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Radiological Comparative Analysis of Differently Reared Chicken Meat from Gold Mining and Non-Gold Mining Corridors |
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PP: 33-38 |
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doi:10.18576/jrna/030104
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Author(s) |
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Amodu F.R.,
Ben Festus,
Ayinde S. A.,
Ugwu N. U.,
Giwa, K. W.,
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Abstract |
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| This study was carried out to determine the distinction between activity concentration of naturally occurring radionuclide (40K, 226R and 232Th) in free-range and cage type chicken meat reared and consumed in Ede, a non-mining area and Ilesha (Iperindo) a gold mining area of Osun State, south western Nigeria. Measurement was carried out by means of gamma spectroscopy technique centered on NaI(Tl). This was with a view of to determine the health implication of the populace. The mean activity concentration of 40K, 226Ra and 232Th were evaluated on chicken meat and organs were evaluated to be 51.14Bq/kg, 68.25Bq/kg and 55.99Bq/kg for free range type in Ede; also 54.69Bq/kg, 74.05Bq/kg and 69.12Bq/kg for free range in Ilesha (Iperindo). The mean activity concentration of 40K, 226Ra and 232Th also evaluated in chicken meat and organs of cage type in Ede were found to be 39.81Bq/kg, 72.47 Bq/kg and 49.11Bq/kg in addition to that of Ilesha cage type were 42.00 Bq/kg, 126.04 Bq/kg and 93.92 Bq/kg respectively. The global average activity concentration of 40K, 226Ra and 232Th in food consumption by UNSCEAR was 412 Bq/kg, 32 Bq/kg and 45 Bq/kg. However, comparison with these values, obviously showed that the means activity concentration of 226Ra and 232Th in chicken meat and organs in both categories reared and consumed in Ede and Ilesha exceeds the standard limit, but the mean activity concentration of 40K was found lower. Estimation of annual effective dose through ingestion of radionuclides was also evaluated. The mean annual effective dose due to the ingestion of the three natural radionuclides through consumption of heart, beef, gizzard and liver in Ede both free and age type were found to be 35.69 ± 6.5 µSvyr-1, 32.96 ±3.16 µSvyr-1, 25.58 ± 8.18 µSvyr-1 and 30.54 ± 0.61 µSvyr-1 respectively while that of Iperindo were 36.48±0.72 µSvyr-1, 49.54±10.86 µSvyr-1, 58.88±29.28 µSvyr-1, and 36.18± 0.14 µSvyr-1 respectively. The evaluated mean annual dose from the highlighted radionuclides in chicken meat and organs of both types in two study areas were lower than the FAO dose limit of 72.1 µSvyr-1 |
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