Trace Metal Partitioning in Freshwater as a Function of Environmental Variables and Its Implications for Metal Bioavailability PDF Download
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Author: Davide Vignati
Publisher:
ISBN:
Category : Metals
Languages : en
Pages : 326
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Book Description
Author: Davide Vignati
Publisher:
ISBN:
Category : Metals
Languages : en
Pages : 326
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
La répartition des métaux traces (Al, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, As, Mo, Cd, Sb, Pb et U) entre la matière en suspension (MES), les colloïdes et la vraie solution a été étudiée dans des milieux aquatiques contrastés (rivières, lacs, réservoirs). En général, Al, Ti et Pb montrent une forte affinité pour la MES et les colloïdes ; tandis que As, Mo, Sb, et U sont normalement transportés dans la vraie solution. Par contre, la distribution des autres éléments dans les trois phases dépend des paramètres environnementaux (pH, force ionique, géologie du bassin) et peut être expliquée seulement en partie par l'association des métaux avec les colloïdes. Cette étude souligne donc l'importance de connaître les paramètres caractéristiques de chaque système, qui sont par ailleurs difficilement reproductibles dans le laboratoire, pour modéliser la répartition des métaux traces dans des conditions naturelles.
Author: Alina Kabata-Pendias
Publisher: Springer Science & Business Media
ISBN: 3540327134
Category : Health & Fitness
Languages : en
Pages : 561
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Book Description
The quality of food is such a live issue at the moment that this title is an essential tool for researchers in a variety of disciplines. It provides a review of the key features of trace elements in soils, plants and the food web on which human beings survive. The authors' intention is to summarize up-to-date interdisciplinary data for the concise presentation of our understanding of trace-element transfer in the chain from soil to man.
Author: John F. Elder
Publisher:
ISBN:
Category : Biogeochemistry
Languages : en
Pages : 52
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Book Description
Author: Montserrat Filella
Publisher: Walter de Gruyter GmbH & Co KG
ISBN: 3110668718
Category : Science
Languages : en
Pages : 396
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Book Description
Antimony (Sb) is an exciting chemical element ubiquitously present in our daily lives. This book provides a coherent and interdisciplinary picture of our current understanding of this element. Subjects ranging from its mineralogy, mining and environmental chemistry to its potential impact in ecosystems and human health are discussed in this monograph.
Author: Monzer Fanun
Publisher: Elsevier
ISBN: 0444632840
Category : Science
Languages : en
Pages : 715
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Book Description
The Role of Colloidal Systems in Environmental Protection describes the importance of colloids in many applications that contribute to environmental protection, including drinking water and wastewater treatment, heavy metal remediation, treatment of radioactive materials, corrosion, and energy conversion. Knowledge of the physical and chemical composition of colloids is important to understand and accurately model the relevant processes. The book familiarizes the reader with the technological features of the application of colloids in environmental protection, and provides chemical engineers, researchers, and scientists in academic and corporate communities with the latest developments in this field. Each chapter covers the whole spectrum of the relevant science, from the fundamentals to applications. Provides the applied technological features of colloids in environmental protection Gives insight into the use of bio-solid colloids as contaminant carriers Covers the natural occurrence of biosurfactants in the environment and their applications Provides information on the use of nanoparticles for environmental applications Chapters written by recognized and respected experts in the field from all over the world
Author: Stewart M. Oakley
Publisher:
ISBN:
Category : Biogeochemistry
Languages : en
Pages : 84
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Book Description
Author: Robert P. Mason
Publisher: John Wiley & Sons
ISBN: 111827458X
Category : Science
Languages : en
Pages : 450
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Book Description
This book provides a detailed examination of the concentration, form and cycling of trace metals and metalloids through the aquatic biosphere, and has sections dealing with the atmosphere, the ocean, lakes and rivers. It discusses exchanges at the water interface (air/water and sediment/water) and the major drivers of the cycling, concentration and form of trace metals in aquatic systems. The initial chapters focus on the fundamental principles and modelling approaches needed to understand metal concentration, speciation and fate in the aquatic environment, while the later chapters focus on specific environments, with case studies and research highlights. Specific examples deal with metals that are of particular scientific interest, such as mercury, iron, arsenic and zinc, and the book deals with both pollutant and required (nutrient) metals and metalloids. The underlying chemical principles controlling toxicity and bioavailability of these elements to microorganisms and to the aquatic food chain are also discussed. Readership: Graduate students studying environmental chemistry and related topics, as well as scientists and managers interested in the cycling of trace substances in aqueous systems Additional resources for this book can be found at: www.wiley.com/go/mason/tracemetals.
Author: O. T. Zajicek
Publisher:
ISBN:
Category : Acid pollution of rivers, lakes, etc
Languages : en
Pages : 38
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Book Description
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309086256
Category : Technology & Engineering
Languages : en
Pages : 433
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Book Description
Bioavailability refers to the extent to which humans and ecological receptors are exposed to contaminants in soil or sediment. The concept of bioavailability has recently piqued the interest of the hazardous waste industry as an important consideration in deciding how much waste to clean up. The rationale is that if contaminants in soil and sediment are not bioavailable, then more contaminant mass can be left in place without creating additional risk. A new NRC report notes that the potential for the consideration of bioavailability to influence decision-making is greatest where certain chemical, environmental, and regulatory factors align. The current use of bioavailability in risk assessment and hazardous waste cleanup regulations is demystified, and acceptable tools and models for bioavailability assessment are discussed and ranked according to seven criteria. Finally, the intimate link between bioavailability and bioremediation is explored. The report concludes with suggestions for moving bioavailability forward in the regulatory arena for both soil and sediment cleanup.
