groundwater flow fractionation

  • Tulane University - Department of Earth and Environmental ...

    Tang J. and Johannesson K. H. (2005) Rare earth element concentrations, speciation, and fractionation along groundwater flow paths: The Carrizo Sand (Texas) and Upper Floridan aquifers. In: K. H. Johannesson (ed.) Rare Earth Elements in Groundwater Flow Systems. Springer, (Dordrecht), pp. 223-251.

  • groundwater flow fractionation

    Groundwater Flow Fractionation - chapter 9 rare earth element concentrations, speciation, and fractionation along groundwater flow paths: the carrizo sand (texas) and upper floridan aquifers .

  • Sun Tae Kim | PhD | Hannam University - ResearchGate

    Gravitational field-flow fractionation (GrFFF) is a separation technique that utilizes earth's gravity as the external field. GrFFF is a convenient tool for the size and/or density-based separation of micron-sized particles of various origins.

  • Brent Sleep - Department of Civil & Mineral Engineering

    Background. Professors Brent Sleep conducts hybrid research with laboratory experimentation, field studies and computer modelling to determine the fate and transport of organic chemicals in the subsurface and surface aquatic environments.

  • Steven Phillips - USGS

    Steven Phillips Hydrologist ... Simulation of ground-water flow and land subsidence ... Mixing effects on apparent reaction rates and isotope fractionation during ...

  • Ammonium transport and reaction in contaminated ...

    The NH 4 + cloud was elongated in the direction of groundwater flow but confined to a relatively narrow vertical interval near the upper boundary of the wastewater plume. The NH 4 + concentrations decreased in all directions around the NH 4 + cloud, but the steepest gradient was near the upper boundary between the anoxic plume and overlying ...

  • Isotope hydrology - Wikipedia

    Isotope hydrology is a field of hydrology that uses ... (called fractionation). ... Another application involves the separation of groundwater flow and baseflow from ...


    chapter 9 rare earth element concentrations, speciation, and fractionation along groundwater flow paths: the carrizo sand (texas) and upper floridan aquifers

  • Soil and Groundwater Equipment in Europe | …

    Field-flow fractionation (FFF) solutions for nanoparticles of polymer-materials Field-flow fractionation (FFF) solutions for proteins of biopharmaceutical In-situ Chemical oxidation for soil and groundwater

  • Dual Mechanism Conceptual Model for Cr Isotope ...

    Chromium isotope analysis is rapidly becoming a valuable complementary tool for tracking Cr(VI) treatment in groundwater. Evaluation of various treatment materials has demonstrated that the degree of isotope fractionation is a function of the reaction mechanism, where reduction of Cr(VI) to Cr(III) induces the largest fractionation.

  • USGS Groundwater Dating Lab

    Tritium input to ground water has occurred in a series of spikes ... isotope fractionation ... tracers to quantify groundwater flow in a ...

  • Groundwater Forensics - A Tale of Two Sites | Antea …

    Resolving groundwater flow patterns between the two sites: Antea Group addressed DEP questions regarding groundwater flow on a more localized scale than had been attempted previously. These questions were addressed through a detailed analysis of historical water table elevation data and showed that there was a possibility of groundwater flow ...

  • Sulfur biogeochemistry and isotopic fractionation …

    Groundwater and sediment samples (~1 m depth) at sites representative of different groundwater pathways were collected to determine the aqueous speciation of sulfur and the fractionation of sulfur isotopes in aqueous and solid phases. In addition, selected

  • Applicability of Stable Isotope Fractionation Analysis for ...

    In recent years the analysis of stable isotope fractionation has increasingly been used for characterizing and quantifying biodegradation of contaminants in aquifers. The correlation of carbon and hydrogen isotope signatures of benzene in a BTEX-contaminated aquifer located in the area of a former hydrogenation plant gave indications that …

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