Sökning: "colloidal speciation"

Hittade 4 avhandlingar innehållade orden colloidal speciation.

  1. 1. Origin and mobility of major and key trace elements (Cs, YREEs) in fracture groundwater in the upper 1.2 kilometres of coastal granitoids - Implications for future repositories of spent nuclear fuel

    Detta är en avhandling från Växjö : Linnaeus University Press

    Författare :Frédéric A. Mathurin; Linnéuniversitetet.; [2015]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; fracture groundwater; groundwater mixing; seawater intrusion; water-rock interactions; cation exchange; Cesium; Rare Earth Elements; colloidal speciation; humic substances; dual porosity; inverse modelling; Äspö HRL; Laxemar; Forsmark; eaux de fractures; mélange d eaux; intrusion d eau de mer; interactions eau-roche; échanges cationiques; Césium; Elements Terres Rares; spéciation colloïdale; substances humiques; double porosité; modélisation inverse; Äspö HRL; Laxemar; Forsmark; sprickvatten; grundvatten mixing; havsvattenintrusion; vatten-berg interaction; katjonbyte; cesium; sällsynta jordartsmetaller; kollidal speciation; humusämnen; dual porositet; invers modellering; Äspölaboratoriet; Äspötunneln; Laxemar; Forsmark; Miljövetenskap; Environmental Science;

    Sammanfattning : This thesis focuses on the chemical and isotopic features of groundwater residing in the upper 1.2 km of sparsely fractured crystalline bedrock of the Baltic Shield. LÄS MER

  2. 2. Speciation and fractionation of Ca and the REE in fresh and marine waters

    Detta är en avhandling från Institutionen för geologi och geokemi

    Författare :Ralf Dahlqvist; Stockholms universitet.; [2004]

    Sammanfattning : This study is concerned with speciation and fractionation of the rare earth elements (REE) and calcium (Ca) in aqueous solutions. The aim is to investigate the chemical states and physical sizes in which these elements can be present. The REE (including neodymium) and Ca have contrasting geochemical behavior in aqueous solutions. LÄS MER

  3. 3. Fate of riverine iron over estuarine salinity gradients

    Detta är en avhandling från Lund University

    Författare :Simon Herzog; Lund University.; Lunds universitet.; Lund University.; Lunds universitet.; Lund University.; Lunds universitet.; Lund University.; Lunds universitet.; [2018-12]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; iron Fe ; Organic matter; boreal rivers; XAS; DLS; Fe isotope;

    Sammanfattning : Rivers have traditionally not been considered important sources of bioavailable iron (Fe) to the marine waters, since most Fe is lost by salinity-induced aggregation and sedimentation during estuarine mixing. However, recent studies from boreal rivers found a remarkably high Fe stability, probably due to the interaction with organic matter. LÄS MER

  4. 4. Bacteria and geochemistry in a former uranium open pit mine - mobilization of trace metals

    Detta är en avhandling från Stockholm : Department of Applied Environmental Science (ITM), Stockholm University

    Författare :Frida Edberg; Stockholms universitet.; [2011]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Pseudomonas fluorescens; siderophore; Ranstad; alum shale; iron; pyrosequencing; redox; size fractionation; NATURAL SCIENCES; NATURVETENSKAP; tillämpad miljövetenskap; Applied Environmental Science;

    Sammanfattning : In mining areas around the world, chemical and biotic processes have lead to the release of toxic substances, e.g. metals. Microbial processes influence metal speciation, while the chemical environment shapes and controls microbial populations. LÄS MER