Adverb
isotopically (not comparable)
With regard to isotopes
Early nuclear reactors did not use isotopically enriched uranium, and in consequence they were required to use large quantities of highly purified graphite as neutron moderation materials. Source: Internet
Concentrations are determined by measuring the ratio of the analyte to the appropriate isotopically labeled internal standard. Source: Internet
However, a pure gold ingot would be both chemically and isotopically pure, since ordinary gold consists only of one isotope, 197 Au. Source: Internet
Here, the proteins within a complex mixture are labeled first isotopically, and then digested to yield labeled peptides. Source: Internet
However it is not isotopically pure since ordinary copper consists of two stable isotopes, 69% 63 Cu and 31% 65 Cu, with different numbers of neutrons. Source: Internet
In particular, the 1997 observation by Skulan and DePaolo citation that calcium minerals are isotopically lighter than the solutions from which the minerals precipitate is the basis of analogous applications in medicine and in paleooceanography. Source: Internet