Sökning: "Johan Ingri"

Visar resultat 1 - 5 av 7 avhandlingar innehållade orden Johan Ingri.

  1. 1. Geochemistry of ferromanganese concretions and associated sediments in the Gulf of Bothnia

    Författare :Johan Ingri; Luleå tekniska universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Applied Geology; Tillämpad geologi;

    Sammanfattning : .... LÄS MER

  3. 2. Dissolved and suspended transport of tungsten, molybdenum, and vanadium in natural waters

    Författare :Susanne Bauer; Johan Ingri; Carl-Magnus Mörth; Luleå tekniska universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; tungsten; molybdenum; vanadium; Baltic Sea; redox cycling; suspended particles; boreal rivers; Applied Geology; Tillämpad geologi;

    Sammanfattning : Some transition metals and metalloids occur primarily as oxyanions in natural waters including antimony, arsenic, chromium, molybdenum, tungsten and vanadium. These oxyanions can pass through cell walls along the same pathways as phosphate or sulfate. Some of these oxyanions are essential for life, but in high concentrations they become all toxic. LÄS MER

  4. 3. Iron isotopes in aquatic systems

    Författare :Sarah Conrad; Johan Ingri; Michael Bau; Luleå tekniska universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Applied Geochemistry; Tillämpad geokemi;

    Sammanfattning : The cycling of iron (Fe) is a key component for understanding water quality and biogeochemical processes. It serves as mediator during biotic and abiotic processes, as electron acceptor during the degradation of organic matter, as surface for trace element and organic matter adsorption, and is necessary for primary production processes. LÄS MER

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

    Författare :Ralf Dahlqvist; Johan Ingri; Jérôme Viers; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Geokemi; Earth sciences; Geovetenskap;

    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

  7. 5. Characterisation of Dissolved Metals in Urban Runoff : Fractionation, Lability and Bioavailability

    Författare :Sarah Lindfors; Johan Ingri; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; VA-teknik; Urban Water Engineering; Centrumbildning - Centrum för dagvattenhantering DRIZZLE ; Centre - Centre for Stormwater Management DRIZZLE ;

    Sammanfattning : .... LÄS MER