The distribution and speciation of trace metals in surface sediments from the Pearl River Estuary and the Daya Bay, Southern China

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Original languageEnglish
Pages (from-to)1364-1371
Journal / PublicationMarine Pollution Bulletin
Issue number8
Online published8 Jun 2010
Publication statusPublished - Aug 2010
Externally publishedYes


Surface sediments collected from the Pearl River Estuary (PRE) and the Daya Bay (DYB) were analyzed for total metal concentrations and chemical phase partitioning. The total concentrations of Cr, Cu, Ni, Pb, and Zn in the PRE were obviously higher than those in DYB. The maximum concentrations of trace metals in DYB occurred in the four sub-basins, especially in Dapeng Cove, while the concentrations of these metals in the western side of the PRE were higher than those in the east side. Such distribution pattern was primarily due to the different hydraulic conditions and inputs of anthropogenic trace metals. The chemical partitioning of metals analyzed by the BCR sequential extraction method showed that Cr, Ni, and Zn of both areas were present dominantly in the residual fraction, while Pb was found mostly in the non-residual fractions. The partitioning of Cu showed a significant difference between the two areas. © 2010 Elsevier Ltd.

Research Area(s)

  • Daya Bay, Pearl River Estuary, Sediment, Sequential extraction, Trace metal