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Themed collection Mercury Biogeochemistry, Exposure, and Impacts

17 items
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Front cover

Graphical abstract: Front cover
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Editorial

Modern science of a legacy problem: mercury biogeochemical research after the Minamata Convention

Guest editors Heileen Hsu-Kim, Chris Eckley, and Noelle Selin introduce the Mercury Biogeochemistry, Exposure, and Impacts themed issue of Environmental Science: Processes & Impacts.

Graphical abstract: Modern science of a legacy problem: mercury biogeochemical research after the Minamata Convention
Paper

Characterization of manganese oxide amendments for in situ remediation of mercury-contaminated sediments

Mn(IV)-oxide amendment experiments with mercury-contaminated sediments demonstrate mineral redox buffering by mixed-valent (Mn, Fe)(III, II) oxides to limit mercury methylation.

Graphical abstract: Characterization of manganese oxide amendments for in situ remediation of mercury-contaminated sediments
Paper

Manganese(IV) oxide amendments reduce methylmercury concentrations in sediment porewater

Manganese(IV) oxide amendments reduce methylmercury concentrations in sediment by poising redox to inhibit sulfate reduction.

Graphical abstract: Manganese(iv) oxide amendments reduce methylmercury concentrations in sediment porewater
Open Access Paper

Mining legacy across a wetland landscape: high mercury in Upper Peninsula (Michigan) rivers, lakes, and fish

A geographic enigma is that atmospheric deposition of mercury is low and declining in the Upper Peninsula although total mercury (THg) and (MeHg) levels are high in waters and fish.

Graphical abstract: Mining legacy across a wetland landscape: high mercury in Upper Peninsula (Michigan) rivers, lakes, and fish
From the themed collection: Recent Open Access Articles
Paper

Microbial community structure with trends in methylation gene diversity and abundance in mercury-contaminated rice paddy soils in Guizhou, China

Sulfate-reducing bacteria and methanogens are the primary Hg-methylators in Chinese rice paddies.

Graphical abstract: Microbial community structure with trends in methylation gene diversity and abundance in mercury-contaminated rice paddy soils in Guizhou, China
Paper

Hg isotopes reveal in-stream processing and legacy inputs in East Fork Poplar Creek, Oak Ridge, Tennessee, USA

Reduction processes and inputs of hyporheic pore water influence Hg cycling and flux in Hg-contaminated headwater stream.

Graphical abstract: Hg isotopes reveal in-stream processing and legacy inputs in East Fork Poplar Creek, Oak Ridge, Tennessee, USA
Paper

The precipitation, growth and stability of mercury sulfide nanoparticles formed in the presence of marine dissolved organic matter

Coastal and oceanic DOM formed stable mercury sulfide nanoparticle solutions but smaller sized particles were obtained when coastal DOM was used.

Graphical abstract: The precipitation, growth and stability of mercury sulfide nanoparticles formed in the presence of marine dissolved organic matter
Paper

Mercury behaviour and C, N, and P biogeochemical cycles during ecological restoration processes of old mining sites in French Guiana

Restoration processes affect positively microbial activities and decrease mercury mobility.

Graphical abstract: Mercury behaviour and C, N, and P biogeochemical cycles during ecological restoration processes of old mining sites in French Guiana
Paper

Evidence of transboundary mercury and other pollutants in the Puyango-Tumbes River basin, Ecuador–Peru

Hg isotopic analyses show Au processing in Ecuador is source of pollution in Peru.

Graphical abstract: Evidence of transboundary mercury and other pollutants in the Puyango-Tumbes River basin, Ecuador–Peru
Paper

Distribution of mercury species and mercury isotope ratios in soils and river suspended matter of a mercury mining area

Light/heavy isotope enrichment is strongly related with Hg species. Combining Hg isotope analysis and Hg speciation allows the differentiation between Hg sources and Hg species transformation in Hg contaminated areas.

Graphical abstract: Distribution of mercury species and mercury isotope ratios in soils and river suspended matter of a mercury mining area
Paper

Response of mercury in an Adirondack (NY, USA) forest stream to watershed lime application

Total mercury and dissolved organic carbon concentrations increased following a lime application, while increases in methylmercury concentrations did not persist.

Graphical abstract: Response of mercury in an Adirondack (NY, USA) forest stream to watershed lime application
Paper

Mercury methylation in stormwater retention ponds at different stages in the management lifecycle

Stormwater retention ponds produce MeHg, but accumulate less than other types of small wetlands. Their mercury biogeochemistry is subtly different from that of superficially similar environments.

Graphical abstract: Mercury methylation in stormwater retention ponds at different stages in the management lifecycle
Paper

Emerging investigator series: methylmercury speciation and dimethylmercury production in sulfidic solutions

Experimental and computational evidence show that dimethylmercury is produced from decomposition of bis(methylmercury(II)) sulfide.

Graphical abstract: Emerging investigator series: methylmercury speciation and dimethylmercury production in sulfidic solutions
Paper

Responses of deposition and bioaccumulation in the Great Lakes region to policy and other large-scale drivers of mercury emissions

The effect of policy on fish mercury levels varies spatially, even within the Great Lakes Basin.

Graphical abstract: Responses of deposition and bioaccumulation in the Great Lakes region to policy and other large-scale drivers of mercury emissions
Paper

Emerging investigator series: the effect of wildfire on streamwater mercury and organic carbon in a forested watershed in the southeastern United States

The amount of streamwater mercury associated with suspended solids was an order of magnitude greater following a low-intensity wildfire.

Graphical abstract: Emerging investigator series: the effect of wildfire on streamwater mercury and organic carbon in a forested watershed in the southeastern United States
From the themed collection: Emerging Investigator Series
17 items

About this collection

Edited by ESPI Associate Editor Helen Hsu-Kim (Duke University) and Guest Editors Chris Eckley (EPA) and Noelle Selin (MIT) this collection showcases a selection of the original research presented at the 13th International Conference on Mercury as a Global Pollutant in Providence, July 2017.

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