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  1. www.sciencedirect.com › science › articleAnalytical methods for mercury speciation, detection, and...

    1 de nov. de 2020 · In the determination of mercury species like MeHg, EtHg, and In-Hg, several parameters like flow rate, sample volume, eluent type and pH have a direct effect on the sensitivity of measurements [36]. Therefore, optimisation is still required before using this method, especially with different mercury speciation.

  2. www.sciencedirect.com › science › articleMercury speciation, transformation, and transportation in soils...

    1 de may. de 2019 · They added Hg 0 and HgCl 2 to three surface soil samples of pH 5.6–5.8 containing 1.6–2.7% OM and monitored the Hg transformation via thermodesorption. After maintaining the samples in ambient temperature or low temperature (4 °C) dark conditions a large portion of Hg 0 was oxidized to Hg 2+ (~36–88%).

  3. www.ncbi.nlm.nih.gov › pmc › articlesMercury in Marine and Oceanic Waters—a Review - PMC

    7 de sept. de 2016 · The quantity of accumulated mercury in aquatic organisms is affected by such factors as the level in the trophic chain (the higher level in the trophic chain it is, the more mercury is stored in it), the age of organisms, the microbial activity, the mercury concentration in the sediment layer, the content of the soluble fraction of organic matter, salinity, pH, and the redox potential (Kamman ...

  4. www.researchgate.net › figure › Distribution-of-mercury-species-in-aqueous-systemDistribution of mercury species in aqueous system as a function...

    Download scientific diagram | Distribution of mercury species in aqueous system as a function of pH. from publication: Removal of Hg (II) and Mn (II) from aqueous solution using nanoporous...

  5. link.springer.com › article › 10Mercury in Marine and Oceanic Waters—a Review

    7 de sept. de 2016 · In the biogeochemical mercury cycling, a substantial part of it reaches seas and oceans and its important source is its atmospheric deposition (Bindler 2003; Wang et al. 2004).. In oceanic waters, mercury mainly occurs in the forms of Hg 0, Hg 2+, MeHg, and diMeHg and in colloidal form (Morel et al. 1998).In marine waters, mercury forms compounds with chlorine (HgCl 3 − and HgCl 4 2−) to a ...

  6. agupubs.onlinelibrary.wiley.com › doi › fullMercury species concentrations and fluxes in the Central Tropical...

    25 de abr. de 2015 · Samples were buffered with either 2 M acetic acid or 1 M citric acid buffer (pH 5) and neutralized with KOH (45%) to pH 5. The addition of ascorbic acid (0.17% final vol/vol) allowed for enhanced MMHg determination from seawater after direct derivatization with sodium tetraethylborate (1%, in 2% KOH) and gave detection limits around ...

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