Bioavailability of mercury in contaminated soils assessed by the diffusive gradient in thin film technique in relation to uptake by Miscanthus × giganteus
Language English Country England, Great Britain Media print-electronic
Document type Journal Article, Research Support, Non-U.S. Gov't
PubMed
30620786
DOI
10.1002/etc.4318
Knihovny.cz E-resources
- Keywords
- Contaminated soils, Diffusive gradient in thin film technique, Mercury, Phytoavailability, Speciation analysis,
- MeSH
- Biological Availability MeSH
- Models, Biological MeSH
- Biological Transport MeSH
- Ion Exchange Resins chemistry MeSH
- Soil Pollutants analysis metabolism MeSH
- Poaceae metabolism MeSH
- Environmental Monitoring methods MeSH
- Soil chemistry MeSH
- Mercury analysis metabolism MeSH
- Chromatography, High Pressure Liquid MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
- Names of Substances
- Ion Exchange Resins MeSH
- Soil Pollutants MeSH
- Soil MeSH
- Mercury MeSH
We assessed the relationship between the diffusive gradient in thin film (DGT) technique using the new ion-exchange resin Ambersep GT74 and the uptake of mercury (Hg) by a model plant cultivated on metal-contaminated agricultural soils under greenhouse conditions. Based on the total Hg content, 0.37 to 1.17% of the Hg passed to the soil porewater from the solid phase, and 2.18 to 9.18% of the Hg is DGT-available. These results were confirmed by calculating the R value (the ratio of the concentrations of bioavailable Hg measured by DGT and soil solution), which illustrated the strong bonding of Hg to the solid phase of soil and its extremely low mobility. Only inorganic Hg2+ species were found in the metal-contaminated agricultural soils, as determined by a high-performance liquid chromatography-cold vapor atomic fluorescence spectrometry speciation analysis. The Hg was distributed in Miscanthus × giganteus organs in the following order for all sampling sites: roots (55-82%) >> leaves (8-27%) > stems (7-16%) > rhizomes (4-7%). Environ Toxicol Chem 2019;38:321-328. © 2018 SETAC.
Central European Institute of Technology University of Technology Brno Czech Republic
Department of Chemistry and Biochemistry Mendel University in Brno Brno Czech Republic
Laboratoire de Génie Civil et géoEnvironnement ISA Lille Yncréa Hauts de France Lille France
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