Transport and Fate of Polycyclic Aromatic Hydrocarbons in Soil-Plant System PDF Download
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Author: Yanzheng Gao
Publisher:
ISBN: 9787030459558
Category :
Languages : en
Pages : 292
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Book Description
Author: Yanzheng Gao
Publisher:
ISBN: 9787030459558
Category :
Languages : en
Pages : 292
Get Book Here
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: Peter E. T. Douben
Publisher: John Wiley & Sons
ISBN: 047086429X
Category : Science
Languages : en
Pages : 404
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Book Description
Polycyclic aromatic hydrocarbons (PAHs), or polyarenes, are one of the largest and most structurally diverse class of organic molecules known. High percentages of polyarenes, representing a wide range of molecular sizes and structural types, are present in coal tars and petroleum residues. The major sources of PAHs are crude oil, coal and oil shale. The fuels produced from these fossil sources constitute the primary source of energy for the industrial nations of the world, and the petrochemicals from these raw materials are the basis of the synthetic fibre and plastics industries. PAHs are however, widespread pollutants and their impact on the environment and human health must be monitored and controlled. This book will review and assess our scientific understanding of the ecological exposure and effects PAHs have in different environments and habitats. It will accomplish this by taking the recipients of the pollution in the environment as starting points and working its way back through pathways to access what is required for our understanding of effects and rationale for control. Although this book will concentrate on ecological exposure of PAHs, the general impacts of PAHs on human populations will be touched upon. It is thought to be the first book to focus on the ecological aspects of PAHs.
Author: Anne Margaret Hoylman
Publisher:
ISBN:
Category : Plants
Languages : en
Pages : 240
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Book Description
Author:
Publisher:
ISBN:
Category : Polycyclic aromatic hydrocarbons
Languages : en
Pages : 500
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Book Description
Author: Maria Cecilia Echarte
Publisher:
ISBN: 9781109859508
Category :
Languages : en
Pages : 324
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Book Description
This research showed runoff pollution can pose a water quality management problem at the Sweetwater reservoir in terms of PAHs. As presently operated, forebay structures in the URDS do not appear effective to control these pollutants. Further studies are recommended to understand settling of PAH containing suspended solids in the forebays in order to optimize their removal from runoff.
Author:
Publisher:
ISBN:
Category : Health risk assessment
Languages : en
Pages : 28
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Book Description
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.
Author: Victor G. Kabay
Publisher:
ISBN:
Category : Phytoremediation
Languages : en
Pages :
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Book Description
Author: Bjorseth
Publisher: CRC Press
ISBN: 9780824774424
Category : Science
Languages : en
Pages : 434
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Book Description
This volume concerns sources of polycyclic aromatic hydrocarbons (PAH), their emission factors, and relative importance. It deals with exposure, uptake, metabolism, and detection of PAH in the human body. The volume contains an update of information in environmental and biochemical studies of PAH.
