Topic
Bioaccumulation
About: Bioaccumulation is a research topic. Over the lifetime, 7112 publications have been published within this topic receiving 208953 citations. The topic is also known as: bioakumulace.
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TL;DR: Long-term low dose exposure of heavy metals may play a key role in tumorigenesis, and it may not be necessary to accumulate a high concentration of heavy metal in the human body for those metals to induce tumorsigenesis.
159 citations
TL;DR: In this paper, an analysis of covariance (ANCOVA) was used to detect spatial and temporal trends in the livers of Atlantic croaker (Micropogonias undulatus) livers.
159 citations
TL;DR: A theoretical framework is proposed that can be extended to other metals and other aquatic invertebrates to explain the variation in the relationship between bioaccumulated body concentrations and toxicity, and subsequently to predict this relationship in many other species for which the authors have bio Accumulation modelling data.
158 citations
01 Jan 2010
TL;DR: In this paper, the toxic effects of heavy metals on plant growth and their detoxification mechanisms that enable them to tolerate high levels of metals in the soil environment are discussed, and specific mechanisms by which toxic elements are excluded, retained at root level, or transformed into physiologically tolerant forms.
Abstract: Although many metal elements are essential for the growth of plants in low concentrations, their excessive amounts in soil above threshold values can result in toxicity. This detrimental effect varies with the nature of an element as well as plant species. Heavy metal toxicity in plants depends on the bioavailability of these elements in soil solution, which is a function of pH, organic matter and cation exchange capacity of the soil. Nonessential metals/metalloids such as Hg, Cd, Cr, Pb, As, and Sb are toxic both in their chemically combined or elemental forms, and plants responses to these elements vary across a broad spectrum from tolerance to toxicity. For example, the bioaccumulation of heavy metals in excessive concentrations may replace essential metals in pigments or enzymes disrupting their function and causing oxidative stress. Heavy metal toxicity hinders the growth process of the underground and aboveground plant parts and the activity of the photosynthetic apparatus, which is often correlated with progress in senescence. To avoid the toxicity, plants have developed specific mechanisms by which toxic elements are excluded, retained at root level, or transformed into physiologically tolerant forms. In this chapter, we have discussed the toxic effects of heavy metals on plant growth and their detoxification mechanisms that enable them to tolerate high levels of metals in the soil environment.
158 citations
18 Jan 2018
TL;DR: The Partition Mechanism as discussed by the authors is used in the bioaccumulation of lipophilic and hydrophobic compounds by aquatic organisms in both terrestrial and aquatic systems, as well as metallic and organometallic compounds.
Abstract: Introduction. Evaluation of the Bio-Concentration Factor, Biomagnification Factor, and Related Physicochemical Properties of Organic Compounds. General Characteristics of Organic Compounds Which Exhibit Bioaccumula-tion. Environmental Routes Leading to the Bioaccu-mulation of Lipophilic Chemicals. The Partition Mechanism. Biocon-centration of Lipophilic and Hydrophobic Compounds by Aquatic Organisms. Biomagnification of Lipophilic Compounds in Terrestrial and Aquatic Systems. Bioaccumulation of Metallic Substances and Organometallic Compounds. Achievements and Challenges in Bioaccumulation Research. Index. Highlights:
158 citations