Narrow your search
Listing 1 - 5 of 5
Sort by

Dissertation
Étude comparative de différentes méthodes de mesure de la biodisponibilité des ETM dans le sol et modélisation de l'accumulation dans la plante
Authors: --- --- --- --- --- et al.
Year: 2019 Publisher: Liège Université de Liège (ULiège)

Loading...
Export citation

Choose an application

Bookmark

Abstract

La biodisponibilité, concept clé et pourtant encore mal compris par la communauté scientifique,
est au coeur de nombreuses recherches actuelles. Ce travail de fin d’études a pour objectif de
progresser dans la compréhension de la biodisponibilité des éléments traces métalliques et de
comparer différentes méthodes pour la mesurer. Les techniques utilisées sont les extractions
chimiques, la DGT et le RHIZOtest. L’analyse comparative a été mise en place sur 15 sols
présentant un large gradient de pollution en Cd, Cu, Pb et Zn. L’évaluation des mesures a
notamment été effectuée sur base de modèles de prédiction de la biodisponibilité des ETM dans
le chou cabus. Les résultats montrent une grande variabilité de la biodisponibilité selon la
mesure, l’ETM et les propriétés du sol. Le meilleur indicateur de la biodisponibilité varie selon
l’ETM étudié. Les modèles d’ajustement de la biodisponibilité donnent de bonnes prédictions
en comparaison à la plupart des essais de modélisation présents dans la littérature. Ces résultats restent cependant insuffisants. La modélisation de la biodisponibilité indique également que les caractéristiques physico-chimiques permettent d’améliorer significativement les prédictions. Finalement, ce travail conclut sur l’incapacité des outils RHIZOtest et DGT à apporter une plus value évidente pour la mesure de la biodisponibilité.


Book
Soil Contamination by Heavy Metals and Metalloids
Author:
Year: 2022 Publisher: Basel MDPI - Multidisciplinary Digital Publishing Institute

Loading...
Export citation

Choose an application

Bookmark

Abstract

Soil contamination has been identified as one of the main threats to soil, inducing the degradation of global soils and driving long-term losses of the ecosystem services that they provide. As a result of human activities, the amount of soil contamination caused by heavy metal(loid)s has severely increased over the last few decades and has become a worldwide environmental issue that has attracted considerable public attention. Although many research efforts have highlighted how soil contamination is a global threat and provided an overview of the importance of healthy soil, there is still a great need for additional information from different regions around the world, and concrete strategies, which can be implemented to address the causes and impacts of this major threat, urgently need to be developed. In this context, this book was launched with the scope of bringing together articles presenting the development of novel science-based methods and applications that enhance the remediation of contaminated soil by focusing on the identification of the main sources of soil contamination caused by heavy metal(loid)s (HM)/potentially toxic elements (PTEs) in different soil types; the chemistry, potential mobility, and bioavailability of the contaminants that are commonly found in contaminated soils; the assessment of the negative impacts and risks associated with HM/PTE-induced soil contamination on crop yields; soil biota, food security, and human health; and the available methods and strategies for monitoring, assessing, and remediating soils that have been contaminated by HM/PTEs.


Book
Soil Contamination by Heavy Metals and Metalloids
Author:
Year: 2022 Publisher: Basel MDPI - Multidisciplinary Digital Publishing Institute

Loading...
Export citation

Choose an application

Bookmark

Abstract

Soil contamination has been identified as one of the main threats to soil, inducing the degradation of global soils and driving long-term losses of the ecosystem services that they provide. As a result of human activities, the amount of soil contamination caused by heavy metal(loid)s has severely increased over the last few decades and has become a worldwide environmental issue that has attracted considerable public attention. Although many research efforts have highlighted how soil contamination is a global threat and provided an overview of the importance of healthy soil, there is still a great need for additional information from different regions around the world, and concrete strategies, which can be implemented to address the causes and impacts of this major threat, urgently need to be developed. In this context, this book was launched with the scope of bringing together articles presenting the development of novel science-based methods and applications that enhance the remediation of contaminated soil by focusing on the identification of the main sources of soil contamination caused by heavy metal(loid)s (HM)/potentially toxic elements (PTEs) in different soil types; the chemistry, potential mobility, and bioavailability of the contaminants that are commonly found in contaminated soils; the assessment of the negative impacts and risks associated with HM/PTE-induced soil contamination on crop yields; soil biota, food security, and human health; and the available methods and strategies for monitoring, assessing, and remediating soils that have been contaminated by HM/PTEs.


Book
Soil Contamination by Heavy Metals and Metalloids
Author:
Year: 2022 Publisher: Basel MDPI - Multidisciplinary Digital Publishing Institute

Loading...
Export citation

Choose an application

Bookmark

Abstract

Soil contamination has been identified as one of the main threats to soil, inducing the degradation of global soils and driving long-term losses of the ecosystem services that they provide. As a result of human activities, the amount of soil contamination caused by heavy metal(loid)s has severely increased over the last few decades and has become a worldwide environmental issue that has attracted considerable public attention. Although many research efforts have highlighted how soil contamination is a global threat and provided an overview of the importance of healthy soil, there is still a great need for additional information from different regions around the world, and concrete strategies, which can be implemented to address the causes and impacts of this major threat, urgently need to be developed. In this context, this book was launched with the scope of bringing together articles presenting the development of novel science-based methods and applications that enhance the remediation of contaminated soil by focusing on the identification of the main sources of soil contamination caused by heavy metal(loid)s (HM)/potentially toxic elements (PTEs) in different soil types; the chemistry, potential mobility, and bioavailability of the contaminants that are commonly found in contaminated soils; the assessment of the negative impacts and risks associated with HM/PTE-induced soil contamination on crop yields; soil biota, food security, and human health; and the available methods and strategies for monitoring, assessing, and remediating soils that have been contaminated by HM/PTEs.


Book
Personne ne sort les fusils
Author:
ISBN: 9782021456554 2021456552 Year: 2020 Publisher: Paris : Seuil,

Loading...
Export citation

Choose an application

Bookmark

Abstract

De mai à juillet 2019 se tient le procès France Télécom - Orange. Sept dirigeants sont accusés d'avoir organisé la maltraitance de leurs salariés. Parfois jusqu'à la mort. On les interroge longuement, leur fait expliquer beaucoup. Rien à faire : ils ne voient pas le problème. Le P-DG a un seul regret : " Cette histoire de suicides, c'est terrible, ils ont gâché la fête. " Il y avait donc une fête ? Parlons-nous la même langue ?

Listing 1 - 5 of 5
Sort by