Trace metal concentrations in tropical mangrove sediments, NE Brazil

Mar Pollut Bull. 2016 Jan 15;102(1):206-9. doi: 10.1016/j.marpolbul.2015.11.039. Epub 2015 Nov 20.

Abstract

Sediment cores were taken from the mangroves of the Coreaú River estuary off the northeast coast of Brazil. They were analyzed for grain size, CaCO3, organic matter, and trace metal (Cd, Pb, Zn, Cu, Al, and Fe) contents. Mud texture was the predominant texture. Levels of trace metals in surface sediments indicated strong influence of anthropogenic processes, and diagenetic processes controlled the trace metal enrichment of core sediments of this estuary. The positive relationships between trace metals and Al and Fe indicate that Cu, Zn, Pb, and Cd concentrations are associated mainly with Al and Fe oxy-hydroxides and have natural sources.

Keywords: Core sediments; Mangroves; Northeast coast of Brazil; Trace metals.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Aluminum / analysis
  • Aluminum / chemistry
  • Brazil
  • Calcium Carbonate / analysis
  • Calcium Carbonate / chemistry
  • Environmental Monitoring*
  • Estuaries*
  • Geologic Sediments / chemistry*
  • Iron / analysis
  • Iron / chemistry
  • Metals, Heavy / analysis*
  • Metals, Heavy / chemistry
  • Rivers / chemistry
  • Tropical Climate
  • Water Pollutants, Chemical / analysis*
  • Water Pollutants, Chemical / chemistry
  • Wetlands

Substances

  • Metals, Heavy
  • Water Pollutants, Chemical
  • Aluminum
  • Iron
  • Calcium Carbonate