The effect of emergent macrophytes on the dynamics of sulfur species and trace metals in wetland sediments

Jung Hyun Choi, Seok Soon Park, Peter R. Jaffe

Research output: Contribution to journalArticle

43 Scopus citations

Abstract

This study focuses on the effect of plants on the biogeochemistry of sulfur species and the mobility of heavy metals in wetland sediments. Results showed that, in the presence of plants, sediments had elevated sulfate concentrations in the rhizosphere during the growing season, ranging from 0.2 to 6.20 mmol L-1, whereas only a small difference in the sulfate profiles between vegetated and non-vegetated sediments was observed during senescence. Based on the sulfate concentration increase, the oxygen release rate from the roots to achieve the corresponding oxidation of sulfide was estimated as 0.85 g m -2 day-1. Evapotranspiration-induced advection is a major contributor to the transport of sulfate from the water column into the sediments, and also allows dissolved trace metals (i.e. Cd, Pb, and Zn) to be transported into the sediments and react with the acid volatile sulfide pool, resulting in the immobilization of trace metals in these sediments.

Original languageEnglish (US)
Pages (from-to)286-293
Number of pages8
JournalEnvironmental Pollution
Volume140
Issue number2
DOIs
StatePublished - Mar 1 2006

All Science Journal Classification (ASJC) codes

  • Toxicology
  • Pollution
  • Health, Toxicology and Mutagenesis

Keywords

  • Plants
  • Sulfate
  • Sulfide
  • Trace metals
  • Wetland sediments

Fingerprint Dive into the research topics of 'The effect of emergent macrophytes on the dynamics of sulfur species and trace metals in wetland sediments'. Together they form a unique fingerprint.

  • Cite this