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: Fifteen metals have been investigated using inductively coupled plasma-atomic emission spectrometry (ICP-AES) on 92 specimens of mushrooms collected in France, in the Paris region, revealing that different mechanisms are involved depending on fungi species and genera besides physicochemical influences.
115 citations
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TL;DR: A review of the literature on metal bioaccumulation versus sediment metal/AVS relationships can be found in this article, where the authors examine the tenet that acid-volatile sulfide (AVS) controls metal bioavailability.
Abstract: Recent studies have demonstrated that the toxicity of divalent cationic metals (cadmium, copper, lead, nickel, and zinc) in sediments can be controlled through binding to acid-volatile sulfide (AVS). When the molar concentration of AVS exceeds that of the metals (i.e., the metal/AVS ratio is less than unity), they exist predominantly as insoluble metal sulfides, which presumably are not biologically available. Thus, at metal/AVS ratios less than 1, toxicity of sediment-associated metals to benthic macroin-vertebrates has not been observed. However, bioaccumulation may provide a more direct assessment of contaminant bioavailability than the presence or absence of toxicity. The purpose of this report is to comprehensively review available literature on metal bioaccumulation versus sediment metal/AVS relationships to further examine the tenet that AVS controls metal bioavailability. In all, 12 studies were evaluated; these ranged from short-term (10-d) laboratory experiments with metal-spiked or field-collected sediments containing cadmium, copper, lead, nickel, and/or zinc to long-term (> 1-year) field studies with sediments spiked with cadmium or zinc. Test organisms included mollusks, oligochaetes, polychaetes, amphipods, and midges. The preponderance of studies indicated reduced accumulation of metals at sediment metal/AVS ratios of less than 1. However, there were exceptions to this general observation, two of which occurred in short-term laboratory experiments with cadmium- or nickel-spiked sediments. In these studies there appeared to be a linear accumulation of metals with increasing sediment metal concentrations irrespective of the metal/AVS ratio. Although there is experimental evidence suggesting that significant bioaccumulation of metals does not occur when there is sufficient AVS available to bind them, the existence of at least some data to the contrary indicates the need for further research relative to factors controlling the bioaccumulation of metals from sediments.
114 citations
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TL;DR: An in situ toxicity and bioaccumulation assessment approach is described to assess stressor exposure and effects in surface waters, the sediment-water interface, surficial sediments and pore waters (including groundwater upwellings).
114 citations
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TL;DR: Interaction between selenium and mercury in aquatic organisms is real but the true antagonism between these two elements has not yet been clearly shown.
114 citations
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TL;DR: The calculated BAFs forDBDPE indicated that this compound can significantly accumulate in fish, which can partly attributed to the absence of debromination of DBDPE in fish.
113 citations