Low cost of
equipment required is the major advantage of this technique, but
results may be affected by anionic compounds interfering the catalytic
reaction (Kucˇera, 2009). Another analytical technique is the
Neutron Activation Analysis (NAA), which allows a determination
of iodine in a non-destructive manner, although high background
signals, originating from elements such as Na, K, Cl and Br can limit
the applicability of NAA to biological matrices either low in mineral
and/or very high in iodine contents