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

Title
The effect of emergent macrophytes on the dynamics of sulfur species and trace metals in wetland sediments
Authors
Choi J.H.Park S.S.Jaffe P.R.
Ewha Authors
박석순최정현
SCOPUS Author ID
박석순scopus; 최정현scopus
Issue Date
2006
Journal Title
Environmental Pollution
ISSN
0269-7491JCR Link
Citation
vol. 140, no. 2, pp. 286 - 293
Indexed
SCI; SCIE; SCOPUS WOS scopus
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. © 2005 Elsevier Ltd. All rights reserved.
DOI
10.1016/j.envpol.2005.07.009
Appears in Collections:
엘텍공과대학 > 환경공학전공 > Journal papers
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