In: Nursing
The names of preparations listed in Eu.Phar as monographs
Tests are -
• Either tests A and C or tests B and C may be applied.
A. Record the gamma-ray spectrum using a suitable instrument with a
sample of fluorine-18, suitably diluted if needed. The spectrum is
concordant with the reference spectrum of a specimen of fluorine-18
in that it exhibits a major peak of 511 keV, maximum of 633 keV. A
sum peak of 1020 keV may also be seen depending on geometry and
detector efficiency. Standardized fluorine-18 solutions are
available from laboratories recognized by the relevant national or
regional authority.
B. The half-life determined using a suitable detector system is
between 105 and 115 minutes.
C. Examine the radiochromatogram obtained in the test for
radiochemical purity. The distribution of the radioactivity
contributes to the identification of the preparation.