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A new method for determining the concentration of vanadyl ions in clays

• Geologica Carpathica
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• Volume 62 No.2 / April 2011

Published: Apr 2011

Pages: 181 - 186

DOI: https://doi.org/10.2478/v10096-011-0015-x

Authors: PAVLE I. PREMOVIC, BUDIMIR S. ILIC, DRAGAN M. DORDEVIC

Abstract: A novel and simple method for quantitatively determining the concentration of vanadyl ions in clays using electron spin resonance data has been developed. Several vanadyl standards with concentrations between 200–1000 ppm were prepared in a mixture of glycerol and kaolinite (KGa-2). The anisotropic electron spin resonance (ESR) spectra were recorded at room temperature, and the specific intensity of the line (attributed to nuclear spin m =–5/2||) was determined. For vanadyl concentrations between 50 ppm and 200 ppm, the standards must be prepared by mixing kaolinite with known vanadyl content (FBT2A-03) and kaolinite (GB1) containing no vanadyl. The method is applicable without modification to other clays and clay-rich sediments containing vanadyl ions. The whole procedure is very suitable for routine work.

Keywords: clay, kaolinite, vanadyl, determination, electron spin resonance

Volume 62 no. 2 / April 2011

• MILADA VAVRDOVA, JIRINA DASKOVA

  Middle Devonian palynomorphs from southern Moravia: an evidence of rapid change from terrestrial deltaic plain to carbonate platform conditions

• MILAN SYKORA, MILOS SIBLIK, JAN SOTAK

  Siliciclastics in the Upper Triassic dolomite formations of the Krizna Unit (Mala Fatra Mountains, Western Carpathians): constraints for the Carnian Pluvial Event in the Fatric Basin

• MARTA OSZCZYPKO-CLOWES, NESTOR OSZCZYPKO

  Stratigraphy and tectonics of a tectonic window in the Magura Nappe (Swiatkowa Wielka, Polish Outer Carpathians)

• WIESKE E. PAULISSEN, STEFAN M. LUTHI, PATRICK GRUNERT, STJEPAN CORIC, MATHIAS HARZHAUSER

  Integrated high-resolution stratigraphy of a Middle to Late Miocene sedimentary sequence in the central part of the Vienna Basin

• VAHID AHADNEJAD, ANN MARIE HIRT, MOHAMMAD-VALI VALIZADEH, SAEED JABBARI BOKANI

  The ammonium content in the Malayer igneous and metamorphic rocks (Sanandaj-Sirjan Zone, Western Iran)

• PAVLE I. PREMOVIC, BUDIMIR S. ILIC, DRAGAN M. DORDEVIC

  A new method for determining the concentration of vanadyl ions in clays