Mechanisms regulating mercury bioavailability for methylating microorganisms in the aquatic environment: a critical review

H Hsu-Kim, KH Kucharzyk, T Zhang… - … science & technology, 2013 - ACS Publications
Mercury is a potent neurotoxin for humans, particularly if the metal is in the form of
methylmercury. Mercury is widely distributed in aquatic ecosystems as a result of …

Challenges and opportunities for managing aquatic mercury pollution in altered landscapes

H Hsu-Kim, CS Eckley, D Achá, X Feng, CC Gilmour… - Ambio, 2018 - Springer
The environmental cycling of mercury (Hg) can be affected by natural and anthropogenic
perturbations. Of particular concern is how these disruptions increase mobilization of Hg …

Molecular composition of organic matter controls methylmercury formation in boreal lakes

AG Bravo, S Bouchet, J Tolu, E Björn… - Nature …, 2017 - nature.com
A detailed understanding of the formation of the potent neurotoxic methylmercury is needed
to explain the large observed variability in methylmercury levels in aquatic systems. While it …

Microbial mercury methylation in aquatic environments: a critical review of published field and laboratory studies

O Regnell, CJ Watras - Environmental science & technology, 2018 - ACS Publications
Methylmercury (MeHg) is an environmental contaminant of concern because it biomagnifies
in aquatic food webs and poses a health hazard to aquatic biota, piscivorous wildlife and …

Biotic formation of methylmercury: A bio–physico–chemical conundrum

AG Bravo, C Cosio - Limnology and Oceanography, 2020 - Wiley Online Library
Mercury (Hg) is a natural and widespread trace metal, but is considered a priority pollutant,
particularly its organic form methylmercury (MMHg), because of human's exposure to MMHg …

Mercury methylation by anaerobic microorganisms: a review

M Ma, H Du, D Wang - Critical Reviews in Environmental Science …, 2019 - Taylor & Francis
Although mercury (Hg) is toxic at all valence states, organic Hg, especially
monomethylmercury (MeHg, CH3Hg+, methylmercury), is more toxic than inorganic Hg (Hg …

Mobilization, methylation, and demethylation of mercury in a paddy soil under systematic redox changes

J Wang, SM Shaheen, M Jing… - … science & technology, 2021 - ACS Publications
Methylmercury (MeHg) contamination in paddy fields is a significant environmental issue
globally since over half of the population of our planet consumes rice. MeHg is a neurotoxin …

Sulfate-reducing bacterium Desulfovibrio desulfuricans ND132 as a model for understanding bacterial mercury methylation

CC Gilmour, DA Elias, AM Kucken… - Applied and …, 2011 - Am Soc Microbiol
We propose the use of Desulfovibrio desulfuricans ND132 as a model species for
understanding the mechanism of microbial Hg methylation. Strain ND132 is an anaerobic …

Methylation of mercury by bacteria exposed to dissolved, nanoparticulate, and microparticulate mercuric sulfides

T Zhang, B Kim, C Levard, BC Reinsch… - … science & technology, 2012 - ACS Publications
The production of the neurotoxic methylmercury in the environment is partly controlled by the
bioavailability of inorganic divalent mercury (Hg (II)) to anaerobic bacteria that methylate Hg …

Equilibrium mercury isotope fractionation between dissolved Hg (II) species and thiol-bound Hg

JG Wiederhold, CJ Cramer, K Daniel… - … science & technology, 2010 - ACS Publications
Stable Hg isotope ratios provide a new tool to trace environmental Hg cycling. Thiols (-SH)
are the dominant Hg-binding groups in natural organic matter. Here, we report experimental …