Summary
An analytical method is described for the determination of the concentration and the isotopic composition of molybdenum in plant samples using thermal ionization mass spectrometry. After microwave acid digestion and liquid-liquid extractive separation with Amberlite LA-2, the molybdenum isotopes are measured as MoO −3 -ions in a quadrupole mass spectrometer. In all cases, the relative standard deviation of the measurements of both natural and spike molybdenum was better than 3% for all ratios measured. The concentration of molybdenum found in three different plant reference materials agreed well with the certified values.
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References
Davis GK (1991) Molybdenum. In: Merian E (ed) Metals and their compounds in the environment. VCH, Weinheim New York Basel Cambridge, pp 1089–1100
Allaway WH (1977) Perspectives on molybdenum in soils and plants. In: Chappell WR (ed) Molybdenum in the environment, Vol 2. Marcel Dekker, New York Basel, pp 317–339
Heumann KG (1988) Isotope dilution mass spectrometry. In: Adams F, Gijbels R, Van Gieken R (eds) Inorganic mass spectrometry, chemical analysis, Vol 95. Wiley, New York Chichester Brisbane Toronto Singapore, pp 301–376
Köppe M, Heumann KG (1988) Fresenius Z Anal Chem 331:118–122
Boness M (1989) Finnigan MAT (personal communication)
Kingston HM, Jassie LB (1988) Introduction to microwave sample preparation. American Chemical Society, Washington
Rao RR, Khopkar SM (1983) Analyst 108:346–352
Kastenmayer P (1984) Herstellung und Isolierung von 97Tc sowie Entwicklung und Anwendung einer massenspektrometrischen Isotopenverdünnungsanalyse zur Technetium-, Molybdän- und Rutheniumspurenanalyse. Dissertation, University of Regensburg, pp 87–90
Seelmann-Eggebert W, Pfennig G, Münzel H, Klewe-Nebenius H (1981) Chart of the nuclides. Kernforschungszentrum Karlsruhe GmbH
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Saumer, M., Gantner, E., Reinhardt, J. et al. Determination of molybdenum in plant reference material by thermal-ionization isotope-dilution mass spectrometry. Fresenius J Anal Chem 344, 109–113 (1992). https://doi.org/10.1007/BF00325124
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DOI: https://doi.org/10.1007/BF00325124