Arsenic (V) bioconcentration kinetics in freshwater macroinvertebrates and periphyton is influenced by pH

Lopez, Adeline R.; Funk, David H.; Buchwalter, David B.

doi:10.1016/j.envpol.2016.12.066

Cited by 19 publications

(11 citation statements)

References 41 publications

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“…Although species composition is known to evolve rapidly over time and in the presence of stressors, biofilms have been shown to provide a robust signal in terms of metal accumulation [19]. Biofilms also provide the advantage of being present in the surface waters (streams, rivers, or lakes) of even the most contaminated ecosystems, where they have been shown to respond to a large array of both organic and inorganic contaminants [20][21][22][23]. Biomonitoring can also offer additional information than water sampling techniques alone.…”

Section: Introductionmentioning

confidence: 99%

Proton Competition and Free Ion Activities Drive Cadmium, Copper, and Nickel Accumulation in River Biofilms in a Nordic Ecosystem

2020

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Biofilms can be used as a biomonitoring tool to determine metal bioavailability in streams affected by mining and other anthropogenic activities. Surface water and biofilm were sampled over two years from rivers located in the vicinity of a mine located in a Nordic ecosystem (Nunavik, Quebec). Biofilm metal content (Cd, Cu, and Ni) as well as a variety of physicochemical properties were determined to examine relationships between metal accumulation and water quality. Among the three metals of interest, copper and nickel had the highest levels of accumulation and cadmium had the lowest. When considering the exposure levels, nickel was the most abundant metal in our sampling sites. Both exposure and accumulation levels were consistent over time. Biofilm metal content was highly correlated to the ambient free metal ion concentration for sites of circumneutral pHs for all three metals. When the surface water pH was below 6, biofilm metal content was much lower than at other sites with similar aqueous metal concentrations of exposure. This apparent protective effect of decreasing pH can be explained by proton competition with dissolved metals for uptake binding sites at the surface of the organisms within the biofilm as described by the Biotic Ligand Model principles. The relationships obtained for Cd and Cu were overlapping those observed in previous publications, indicating strong similarities in metal accumulation processes in biofilms over very large geographical areas. Although more data are needed for Ni, our results show that biofilms represent a promising metal biomonitoring tool.

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Section: Introductionmentioning

confidence: 99%

Proton Competition and Free Ion Activities Drive Cadmium, Copper, and Nickel Accumulation in River Biofilms in a Nordic Ecosystem

2020

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“…Lifecycle rearing experiments with As-treated periphyton [11] suggest that N. triangulifer is a poor As accumulator, with larval As concentrations likely driven by gut contents. Additional research has shown that efflux of As in a variety of aquatic taxa is quite rapid, which may also account for the lack of accumulation in N. triangulifer [24]. In our experiment, 13 Figure 2.…”

Section: Mayfly Acquisition Of Trace Elements From Periphytonmentioning

confidence: 57%

Periphyton uptake and trophic transfer of coal fly‐ash–derived trace elements

Scheibener

Rivera

Hesterberg

et al. 2017

Enviro Toxic and Chemistry

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To determine whether the bioavailability of trace elements derived from coal ash leachates varies with the geochemical conditions associated with their formation, we quantified periphyton bioaccumulation and subsequent trophic transfer to the mayfly Neocloeon triangulifer. Oxic ash incubations favored periphyton uptake of arsenic, selenium, strontium, and manganese, whereas anoxic incubations favored periphyton uptake of uranium. Mayfly enrichment was strongest for selenium, whereas biodilution was observed for strontium, uranium, and arsenic. Environ Toxicol Chem 2017;36:2991-2996. © 2017 SETAC.

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“…Arsenic may also be introduced to the lake sediments from the watershed in association with aquatic and terrestrialderived OM. Dissolved As may bioaccumulate in aquatic organisms living in the water column, such as phytoplankton and zooplankton, to concentrations orders of magnitude higher than those in ambient waters (Eisler, 1988;Hellweger et al, 2003;Lopez et al, 2017). Abundant labile OM is observed both petrographically (alginate) and geochemically (S1 and S2) in the near-surface sediment of Bulldog and Powder Mag lakes, suggesting that aquatic organisms are accumulating As and delivering it to near-surface sediment (Fig.…”

Section: Sources Of As and Organic Matter To Lakesmentioning

confidence: 99%

Grain-Scale Analysis of Solid-Phase Organic Matter and Arsenic Mobility in Mining-Impacted 1 Sediment from Sub‐Arctic Lakes, Northwest Territories, Canada

Miller

Parsons

Jamieson

et al. 2021

Preprint

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Arsenic (As) is commonly sequestered at the sediment-water interface (SWI) in mining-impacted lakes through adsorption and/or co-precipitation with authigenic iron (Fe)-(oxy)hydroxides or sulphides. The results of this study demonstrate that the accumulation of solid-phase organic matter (OM) in near-surface sediments also influences the mobility and fate of As in sub-Arctic lakes. Sediment gravity cores, sediment grab samples, and porewaters were collected from three lakes downstream of the former Tundra gold mine, Northwest Territories. Analysis of sediment using combined micro-X-ray fluorescence/diffraction, K-edge X-ray Absorption Near-Edge Structure (XANES), and organic petrography shows that As is associated with both aquatic (benthic and planktonic alginate) and terrestrially-derived OM (cutinite; funginite). Most As is hosted by fine-grained Fe-(oxy)hydroxides or sulphide minerals ( e.g., goethite, orpiment, lepidocrocite, mackinawite); however, grain-scale synchrotron-based analysis shows that As is also associated with amorphous OM. Mixed As oxidation states in porewater (median = 62 % As (V), 18 % As (III); n = 20) and sediment (median = 80 % As (-I) and (III), 19 % As (V); n = 9) indicate the presence of variable redox conditions in the near-surface sediment and suggest that post-depositional remobilization of As has occurred . Detailed characterization of As-bearing OM at and below the SWI suggests that OM plays an important role in stabilizing redox-sensitive authigenic minerals and associated As. Based on these findings, it is expected that increased concentrations of labile OM will drive post-depositional surface-enrichment of As in mining-impacted lakes and may increase or decrease As flux from sediments to overlying surface waters.

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Arsenic (V) bioconcentration kinetics in freshwater macroinvertebrates and periphyton is influenced by pH

Cited by 19 publications

References 41 publications

Proton Competition and Free Ion Activities Drive Cadmium, Copper, and Nickel Accumulation in River Biofilms in a Nordic Ecosystem

Proton Competition and Free Ion Activities Drive Cadmium, Copper, and Nickel Accumulation in River Biofilms in a Nordic Ecosystem

Periphyton uptake and trophic transfer of coal fly‐ash–derived trace elements

Grain-Scale Analysis of Solid-Phase Organic Matter and Arsenic Mobility in Mining-Impacted 1 Sediment from Sub‐Arctic Lakes, Northwest Territories, Canada

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