Arctic source for elevated atmospheric mercury (Hg0) in the western Bering Sea in the summer of 2013

Калинчук, В. В.; Мишуков, В. Ф.; Астахов, А. С.

doi:10.1016/j.jes.2016.12.022

Cited by 14 publications

(4 citation statements)

References 40 publications

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“…Preconcentration on gold traps, followed by desorption into an atomic fluorescence detector, remains by far the most common method to measure elemental Hg, though other methods are sometimes used (Albuquerque et al, 2017;El-Feky et al, 2018;Hynes et al, 2017;Kalinchuk et al, 2018;Lian et al, 2018). As the bias in KCl denuder-based measurements of oxidized Hg has become well-known (Bu et al, 2018;Cheng and Zhang, 2017;Gustin et al, 2015;Lyman et al, 2016), several alternative methods have emerged (Bu et al, 2018;Gratz et al, 2015;Huang and Gustin, 2015a;Miller et al, 2019;Slemr et al, 2018;Urba et al, 2017).…”

Section: Advances In Understanding Atmosphere Chemistry and Inputs To Ecosystemsmentioning

confidence: 99%

Mercury biogeochemical cycling: A synthesis of recent scientific advances

Gustin

Bank

Bishop

et al. 2020

Science of The Total Environment

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This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. Declaration of InterestThere are no conflicts of interest.

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Section: Advances In Understanding Atmosphere Chemistry and Inputs To Ecosystemsmentioning

confidence: 99%

Mercury biogeochemical cycling: A synthesis of recent scientific advances

Gustin

Bank

Bishop

et al. 2020

Science of The Total Environment

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“…Inorganic Hg in the atmosphere is transported through air to higher latitudes where it is deposited on aquatic and terrestrial ecosystems [16][17][18]. Snow, ice and soils on land are key repositories of atmospheric Hg deposition in the Arctic, which could be released due to climate warming [8,[19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Diet and landscape characteristics drive spatial patterns of mercury accumulation in a high-latitude terrestrial carnivore

Peraza,

Chételat,

Richardson

et al. 2023

PLoS ONE

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Limited information exists on mercury concentrations and environmental drivers of mercury bioaccumulation in high latitude terrestrial carnivores. Spatial patterns of mercury concentrations in wolverine (Gulo gulo, n = 419) were assessed across a 1,600,000 km2 study area in relation to landscape, climate, diet and biological factors in Arctic and boreal biomes of western Canada. Hydrogen stable isotope ratios were measured in wolverine hair from a subset of 80 animals to assess the spatial scale for characterizing environmental conditions of their habitat. Habitat characteristics were determined using GIS methods and raster datasets at two scales, the collection location point and a 150 km radius buffer, which was selected based on results of a correlation analysis between hydrogen stable isotopes in precipitation and wolverine hair. Total mercury concentrations in wolverine muscle ranged >2 orders of magnitude from 0.01 to 5.72 μg/g dry weight and varied geographically, with the highest concentrations in the Northwest Territories followed by Nunavut and Yukon. Regression models at both spatial scales indicated diet (based on nitrogen stable isotope ratios) was the strongest explanatory variable of mercury concentrations in wolverine, with smaller though statistically significant contributions from landscape variables (soil organic carbon, percent cover of wet area, percent cover of perennial snow-ice) and distance to the Arctic Ocean coast. The carbon and nitrogen stable isotope ratios of wolverine muscle suggested greater mercury bioaccumulation could be associated with feeding on marine biota in coastal habitats. Landscape variables identified in the modelling may reflect habitat conditions which support enhanced methylmercury transfer to terrestrial biota. Spatially-explicit estimates of wet atmospheric deposition were positively correlated with wolverine mercury concentrations but this variable was not selected in the final regression models. These landscape patterns provide a basis for further research on underlying processes enhancing methylmercury uptake in high latitude terrestrial food webs.

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“…Due to its stability in the atmosphere, Hg 0 represents the most abundant form of Hg in this compartment (where it is usually abbreviated as GEM, Gaseous Elemental Mercury [9]) and can persist for a considerable period of time (0.6-2 years) before being removed via wet and dry depositions [10,11]. Consequently, Hg 0 can be subjected to long-range atmospheric transport even in remote ecosystems [12][13][14]. Moreover, deposed Hg can be re-emitted back into the atmosphere after its reduction to Hg 0 , further increasing the spatial distribution of Hg and making it a pollutant of global concern, as recognised by the Minamata Convention in 2013 [15,16].…”

Section: Introductionmentioning

confidence: 99%

Evasion of Gaseous Elemental Mercury from Forest and Urban Soils Contaminated by Historical and Modern Ore Roasting Processes (Idrija, Slovenia)

et al. 2023

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Considerable amounts of gaseous elemental mercury (Hg0) can be released into the atmosphere from Hg-enriched substrates, such as those from former mining areas, posing a potential environmental threat. In this work, Hg0 fluxes at the soil–air interface under natural vegetation covers were measured in various locations within the Idrija Hg mining area (Slovenia) and its surroundings. Sites were selected in order to compare Hg0 fluxes from both forest soils heavily impacted by historical ore roasting and urban soils characterised by a different degree of Hg enrichment due to the natural occurrence of Hg in rocks or recent mining and roasting processes. Replicate measurements at each site were conducted using a non-steady state flux chamber coupled with a real-time Hg0 analyser (Lumex RA-915M). Moreover, topsoil samples (0–2 cm) were analysed for Hg total concentration and speciation. Cinnabar was the predominant Hg form in almost all the sites. Despite Hg0 being undetectable in soils using thermo-desorption, substantial emissions were observed (70.7–701.8 ng m−2 h−1). Urban soils in a naturally enriched area showed on average the highest Hg0 fluxes, whereas relatively low emissions were found at the historical roasting site, which is currently forested, despite the significantly high total Hg content in soils (up to 219.0 and 10,400 mg kg−1, respectively). Overall, our findings confirm that shading by trees or litter may effectively limit the amount of Hg0 released into the atmosphere even from extremely enriched soils, thus acting as a natural mitigation.

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Arctic source for elevated atmospheric mercury (Hg0) in the western Bering Sea in the summer of 2013

Cited by 14 publications

References 40 publications

Mercury biogeochemical cycling: A synthesis of recent scientific advances

Mercury biogeochemical cycling: A synthesis of recent scientific advances

Diet and landscape characteristics drive spatial patterns of mercury accumulation in a high-latitude terrestrial carnivore

Evasion of Gaseous Elemental Mercury from Forest and Urban Soils Contaminated by Historical and Modern Ore Roasting Processes (Idrija, Slovenia)

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