Pb, Cr, Cd, As, and Ni) in the Bohai Sea and adja…

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