Lead accumulation and association with Fe on Typha latifolia root from an urban brownfield site

Environ Sci Pollut Res Int. 2013 Jun;20(6):3743-50. doi: 10.1007/s11356-012-1298-x. Epub 2012 Nov 17.

Abstract

Synchrotron X-ray microfluorescence and X-ray absorption near-edge microstructure spectroscopy techniques were applied to Typha latifolia (cattail) root sections and rhizosphere soils collected from a brownfield site in New Jersey to investigate lead (Pb) accumulation in T. latifolia roots and the role of iron (Fe) plaque in controlling Pb uptake. We found that Pb and Fe spatial distribution patterns in the root tissues are similar with both metals present at high concentrations mainly in the epidermis and at low concentrations in the vascular tissue (xylem and phloem), and the major Pb and Fe species in T. latifolia root are Pb(II) and Fe(III) regardless of concentration levels. The sequestration of Pb by T. latifolia roots suggests a potential low-cost remediation method (phytostabilization) to manage Pb-contaminated sediments for brownfield remediation while performing wetland rehabilitation.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Biodegradation, Environmental
  • Iron / analysis*
  • Lead / analysis*
  • New Jersey
  • Plant Epidermis / chemistry
  • Plant Roots / chemistry*
  • Soil / chemistry
  • Soil Pollutants / chemistry*
  • Typhaceae / chemistry*
  • Wetlands
  • X-Ray Absorption Spectroscopy

Substances

  • Soil
  • Soil Pollutants
  • Lead
  • Iron