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Evaluation of mercury bioavailability and phytoaccumulation by means of a DGT technique and of submerged aquatic plants in an aquatic ecosystem situated in the vicinity of a cinnabar mine
- Source :
- Chemosphere. 288(Pt 2)
- Publication Year :
- 2021
-
Abstract
- The ability of submerged aquatic plants (Elodea canadensis, Myriophyllum spicatum, Ceratophyllum demersum) and a natant plant (Eichhornia crassipes) to bioaccumulate mercury was evaluated in a laboratory experiment as well as in a real aquatic ecosystem situated in the vicinity of a cinnabar mine. Moreover, the ability of the diffusive gradients in the thin films technique (DGT) to predict mercury bioavailability for selected aquatic plants was tested. The submerged plants had sufficient bioaccumulation capacity for long-term phytoaccumulation of mercury in a real aquatic ecosystem. The determined bioaccumulation factor was greater than 1000. On average, the submerged plant leaves accumulated 13 times more mercury than the leaves of the natant aquatic plants. Chlorides at concentrations up to 200 mg/L had no statistically significant effect on mercury accumulation, nevertheless, the presence of humic acid in the water environment resulted in its significant (p 0.002) decrease. A strong positive correlation (r 0.66) was determined between mercury concentration in the input parts (leaves and/or roots) of the aquatic plants and the flow of mercury into DGT units.
- Subjects :
- Environmental Engineering
Health, Toxicology and Mutagenesis
Elodea canadensis
chemistry.chemical_element
Biological Availability
Bioconcentration
Aquatic plant
Water environment
Environmental Chemistry
Ecosystem
biology
Mercury Compounds
Aquatic ecosystem
fungi
Public Health, Environmental and Occupational Health
food and beverages
General Medicine
General Chemistry
Ceratophyllum demersum
Mercury
biology.organism_classification
Pollution
Mercury (element)
chemistry
Environmental chemistry
Bioaccumulation
Environmental science
Subjects
Details
- ISSN :
- 18791298
- Volume :
- 288
- Issue :
- Pt 2
- Database :
- OpenAIRE
- Journal :
- Chemosphere
- Accession number :
- edsair.doi.dedup.....3efdba14e179fe115608257127daa2b2