Mercury isotope fractionation during dark abiotic reduction of Hg (II) by dissolved, surface-bound, and structural Fe (II)

L Schwab, N Gallati, SM Reiter, RL Kimber… - Environmental …, 2023 - ACS Publications
Stable mercury (Hg) isotope ratios are an emerging tracer for biogeochemical
transformations in environmental systems, but their application requires knowledge of …

Shining light on recent advances in microbial mercury cycling

DS Grégoire, AJ Poulain - Facets, 2018 - facetsjournal.com
Mercury (Hg) is a global pollutant emitted primarily as gaseous Hg0 that is deposited in
aquatic and terrestrial ecosystems following its oxidation to HgII. From that point, microbes …

MeHg production in eutrophic lakes: Focusing on the roles of algal organic matter and iron-sulfur-phosphorus dynamics

T Wang, X Yang, Z Li, W Chen, X Wen, Y He… - Journal of Hazardous …, 2023 - Elsevier
The mechanisms by which eutrophication affects methylmercury (MeHg) production have
not been comprehensively summarized, which hinders accurately predicting the MeHg risk …

Mercury stable isotope fractionation during abiotic dark oxidation in the presence of thiols and natural organic matter

W Zheng, JD Demers, X Lu, BA Bergquist… - … science & technology, 2018 - ACS Publications
Mercury (Hg) stable isotope fractionation has been widely used to trace Hg sources and
transformations in the environment, although many important fractionation processes remain …

Anaerobic oxidation of Hg (0) and methylmercury formation by Desulfovibrio desulfuricans ND132

MJ Colombo, J Ha, JR Reinfelder, T Barkay… - … et Cosmochimica Acta, 2013 - Elsevier
The transformation of inorganic mercury (Hg) to methylmercury (MeHg) plays a key role in
determining the amount of Hg that is bioaccumulated in aquatic food chains. An accurate …

Thermodynamics of Hg (II) bonding to thiol groups in Suwannee River natural organic matter resolved by competitive ligand exchange, Hg LIII-edge EXAFS and 1H …

Y Song, T Jiang, V Liem-Nguyen… - … science & technology, 2018 - ACS Publications
A molecular level understanding of the thermodynamics and kinetics of the chemical
bonding between mercury, Hg (II), and natural organic matter (NOM) associated thiol …

Detailed assessment of the kinetics of Hg-cell association, Hg methylation, and methylmercury degradation in several Desulfovibrio species

AM Graham, AL Bullock, AC Maizel… - Applied and …, 2012 - Am Soc Microbiol
The kinetics of inorganic Hg [Hg (II) i] association, methylation, and methylmercury (MeHg)
demethylation were examined for a group of Desulfovibrio species with and without MeHg …

Mercury isotope signatures record photic zone euxinia in the Mesoproterozoic ocean

W Zheng, GJ Gilleaudeau, LC Kah… - Proceedings of the …, 2018 - National Acad Sciences
Photic zone euxinia (PZE) is a condition where anoxic, H2S-rich waters occur in the photic
zone (PZ). PZE has been invoked as an impediment to the evolution of complex life on early …

Mackinawite (FeS) reduces mercury (II) under sulfidic conditions

SE Bone, JR Bargar, G Sposito - Environmental science & …, 2014 - ACS Publications
Mercury (Hg) is a toxicant of global concern that accumulates in organisms as methyl Hg.
The production of methyl Hg by anaerobic bacteria may be limited in anoxic sediments by …

Cellular mercury coordination environment, and not cell surface ligands, influence bacterial methylmercury production

SA Thomas, B Mishra, SCB Myneni - Environmental Science & …, 2020 - ACS Publications
The conversion of inorganic mercury (Hg (II)) to methylmercury (MeHg) is central to the
understanding of Hg toxicity in the environment. Hg methylation occurs in the cytosol of …