Results 21 to 30 of about 3,134 (251)
Mercury evidence from southern Pangea terrestrial sections for end-Permian global volcanic effects
Nature Communications, 2023 Mercury (Hg) concentrations and isotopes from terrestrial sections of southern Pangea provide evidence of the global volcanic effects of the Siberian Traps during the Permian-Triassic ...
Jun Shen +9 more
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Mercury evidence for combustion of organic-rich sediments during the end-Triassic crisis
Nature Communications, 2022 Mercury (Hg) concentrations and isotopes from a deep-ocean Triassic–Jurassic (~201 Ma) boundary section provide evidence of large inputs from terrestrial organic-rich sources through combustion by magmatic sills and wildfires.
Jun Shen +4 more
doaj +1 more source
Mercury isotope evidence for marine photic zone euxinia across the end-Permian mass extinction
Communications Earth & Environment, 2023 The driving forces, kill and recovery mechanisms for the end-Permian mass extinction (EPME), the largest Phanerozoic biological crisis, are under debate.
Ruoyu Sun +10 more
doaj +1 more source
Traceability analysis of dustfall mercury and topsoil mercury in Wuda Coalfield
矿业科学学报, 2021 The Hg isotopic ratios of coal, dustfall and topsoil from coal fire area No.9 in Wuda coalfield were determined by multiple-collector inductively coupled plasma-mass spectrometry(MC-ICPMS)to explore the possible coal seam source of surface Hg in coal ...
Li Shan +4 more
doaj +1 more source
Assessing sources of human methylmercury exposure using stable mercury isotopes. [PDF]
Environ Sci Technol, 2014 *S Supporting Information ABSTRACT: Seafood consumption is the primary route of methyl-mercury (MeHg) exposure for most populations. Inherent uncertainties in dietary survey data point to the need for an empirical tool to confirm exposure sources.
Li M +7 more
europepmc +3 more sources
Influence of Macrophyte and Gut Microbiota on Mercury Contamination in Fish: A Microcosms Study
Applied Sciences, 2020 The freshwater lakes of southwestern France are subject to the development of invasive macrophytes which are associated with mercury (Hg) contamination of the food web.
Sophie Gentès +6 more
doaj +1 more source
The Separation of Mercury into Isotopes [PDF]
Nature, 1921 EARLY in 1920 Harkins and Broeker reported a separation of chlorine into isotopes, which amounted at that time to an increase in density equal to 1550 parts per million. About six months later Bronsted and von Hevesy reported a separation of mercury, which was, however, only about one-thirtieth as great, or 50 parts per million.
William D. Harkins, R. S. Mulliken
openaire +1 more source
Nature Communications, 2023 Peatland vegetation takes up mercury (Hg) from the atmosphere, typically contributing to net production and export of neurotoxic methyl-Hg to downstream ecosystems. Chemical reduction processes can slow down methyl-Hg production by releasing Hg from peat
Chuxian Li +11 more
doaj +1 more source
Ecotoxicology and Environmental Safety, 2022 Severe environmental issues are caused by long-term coal mining activities; however, the process of mercury (Hg) response in mining subsidence area sediments (MSAS) is still unclear, and direct evidence showing the relationship between Hg accumulation ...
Xing Chen +6 more
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Isotope and isomer shifts in mercury [PDF]
Nuclear Physics, 1966 Abstract Calculations have been made of the change in the mean square charge radius of the mercury isotopes which results when a neutron is added to a doubly-even core. Both the ground and isomeric states of the odd-mass isotopes were considered. First-order perturbation theory was used to obtain the amplitudes of monopole excitations of the proton ...
openaire +2 more sources