TERMIUM Plus^®

Fiche 1,  Justifications,  Anglais

Record number: 1, Textual support number: 1 DEF

Isotope that has a higher atomic weight than the usual (i.e. most abundant) natural isotope.  1, fiche 1, Anglais, - heavy%20isotope

Record number: 1, Textual support number: 1 CONT

Studies of metabolism, drug utilization, and other reactions in living organisms are best done with stable isotopes like¹³C,¹⁵N,¹⁸O, and²H. Compounds are tagged by introducing a high concentration of the isotope into the molecular structure, and the metabolized products are studied using the mass spectrometer to measure the altered isotopic ratios.  3, fiche 1, Anglais, - heavy%20isotope

Fiche 1,  Justifications,  Français

Record number: 1, Textual support number: 1 DEF

Catégorie d'atomes contenant un nombre de neutrons supérieur à la normale et donc plus denses que l'isotope communément observé (par exemple¹⁵N et¹³C).  1, fiche 1, Français, - isotope%20lourd

Fiche 1,  Justifications,  Espagnol