Fate of Polycyclic Aromatic Hydrocarbons in Plant-soil Systems PDF Download
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Author: Anne Margaret Hoylman
Publisher:
ISBN:
Category : Plants
Languages : en
Pages : 240
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Book Description
Author: Anne Margaret Hoylman
Publisher:
ISBN:
Category : Plants
Languages : en
Pages : 240
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 134
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Book Description
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: Yanzheng Gao
Publisher:
ISBN: 9787030459558
Category :
Languages : en
Pages : 292
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Book Description
Author: Victor G. Kabay
Publisher:
ISBN:
Category : Phytoremediation
Languages : en
Pages :
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Book Description
Author: Lawrence B. Ebert
Publisher:
ISBN:
Category : Language Arts & Disciplines
Languages : en
Pages : 258
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Book Description
Presents accounts of current research in polynuclear aromatic compounds, showing examples of studies both of pure compounds and of complex, fossil fuel related mixtures. Offers a thorough knowledge of aromatic chemistry through coverage of reduction, oxidation, and thermal reactions--including applications developed for both coal and petroleum materials. Featured topics include quantum chemical structure-reactivity relationships, spatial configurations of large polynuclear hydrocarbons, cyclophanes, and desulfurization of heterocycles. Scientists studying all aspects of the chemistry of polynuclear aromatics will discover important, pertinent information in this volume.
Author: Kapsong Park
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 308
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Book Description
Author:
Publisher:
ISBN:
Category : Polycyclic aromatic hydrocarbons
Languages : en
Pages : 500
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Book Description
Author: Park K.
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Biodegradation of fourteen polycyclic aromatic hydrocarbon (PAH) compounds in two soils was studied by measuring parent compound disappearance and volatilization emission losses of these compounds from soil samples. Degradation kinetic rates using a first order model were calculated as half lives. Mean degradation half lives corrected for volatilization were approximately two days for two ring PAHs including naphthalene and 1-methylnaphthlene. Half life values for non-volatile PAHs increased from 59 days for three ring PAHs (anthracene and phenanthrene) to more than 300 days for PAH compounds containing more than three rings. Volatilization corrected degradation of two and three ring PAH compounds in soil samples poisoned by 2% HgCl2 was small but significant (p
Author: J. Kielhorn
Publisher: Environmental Health Criteria
ISBN:
Category : Medical
Languages : en
Pages : 526
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Book Description
The Environmental Health Criteria Programme (EHC) evaluates information on the relationship between exposure to environmental pollutants and human health, in order to establish guidelines for setting exposure limits. This publication focuses on the risks posed by exposures to selected nitro-and nitro-oxy-polycyclic aromatic hydrocarbons (nitroPAHs). These are derivaties of polycyclic aromatic hydrocarbons (PAHS) which contain two or more fused aromatic rings made of carbon and hydrogen atoms.
Author: Nicolas Flipo
Publisher: Springer Nature
ISBN: 3030542602
Category : Science
Languages : en
Pages : 430
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Book Description
This open access book reviews the water-agro-food and socio-eco-system of the Seine River basin (76,000 km2), and offers a historical perspective on the river’s long-term contamination. The Seine basin is inhabited by circa 17 million people and is impacted by intensive agricultural practices and industrial activities. These pressures have gradually affected its hydrological, chemical and ecological functioning, leading to a maximum chemical degradation between the 1960s and the 1990s. Over the last three decades, while major water-quality improvements have been observed, new issues (e.g. endocrine disruptors, microplastics) have also emerged. The state of the Seine River network, from the headwaters to estuary, is increasingly controlled by the balance between pressures and social responses. This socio-ecosystem provides a unique example of the functioning of a territory under heavy anthropogenic pressure during the Anthropocene era. The achievements made were possible due to the long-term PIREN Seine research program, established in 1989 and today part of the French socio-ecological research network “Zones Ateliers”, itself part of the international Long-term Socio-economic and Ecological Research Network (LTSER). Written by experts in the field, the book provides an introduction to the water budget and the territorial metabolism of the Seine basin, and studies the trajectories and impact of various pollutants in the Seine River. It offers insights into the ecological functioning, the integration of agricultural practices, the analysis of aquatic organic matter, and the evolution of fish assemblages in the Seine basin, and also presents research perspectives and approaches to improve the water quality of the Seine River. Given its scope, it will appeal to environmental managers, scientists and policymakers interested in the long-term contamination of the Seine River.
