Diatom ooze—a large marine mercury sink
WebJul 26, 2016 · Diatom ooze—A large marine mercury sink. Science, Vol. 361, Issue. 6404, p. 797. CrossRef; Google Scholar; ... Local marine reservoir age variability at Luzon Strait in the South China Sea during the Holocene. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Vol. 455, … WebJul 30, 2024 · They found out that microalgae (diatoms) accumulate high amounts of mercury in marine sediments and reveal onset and extent of global anthropogenic mercury emissions. Atmospheric derived mercury …
Diatom ooze—a large marine mercury sink
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WebJul 26, 2024 · Abstract. The role of algae for sequestration of atmospheric mercury in the ocean is largely unknown owing to a lack of marine sediment data. We used high … WebMay 8, 2024 · diatom ooze Soft, siliceous, deep-sea deposit composed of more than 30% (by volume) diatom cell walls (see BACILLARIOPHYCEAE).Diatomaceous sediments …
WebAbstract. The role of algae for sequestration of atmospheric mercury in the ocean is largely unknown owing to a lack of marine sediment data. We used high-resolution cores from … WebThe silica cycle is the biogeochemical cycle in which biogenic silica is transported between the Earth's systems. Silicon is considered a bioessential element and is one of the most abundant elements on Earth. The silica cycle has significant overlap with the carbon cycle (see carbonate–silicate cycle) and plays an important role in the sequestration of carbon …
WebJul 26, 2024 · a Holocene Hg sink and estimated the global amount of Hg accumulated in diatom ooze. In addition, we reconstructed the chronology of Hg accumulation and … WebJan 8, 2024 · Volcanic activity associated with the emplacement of Large Igneous Provinces (LIPs) has been linked to most Phanerozoic extinctions/episodes of major environmental change. In recent years, mercury (Hg) enrichments and elevated mercury/total organic carbon (Hg/TOC) ratios have been increasingly utilized as a marker of volcanism in …
WebFeb 27, 2024 · The geochemical speciation of total mercury (THg) was examined in pre-1800 Arctic lake sediments to improve understanding of the factors controlling “natural baseline” THg. Solid-phase binding forms of THg were determined by sequential extraction of dated cores from three lakes in different ecozones (barren tundra, grassy tundra, and …
WebAug 1, 2024 · The environmental geochemistry group at the Institute of Geoecology at TU Braunschweig under direction of Prof Harald Biester has investigated marine bottom sediments which consist mainly of diatom remains (diatom ooze) for the historical accumulation of mercury. Those so called diatom ooze sediments are a result of algae … port huron mental health hospitalWebJul 22, 2024 · When released to the biosphere, mercury (Hg) is very mobile and can take millennia to be returned to a secure, long-term repository. ... [65] Zaferani S, Pérez-Rodriguez M and Biester H 2024 Diatom ooze—a large marine mercury sink Science 361 797–800. Crossref; Google Scholar; Export references: BibTeX RIS. Back to top. … irmaa 2020 brackets and premiumsWebThey found out that microalgae (diatoms) accumulate high amounts of mercury in marine sediments and reveal onset and extent of global anthropogenic mercury emissions. … irmaa brackets adjust for inflationWebAug 10, 2024 · Diatom ooze sediments are a large marine mercury sink (Press Release, ChemEurope.com; 30 July 2024) Abstract Diatom-ooze — A Large Neglected Global Marine Mercury Sink… irmaa 2020 medicare rates bracketsirmaa brackets for 2019WebMay 26, 2024 · Zaferani, S. et al. Diatom ooze - A large marine mercury sink. Science 361 , 797–800 (2024). Article ADS CAS Google Scholar irmaa appeal form 2021WebMercury has been used and released by humans by multiple processes such as gold and silver mining and emissions of mercury to the atmosphere by coal burning, to name the … irmaa 2021 brackets and premiums