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000060856 0247_ $$2pmid$$apmid:17962924
000060856 0247_ $$2DOI$$a10.1007/s00216-007-1603-6
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000060856 084__ $$2WoS$$aBiochemical Research Methods
000060856 084__ $$2WoS$$aChemistry, Analytical
000060856 1001_ $$0P:(DE-Juel1)VDB2662$$aBecker, J. S.$$b0$$uFZJ
000060856 245__ $$aMeasuring magnesium, calcium and potassium isotope ratios using ICP-QMS with an octopole collision cell in tracer studies of nutrient uptake and translocation in plants
000060856 260__ $$aBerlin$$bSpringer$$c2008
000060856 300__ $$a571 - 578
000060856 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article
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000060856 440_0 $$08664$$aAnalytical and Bioanalytical Chemistry$$v390$$x1618-2642$$y2
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000060856 520__ $$aThe 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.
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000060856 65320 $$2Author$$acalcium
000060856 65320 $$2Author$$aisotope ratio measurements
000060856 65320 $$2Author$$aICP-QMS
000060856 65320 $$2Author$$amagnesium
000060856 65320 $$2Author$$anutrient uptake and transport
000060856 65320 $$2Author$$aoctopole collision
000060856 65320 $$2Author$$areaction cell
000060856 65320 $$2Author$$aplants
000060856 65320 $$2Author$$apotassium
000060856 65320 $$2Author$$atracer experiments
000060856 7001_ $$0P:(DE-Juel1)VDB28681$$aFüllner, K.$$b1$$uFZJ
000060856 7001_ $$0P:(DE-Juel1)VDB68545$$aSeeling, U.D.$$b2$$uFZJ
000060856 7001_ $$0P:(DE-HGF)0$$aFornalczyk, G.$$b3
000060856 7001_ $$0P:(DE-Juel1)129349$$aKuhn, A. J.$$b4$$uFZJ
000060856 773__ $$0PERI:(DE-600)1459122-4$$a10.1007/s00216-007-1603-6$$gVol. 390, p. 571 - 578$$p571 - 578$$q390<571 - 578$$tAnalytical and bioanalytical chemistry$$v390$$x1618-2642$$y2008
000060856 8567_ $$uhttp://dx.doi.org/10.1007/s00216-007-1603-6
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000060856 9131_ $$0G:(DE-Juel1)FUEK407$$bErde und Umwelt$$kP24$$lTerrestrische Umwelt$$vTerrestrische Umwelt$$x0
000060856 9141_ $$y2008
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000060856 9201_ $$0I:(DE-Juel1)ICG-3-20090406$$d31.10.2010$$gICG$$kICG-3$$lPhytosphäre$$x1
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