A set of measurements have been conducted to determine the levels activity of gamma-emitters present in infant formula. The study of different samples shows the presence of the following ...radionuclides:
226
Ra,
232
Th and
40
K with respectively average activity of 0.52 ± 0.087, 0.51 ± 0.062, 371.98 ± 3.68 Bq/kg. The mean annual doses lead to 0.62 and 0.24 mSv/year whereas the total risk is about 7.91 × 10
−6
and 5.32 × 10
−6
respectively ≤ 1 year and 1–2 years old infants. The obtained results show that no significant radiation dose and no risk to the infants due to consumption of these milks.
A set of measurements have been carried out in order to determine the activity-levels in some powdered milks available in Tunisia. The study has shown that the average activity is about 160 ± 19 and ...2.26 ± 0.5 Bq/kg respectively for
40
K and
137
Cs, whereas it is below the detection limit for
226
Ra and
232
Th. The mean annual ingestion dose is about 102 and 225
μ
Sv
/
y
for respectively ≤ 1 year and 1–2 years old infants. The calculation of the radiological risk show that no significant threat on the infant’s health due to consumption of these milks.
The gamma flux rate generated by the Tunisian National Nuclear Sciences Center
60Co gamma irradiator is shown to be equivalent, within less than one percent discrepancy, to that of a unique pencil of ...equal height and equal activity placed along the source symmetry axis.
► We calculate the gamma flux rate, generated by a
60Co gamma irradiator. ► This irradiator is placed along the source symmetry axis. ► This flux rate is equivalent to that generated by a unique pencil. ► discrepancy between the two calculations is less than 1%.
The gamma flux rate generated by the Tunisian National Nuclear Sciences Center super(60Co gamma irradiator is shown to be equivalent, within less than one percent discrepancy, to that of a unique ...pencil of equal height and equal activity placed along the source symmetry axis.)
