substoichiometric isotope dilution analysis
A kind of @I03323@ in which the final @I03332@ is estimated from the amount of the @N04257@ present in a known quantity of the relevant element separated from the @T06284@, where this quantity is smaller than the total amount of that element present in the @T06284@.
PAC, 1994, 66, 2513. (Nomenclature for radioanalytical chemistry (IUPAC Recommendations 1994)) on page 2521 [Terms] [Paper]