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Diffusion Isotope Effects in Isotope Mixtures
Berichte der Bunsengesellschaft für physikalische Chemie, 1972AbstractThe tracer diffusion of deuterium and tritium in the β‐phase of PdHn has been measured by means of special techniques, the time lag method with mass spectrometer or counter tube as detector, and the decay function of isotope exchange. It has been found that D atoms as tracer in β‐PdHn, i.e.
G. Sicking, E. Wicke, E. Gans, B. Bonn
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Terra Nova, 1998
The closure of isotopic chronometers to loss or exchange of radiogenic daughters is best analysed in terms of phenomena that induce recrystallization, i.e. fluid circulation and strain. In the presence of these fast phenomena, temperature is not a rate‐controlling parameter for isotope transport. Only in those rare instances where no fast mechanism can
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The closure of isotopic chronometers to loss or exchange of radiogenic daughters is best analysed in terms of phenomena that induce recrystallization, i.e. fluid circulation and strain. In the presence of these fast phenomena, temperature is not a rate‐controlling parameter for isotope transport. Only in those rare instances where no fast mechanism can
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Stable isotopes of carbon and nitrogen in the study of avian and mammalian trophic ecology
, 2000Differential fractionation of stable isotopes of carbon during photosynthesis causes C 4 plants and C3 plants to have distinct carbon-isotope signatures. In addition, marine C 3 plants have stable-isotope ratios of carbon that are intermediate between C4
J. Kelly
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Stable isotopes in ecology and environmental science
, 1995Contributors. Abbreviations. Introduction. 1. Stable isotope chemistry and measurement: a primer. Elizabeth W. Sulzman. Introduction. What isotopes are, what makes them distinct. Properties of ecologically useful stable isotopes.
R. Michener, K. Lajtha
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Non-Traditional Stable Isotopes: Retrospective and Prospective
, 2017Traditional stable isotope geochemistry involves isotopes of light elements such as H, C, N, O, and S, which are measured predominantly by gas-source mass spectrometry (Valley et al. 1986; Valley and Cole 2001).
F. Teng, N. Dauphas, J. Watkins
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A timeline of stable isotopes and mass spectrometry in the life sciences
Mass Spectrometry Reviews, 2017This review retraces the role of stable isotopes and mass spectrometry in the life sciences. The timeline is divided into four segments covering the years 1920-1950, 1950-1980, 1980-2000, and 2000 until today.
W. Lehmann
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The British Journal of Radiology, 1958
This unit for dispensing radioactive liquids has been designed to reduce the radiation hazard in handling the weekly consignment of 131I, which usually amounts to 100 mc. The problem was to extract the active liquid from the standard Amersham bottle and to prepare a stock solution from which desired amounts could be dispensed. The apparatus is shown in
A. Sivyer +4 more
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This unit for dispensing radioactive liquids has been designed to reduce the radiation hazard in handling the weekly consignment of 131I, which usually amounts to 100 mc. The problem was to extract the active liquid from the standard Amersham bottle and to prepare a stock solution from which desired amounts could be dispensed. The apparatus is shown in
A. Sivyer +4 more
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Groundwater Geochemistry and Isotopes
, 2015Groundwater Geochemistry and Isotopes Introduction Water, Rocks, and Solutes The Nature of Water Solutes in Water From Elements to Aquifers Problems Thermodynamics of Aqueous Systems Introduction Mass Action Ion Activity and Equilibrium Constants ...
I. Clark
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, 2017
The properties of the oxygen isotopes provide diverse examples of progress made in experiments and theory. This chain of isotopes has been studied from beyond the proton drip line in 12O to beyond the neutron drip line in 25,26O. This short survey starts
Alex Brown
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The properties of the oxygen isotopes provide diverse examples of progress made in experiments and theory. This chain of isotopes has been studied from beyond the proton drip line in 12O to beyond the neutron drip line in 25,26O. This short survey starts
Alex Brown
semanticscholar +1 more source