Fate and Biohazard of Polycyclic Aromatic Hydrocarbons in Creosote-pentachlorophenol-contaminated Vadose Zone Soil PDF Download
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Author: Carolyn K. Abbott
Publisher:
ISBN:
Category : Polycyclic aromatic hydrocarbons
Languages : en
Pages : 218
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Author: Carolyn K. Abbott
Publisher:
ISBN:
Category : Polycyclic aromatic hydrocarbons
Languages : en
Pages : 218
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Author: Paul D. Epstein
Publisher:
ISBN:
Category : Soil pollution
Languages : en
Pages : 214
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Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 876
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Author: Jing Shen Gabriel
Publisher:
ISBN:
Category :
Languages : en
Pages : 282
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Author: Jochim Karl Christian Nieman
Publisher:
ISBN:
Category : Pentachlorophenol
Languages : en
Pages : 340
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Author: Angela Anne Therese Bevel
Publisher:
ISBN:
Category :
Languages : en
Pages : 452
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 134
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Under laboratory conditions selected to maximize root uptake, plant tissue distribution of PAH-derived 14C was largely limited to root tissue of Malilotus alba. These results suggest that plant uptake of PAHs from contaminated soil via roots, and translocation to aboveground plant tissues (stems and leaves), is a limited mechanism for transport into terrestrial food chains. However, these data also indicate that root surface sorption of PAHs may be important for plants grown in soils containing elevated concentration PAHs. Root surface sorption of PAHs may be an important route of exposure for plants in soils containing elevated concentrations of PAHS. Consequently, the root-soil interface may be the site of plant-microbial interactions in response to a chemical stress. In this study, evidence of a shift in carbon allocation to the root zone of plants exposed to phenanthrene and corresponding increases in soil respiration and heterotrophic plate counts provide evidence of a plant-microbial response to a chemical stress. The results of this study establish the importance of the root-soil interface for plants growing in PAH contaminated soil and indicate the existence of plant-microbial interactions in response to a chemical stress. These results may provide new avenues of inquiry for studies of plant toxicology, plant-microbial interactions in the rhizosphere, and environmental fates of soil contaminants. In addition, the utilization of plants to enhance the biodegradation of soil contaminants may require evaluation of plant physiological changes and plant shifts in resource allocation.
Author: Anne Margaret Hoylman
Publisher:
ISBN:
Category : Plants
Languages : en
Pages : 240
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Author: Saleem Abdul Mohammed
Publisher:
ISBN:
Category : Pentachlorophenol
Languages : en
Pages : 202
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Author: Kimberly Wallace Walker
Publisher:
ISBN:
Category : Forestry products industry
Languages : en
Pages : 160
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