V. Zaichick et S. Zaichick, INAA applied to halogen (Br and I) stability in long-term storage of lyophilized biological materials, J RAD NUCL, 244(2), 2000, pp. 279-281
Instrumental neutron activation analysis (INAA) was used to determine the B
r and I concentration in the same ten lyophilized and homogenized human thy
roid samples prior and after a 20-year storage at room temperature. It was
found that long-term storage had no effect on the iodine content. At the sa
me time, the bromine content was about 2-fold lower (p<0.01). It was assume
d that possible losses of other halogens can occur under long-term storage
of lyophilized biological materials at room temperature.