Abstract
The present study ascertain radionuclide activity levels that are available in fruits, investigate possible risks that are connected with consuming these fruits and the need to determine radiation exposure level in humans due to consuming these fruits from Niger Delta. Radionuclides’ activity concentration in fruits is essential for the determination of radiological parameters and protection of human health.Fruits can be radioactive due to the presence of naturally occurring radioactive materials (NORMs) and technically enhanced radioactive materials (TENORMs) in the environment. The Radionuclide activity concentration and Radiological parameters of Some Fruits from Niger Delta, Nigeria was determined by using gamma ray spectroscopy. The study measured the activity concentration of radionuclides in fruits and the results showed that the total activity concentration of 40K, 232Th and 226Ra in fruits were 578.24 Bqkg-1, 263.84 Bqkg-1and 128.35 Bqkg-1 respectively. The study found out that 40K is the radionuclide with the highest value of activity concentration while apricot fruit has the highest valueof radionuclide concentration compared to other fruits. The statistical analysis of data was also done using statistical packages. The radiological parameters, such as the annual effective dose AED for Infants, Children and Adults due to the radioactivity in Avocado, Apricot, Guava and Pear were; 829.02 \(\mu\)Svy-1, 565.865 \(\mu\)Svy-1, and 838.725 \(\mu\)Svy-1, 2737.665 \(\mu\)Svy-1, 4361.4875 \(\mu\)Svy-1 and 2497.9025 \(\mu\)Svy-1, 651.20833 \(\mu\)Svy-1, 1202.6767 \(\mu\)Svy-1and 813.22167 \(\mu\)Svy-1, and 1164.7883 \(\mu\)Svy-1, 1724.2933 \(\mu\)Svy-1 and 1088.8933 \(\mu\)Svy-1 respectively. The estimated AED due to the consumption of various fruits were above world value. However, the estimated excess lifetime cancer risks for the various fruits are far below the world (WHO) limit. According to the study's findings, there is no cancer risk associated with eating fruits in the study area, and fruits with tap root systems had the highest concentrations of radionuclide activity.
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