TITLE:
Accumulation of Natural Radionuclides by Some Edible Wild Mushrooms in Ekiti State, Southwestern, Nigeria
AUTHORS:
E. B. Faweya, M. J. Ayeni, J. Kayode
KEYWORDS:
Mushrooms, Radioactivity, Gamma, Ekiti, Nigeria
JOURNAL NAME:
World Journal of Nuclear Science and Technology,
Vol.5 No.2,
April
20,
2015
ABSTRACT: Activity concentrations of primordial radionuclides such as 40K, 226Ra and 232Th were determined in edible mushrooms
samples in Ekiti State Nigeria. The edible mushrooms collected are Termitomyces
striatus, Psathyrella
atroumbonata, Termitomyces robustus, Pleurotus tuber-regium and Pleurotus squarrosulus. The activity measurements were carried out
by gamma spectrometry. The average concentrations of 40K varied from
254.17 ± 46.78 to 416.07 ± 68.43 Bq·kg-1, 226Ra
concentrations varied from 2.68 ± 0.82 to 21.64 ± 7.23 Bq·kg-1 and 232Th concentrations varied from 8.57 ± 3.25 to 10.98 ± 4.31 Bq·kg-1.
The concentrations were converted to effective dose. Effective doses calculated
were found to be below maximum permissible levels. Therefore, no health risk is
envisaged for those that normally consumed these mushrooms.