Μετρήσεις ραδιενέργειας σε γαλακτοκομικά προϊόντα και τρόφιμα φυτικής προέλευσης (Bachelor thesis)
Αναστασόπουλος, Κωνσταντίνος
From the point of view of radioprotection observation (follow-up) of the levels of radioactivity is
necessary, because of the negative consequences of radiation on the human organism. The
main sources of natural radioactivity in our environment are the series of 238U, and 232Th
together with their daughter radionuclides, as well as 40Κ, while 137Cs is one of the artificial
radionuclides found in nature, important due to its long half-life. These radionuclides manage to
get in the human body through diet. In this Paper the concentration of these radionuclides has
been estimated in dairy products and vegetables produced in Greece. Food samples from
various districts of our country were collected and analyzed through gamma spectroscopy in
order that concentrations of the prementioned radionuclides in them be calculated. Although in
the majority of our samples radioactivity due to the 238U, 232Th and 137Cs was not traced, in some
cases it was found but in very low concentrations.On the contrary, detectable concentrations of
radioactivity due to 40Κ were found in most foods, with higher values in the peanuts of Aegina
island (257 Bq/Kg), in sow thistles -Sonchus oleraceus- (253Bq/Kg) and in almonds (198 Bq/Kg).
The lowest concentrations of activity due to 40Κ were traced in diary products (12-38 Bq/Kg) and
in flour (23 Bq/Kg). Based on these concentrations and on the Mediterranean Diet
recommendations, the annual per capita radioactivity due to the reffered foods was calculated
for 40Κ. Νext, the annual equivalent dose for 40Κ was calculated. The overall annual equivalent
dose taken by the average adult is estimated 0,09 mSv/year, the largest contribution coming
from dairy and bananas (0,02 and 0,03 mSv/year respectively)
Institution and School/Department of submitter: | Σχολή Τεχνολόγων Γεωπόνων και Τεχνολογίας Τροφίμων και Διατροφής / Τμήμα Διατροφής και Διαιτολογίας |
Keywords: | ραδιενέργεια τροφίμων;ελληνικά προϊόντα;γ-φασματοσκοπία;ενεργότητα;ισοδύναμη δόση;radioactivity in foods;Greek products;gamma ray spectrometry;concentration of activity;equivalent dose |
Description: | Πτυχιακή εργασία--ΣΤΕΤΡΟΔ-Τμήμα Διατροφής και Διαιτολογίας, 2018--9907 |
URI: | http://195.251.240.227/jspui/handle/123456789/11517 |
Appears in Collections: | Πτυχιακές Εργασίες |
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