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首页> 外文期刊>Radioprotection >Radionuclide contents and radiological risk to the population due to raw minerals and soil samples from the mining sites of quality ceramic and pottery industries in Akwa Ibom, Nigeria
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Radionuclide contents and radiological risk to the population due to raw minerals and soil samples from the mining sites of quality ceramic and pottery industries in Akwa Ibom, Nigeria

机译：来自尼日利亚阿夸伊博姆的优质陶瓷和陶器采矿场的原始矿物质和土壤样品所产生的放射性核素含量和对居民的放射性风险

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摘要

Samples of domestically produced industrial raw minerals and soil samples from three mining sites of quality ceramic/smelting and pottery industries in Akwa Ibom, Nigeria, were collected and analyzed for their Ra~(226), Th~(232) and nu K contents using gamma-ray spectroscopy. The range of activity concentrations of the radionuclides in the industrial raw minerals were 17.55 +/- 1.63 to 80.99 +/- 2.61 Bq.kg~(-1) for Ra-226, 7.64 +/- 0.77 to 23.94 +/- 0.92 Bq.kg(-1) for Th-232 and 63.22 +/- 3.43 to 503.90 +/- 5.69 Bq.kg~(-1) for K-40, while in the soil samples they varied from 2.87 to 34.78 Bq.kg~(-1), 7.02 to 24.47 Bq.kg~(-1) and 7.05 to 162.81 Bq.kg~(-1) for Ra~(226), Th~(232) and K~(40), respectively. These results, along with the estimated absorbed dose rates, annual effective dose rates, radium equivalent (Ra_(eq)), external hazard index (H_(ex)), internal hazard index (H_(in)) and representative of the gamma index (I_(yr)) are presented. The results obtained were below the internationally accepted safe limits. Therefore, the analyzed samples could be used in the local industries in the area as component raw materials and/or as building materials. Also, the mining activities of these minerals in the area have not significantly affected the natural radiation dose levels in the area, hence the resulting dose to the population is therefore considered generally low.
机译：收集了尼日利亚阿克瓦伊博姆三个优质陶瓷/冶炼和制陶业采矿现场的国产工业原料矿物和土壤样品，并利用以下方法分析了它们的Ra〜（226），Th〜（232）和nu K含量γ射线光谱学。 Ra-226的工业原矿中放射性核素的活动浓度范围为17.55 +/- 1.63至80.99 +/- 2.61 Bq.kg〜（-1），7.64 +/- 0.77至23.94 +/- 0.92 Bq Th-232为.kg（-1），K-40为63.22 +/- 3.43至503.90 +/- 5.69 Bq.kg〜（-1），而在土壤样品中，它们从2.87至34.78 Bq.kg〜 Ra〜（226），Th〜（232）和K〜（40）分别为（-1），7.02至24.47 Bq.kg〜（-1）和7.05至162.81 Bq.kg〜（-1）。这些结果，连同估计的吸收剂量率，年有效剂量率，镭当量（Ra_（eq）），外部危害指数（H_（ex）），内部危害指数（H_（in））和伽玛指数的代表（I_（yr））出现。获得的结果低于国际公认的安全极限。因此，分析后的样品可在该地区的当地工业中用作组分原料和/或建筑材料。同样，这些矿物在该地区的开采活动并未显着影响该地区的自然辐射剂量水平，因此，由此得出的总体剂量被认为是较低的。

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