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Determination of Natural Radioactivity in Nuts and Seeds and their Radiological Implications in the Human Body

Authors: Onjefu. S A; Wilika, N P; Hitila, M; Kamunda, C; Hamunyela, R H; Asuquo, S O; Ejembi, E; +2 Authors

Determination of Natural Radioactivity in Nuts and Seeds and their Radiological Implications in the Human Body

Abstract

ABSTRACT Naturally occurring radionuclides in nuts and seeds commonly consumed in Windhoek, Namibia were examined. This was done by measuring the activity concentrations of 40K, 226Ra and 232Th in these nuts and seeds resulting in the determination of their associated radiological hazards. Ten samples of nuts and seeds of different species were purchased from shop outlets around Windhoek and a gamma ray spectrometer was used to determine their activity levels. The average activity concentration of the radionuclides 40K and 226Ra were found to be 101.295.55 Bq/kg and 0.80 0.35 Bq/kg respectively, 226Ra was only found in some samples. 40K was found to be very high in most of the samples with the maximum specific activity of 122.22Bq/kg in almond nuts. The maximum specific activity of 226Ra was found to be 4.19 Bq/kg in cashew nuts. However, this did not exceed the permissible limit. The specific activity of 232Th was Below Detection Limit (BDL) in all the samples. The annual effective dose equivalent in all samples was found to be below the limit of 1mSvy-1. All the radiological assessments made in this study showed that there were no radiological risks associated with the ingestion of nuts and seeds sold in Namibia.

Keywords

Seeds, Natural radioactivity, Nuts, Radiological hazards, Annual effective dose

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This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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