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: The environmental metabolomics approach demonstrated its effectiveness in the evaluation of Hg toxicity mechanisms in wild fish under realistic environmental conditions, uncovering tissue-specificities regarding Hg toxic effects namely in gills and liver.
80 citations
TL;DR: Levels of zinc, manganese, cobalt, selenium, copper, molybdenum, chromium, iron, aluminium, lead and cadmium were determined in plant organs (buds, flowers, fruits, seeds, leaves, stems, roots, cobs, styles, shaft, grains and efflorescences) and underlying soils of three Fadama farms located in Ifaki-Ekiti, Ado Ekiti and Ikere-EKiti of Ekiti State, Nigeria at 0-15 cm topsoil
Abstract: Levels of zinc, manganese, cobalt, selenium, copper, molybdenum, chromium, iron, aluminium, lead and cadmium were determined in plant organs (buds, flowers, fruits, seeds, leaves, stems, roots, cobs, styles, shaft, grains and efflorescences) and underlying soils of three Fadama farms located in Ifaki-Ekiti, Ado-Ekiti and Ikere-Ekiti of Ekiti State, Nigeria at 0–15 cm topsoil level. The pH levels were alkaline (7.0±0.3 – 8.1±0.7) while the soil texture ranged between loamy sand and sandy loam. There was similarity in Zn trend as was observed in Mn, Fe and Cu but they were of lower levels than Zn. Only Zn and Fe were mostly concentrated in the plant organs with Mn in very few plants. The index of bioaccumulation (ratio in plant/soil) were recorded for only Zn and Fe with the degree of accumulation ranging from medium to intensive (0.87–1.34) in Fe but only intensive (1.41–4.42) in Zn.
KEY WORDS : Trace metals, Soils, Plant organs, Bioaccumulation
Bull. Chem. Soc. Ethiop. 2005, 19(1), 23-34.
80 citations
TL;DR: The shore crab Carcinus maenas was used as a biomonitoring organism to measure the potential impact that the mining spill in the Guadalquivir Estuary in 1998 may have exerted on local biota.
80 citations
TL;DR: In this paper, the Biotic Ligand Model (BLM) was used to predict toxicity of metal mixtures in Hyalella azteca, based on metal concentrations in either water or tissues.
Abstract: Bioaccumulation of metals in mixtures may demonstrate competitive, anticompetitive, or non-competitive inhibition, as well as various combinations of these and/or enhancement of metal uptake. These can be distinguished by plotting (metal in water)/(metal in tissue) against metal in water and comparison to equivalent plots for single-metal exposure. For the special case of pure competitive inhibition where only one site of uptake is involved, inhibition of metal accumulation in any metal mixture can be predicted from bioaccumulation of the metals when present singly. This is consistent with the commonly used Biotic Ligand Model (BLM) but does not explain bioaccumulation of metals in Hyalella azteca. Options for modelling toxicity of metal mixtures include concentration or response addition based on metal concentrations in either water or tissues. If the site of toxic action is on the surface of the organism, if this is the same as the site of metal interaction for bioaccumulation, if there is only...
80 citations
TL;DR: Bioaccumulation of phenanthrene in E. fetida caused concentration-dependent, sub-lethal toxicity, and growth and superoxide dismutase activity can be regarded as sensitive parameters for evaluating the toxicity of Phenanthrene to earthworms.
80 citations