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Uptake of arsenic and mercury from soil by bermudagrass Cynodon dactylon
AbstractHigh point source concentrations of As and Hg occur in soils and may constitute a hazard to animals grazing in such environments. Common bermudagrass Cynodon dactylon L. was grown on three soils amended with As and Hg singly and in combination to determine uptake and concentration of these elements in its leaves, stems and roots. Plant growth was reduced on all soils containing 90 mgkg−1 As and on two soils containing 50 mgkg−1 Hg. Concentrations of As in leaves, stems and roots of plants grown on soil containing 45 mg kg−1 As, often exceeded 15, 25 and 200 mg kg−1, respectively, on a dry weight basis. The maximum concentration of As in plant tops was 45 mg kg−1. The range in concentrations of Hg in leaves, stems and roots of plants grown on soil containing 50 mg kg−1 Hg was 1·4 to 37·6, 0·4 to 1·2 and 80 to 800 mg kg−1, respectively. The concentrations of As and Hg in bermudagrass growing on contaminated soils were high enough to be potentially hazardous to foraging animals.
Uptake of arsenic and mercury from soil by bermudagrass Cynodon dactylon
AbstractHigh point source concentrations of As and Hg occur in soils and may constitute a hazard to animals grazing in such environments. Common bermudagrass Cynodon dactylon L. was grown on three soils amended with As and Hg singly and in combination to determine uptake and concentration of these elements in its leaves, stems and roots. Plant growth was reduced on all soils containing 90 mgkg−1 As and on two soils containing 50 mgkg−1 Hg. Concentrations of As in leaves, stems and roots of plants grown on soil containing 45 mg kg−1 As, often exceeded 15, 25 and 200 mg kg−1, respectively, on a dry weight basis. The maximum concentration of As in plant tops was 45 mg kg−1. The range in concentrations of Hg in leaves, stems and roots of plants grown on soil containing 50 mg kg−1 Hg was 1·4 to 37·6, 0·4 to 1·2 and 80 to 800 mg kg−1, respectively. The concentrations of As and Hg in bermudagrass growing on contaminated soils were high enough to be potentially hazardous to foraging animals.
Uptake of arsenic and mercury from soil by bermudagrass Cynodon dactylon
Weaver, R.W. (author) / Melton, J.R. (author) / Wang, DeShin (author) / Duble, R.L. (author)
Environmental Pollution Series A: Ecological and Biological ; 33 ; 133-142
1984-01-01
10 pages
Article (Journal)
Electronic Resource
English
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