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Träfflista för sökning "L773:0016 7029 OR L773:1556 1968 srt2:(2005-2009)"

Sökning: L773:0016 7029 OR L773:1556 1968 > (2005-2009)

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1.
  • Malinovskiy, Dmitry, et al. (författare)
  • Determination of the isotopic composition of molybdenum in the bottom sediments of freshwater basins
  • 2007
  • Ingår i: Geochemistry International. - 0016-7029 .- 1556-1968. ; 45:4, s. 381-389
  • Tidskriftsartikel (refereegranskat)abstract
    • This paper presents the results of measurements of the Mo isotopic composition in the bottom sediments (BS) of freshwater basins. Mo isotopic ratios were measured using a multicollector inductively coupled plasma mass spectrometer (MC ICP MS). Efficient methods were used in this study for Mo separation from the elements of the sample matrix and correction for instrumental mass discrimination. This allowed us to achieve a high accuracy of 0.06, 0.08, and 0.14‰ (2 σ) for the measurement of 97Mo/95Mo, 98Mo/95Mo, and 100Mo/95Mo, respectively. The range of variations in Mo isotope ratios observed in the collected BS columns was ∼2.2‰ in terms of δ97Mo/95Mo. The results obtained here suggest that geochemical processes occurring during Mo migration with land water can change the isotopic composition of Mo. It is pointed out that the potential use of Mo isotopic systematics for reconstructions of redox conditions in seawater over the geologic past requires the quantification of isotopic effects of Mo accompanying its migration on land and the extent of possible variations in the isotopic composition of Mo entering the ocean.
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2.
  • Maslova, M.V., et al. (författare)
  • Mica behavior in aqueous solutions with pH 3-9
  • 2005
  • Ingår i: Geochemistry International. - 0016-7029 .- 1556-1968. ; 43:7, s. 702-707
  • Tidskriftsartikel (refereegranskat)abstract
    • Muscovite and phlogopite behavior was examined in aqueous solutions with pH 3-9. Mica dissolution was demonstrated to involve ion exchange and adsorption and depend on the acid-basic properties of surface oxides. The rate of mica dissolution is limited by the rate of silicon leaching in acid solutions and by the rate of aluminum leaching in alkaline solutions
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  • Resultat 1-2 av 2
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tidskriftsartikel (2)
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refereegranskat (2)
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Öhlander, Björn (1)
Malinovskiy, Dmitry (1)
Rodushkin, Ilya (1)
Forsling, Willis (1)
Makarov, V.N. (1)
Gerasimova, L G (1)
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Maslova, M. V. (1)
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Luleå tekniska universitet (2)
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Engelska (2)
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