% IMPORTANT: The following is UTF-8 encoded.  This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.

@ARTICLE{Becker:60856,
      author       = {Becker, J. S. and Füllner, K. and Seeling, U.D. and
                      Fornalczyk, G. and Kuhn, A. J.},
      title        = {{M}easuring magnesium, calcium and potassium isotope ratios
                      using {ICP}-{QMS} with an octopole collision cell in tracer
                      studies of nutrient uptake and translocation in plants},
      journal      = {Analytical and bioanalytical chemistry},
      volume       = {390},
      issn         = {1618-2642},
      address      = {Berlin},
      publisher    = {Springer},
      reportid     = {PreJuSER-60856},
      pages        = {571 - 578},
      year         = {2008},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {The ability of a quadrupole-based ICP-MS with an octopole
                      collision cell to obtain precise and accurate measurements
                      of isotope ratios of magnesium, calcium and potassium was
                      evaluated. Hydrogen and helium were used as
                      collision/reaction gases for ICP-MS isotope ratio
                      measurements of calcium and potassium in order to avoid
                      isobaric interference with the analyte ions from (mainly)
                      argon ions 40Ar+ and argon hydride ions 40Ar1H+. Mass
                      discrimination factors determined for the isotope ratios
                      25Mg/24Mg, 40Ca/44Ca and 39K/41K under optimized
                      experimental conditions varied between 0.044 and 0.075. The
                      measurement precisions for 25Mg/24Mg, 40Ca/44Ca and 39K/41K
                      were found to be $0.09\%,$ $0.43\%$ and $1.4\%,$
                      respectively. This analytical method that uses ICP-QMS with
                      a collision cell to obtain isotope ratio measurements of
                      magnesium, calcium and potassium was used in routine mode to
                      characterize biological samples (nutrient solution and small
                      amounts of digested plant samples). The mass spectrometric
                      technique was employed to study the dynamics of nutrient
                      uptake and translocation in barley plants at different root
                      temperatures (10 degrees C and 20 degrees C) using enriched
                      stable isotopes (25Mg, 44Ca and 41K) as tracers. For
                      instance, the mass spectrometric results of tracer
                      experiments demonstrated enhanced 25Mg and 44Ca uptake and
                      translocation into shoots at a root temperature of 20
                      degrees C 24 h after isotope spiking. In contrast, results
                      obtained from 41K tracer experiments showed the highest 41K
                      contents in plants spiked at a root temperature of 10
                      degrees C.},
      keywords     = {J (WoSType)},
      cin          = {ICG-3 / ZCH},
      ddc          = {540},
      cid          = {I:(DE-Juel1)ICG-3-20090406 / I:(DE-Juel1)ZCH-20090406},
      pnm          = {Terrestrische Umwelt},
      pid          = {G:(DE-Juel1)FUEK407},
      shelfmark    = {Biochemical Research Methods / Chemistry, Analytical},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:17962924},
      UT           = {WOS:000252170400015},
      doi          = {10.1007/s00216-007-1603-6},
      url          = {https://juser.fz-juelich.de/record/60856},
}