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ANALYSE ISOTOPIQUE [9 records]

Record 1 2017-12-29

English

Subject field(s)
  • Chemistry
DEF

A method of isotope dilution analysis in which the final isotopic abundance is estimated from the amount of the nuclide present in a known quantity of the relevant element separated from the sample, where this quantity is smaller than the total amount of that element present in the sample.

French

Domaine(s)
  • Chimie
DEF

Méthode d'analyse par dilution isotopique qui évalue la teneur isotopique finale d'un élément, préalablement isolé de l'échantillon, en fonction de la quantité de nucléide qui s'y trouve.

Spanish

Save record 1

Record 2 2015-05-20

English

Subject field(s)
  • Chemistry
  • Paleontology

French

Domaine(s)
  • Chimie
  • Paléontologie

Spanish

Save record 2

Record 3 2014-06-04

English

Subject field(s)
  • Scientific Instruments
  • Equipment (Chemistry)
  • Analytical Chemistry
CONT

... the development and construction of a prototype hydrogen isotope mass spectrometer. The goal of the program was to develop a reliable, affordable mass spectrometer capable of accurately analyzing: mixtures of the hydrogen and helium isotopes regardless of the equilibrium state of the hydrogen isotopes ...

French

Domaine(s)
  • Instruments scientifiques
  • Équipement (Chimie)
  • Chimie analytique

Spanish

Save record 3

Record 4 2011-12-12

English

Subject field(s)
  • Scientific Measurements and Analyses
  • Radiation Protection
  • Geophysics
CONT

Geochronology questions. Solari and Schaff are generally critical of our geochronologic methods because the uncertainties of LA-ICPMS (Laser-Ablation, Inductively Coupled Plasma Mass Spectrometry) analyses are greater than the errors that they and others have generated by ID-TIMS (Isotope Dilution - Thermal Ionization Mass Spectrometry) analysis.

OBS

isotope dilution thermal ionization mass spectrometry (ID-TIMS) analysis: term and shortened form used at Natural Resources Canada - Earth Sciences Sector.

French

Domaine(s)
  • Mesures et analyse (Sciences)
  • Radioprotection
  • Géophysique
OBS

analyse par dilution isotopique et spectrométrie de masse à thermoionisation : terme en usage à Ressources naturelles Canada - Secteur des sciences de la Terre.

Spanish

Save record 4

Record 5 2010-07-20

English

Subject field(s)
  • Chemistry
DEF

A method of quantitative analysis based on the measurement of the isotopic abundance of a nuclide after isotopic dilution with the sample to be analysed.

French

Domaine(s)
  • Chimie
DEF

Méthode d'analyse quantitative fondée sur la mesure de la teneur isotopique d'un nucléide après dilution isotopique avec l'échantillon qui doit être analysé.

Spanish

Save record 5

Record 6 2009-11-17

English

Subject field(s)
  • Analytical Chemistry
  • Atomic Physics

French

Domaine(s)
  • Chimie analytique
  • Physique atomique
CONT

[...] l'analyse par activation peut être appliquée à la dilution isotopique lorsqu'un élément possède au moins deux isotopes stables susceptibles de donner par irradiation deux radio-isotopes identifiables et mesurables, si possible par spectrométrie [gamma]. La méthode, désignée sous le sigle SIDAA (stable isotope dilution activation analysis) peut être utilisée pour déterminer une dizaine d'éléments dont quatre simultanément par irradiation aux photons [gamma].

Spanish

Save record 6

Record 7 2005-08-05

English

Subject field(s)
  • Geophysics

French

Domaine(s)
  • Géophysique

Spanish

Save record 7

Record 8 2005-05-05

English

Subject field(s)
  • Scientific Measurements and Analyses
  • Geochemistry
  • Translation (General)
Key term(s)
  • S isotopic evidence
  • sulfur isotope evidence
  • sulfur isotopic evidence

French

Domaine(s)
  • Mesures et analyse (Sciences)
  • Géochimie
  • Traduction (Généralités)

Spanish

Save record 8

Record 9 - external organization data 2002-03-27

English

Subject field(s)
  • Atomic Physics
  • Nuclear Physics
  • Geochemistry
  • Compartment - Canadian Nuclear Safety Commission
DEF

Determination of the concentration of different isotopes in a sample of a chemical element.

CONT

U/Pb isotope analyses of ore from the main pod of the Cigar Lake deposit indicated an age 1.3 Ga ...

OBS

[Isotopic analysis] is usually accomplished by mass spectrography.

French

Domaine(s)
  • Physique atomique
  • Physique nucléaire
  • Géochimie
  • Tiroir - Commission canadienne de sûreté nucléaire
DEF

Détermination des teneurs isotopiques.

Spanish

Save record 9

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