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首页> 外文期刊>Nuclear Science >Measurement of Radioactivity Levels and Assessment of Radiation Hazards for Plants Species Grown at Scrap Yard (B) at Al-Tuwaitha Nuclear Site (Iraq)
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Measurement of Radioactivity Levels and Assessment of Radiation Hazards for Plants Species Grown at Scrap Yard (B) at Al-Tuwaitha Nuclear Site (Iraq)

机译：Al-Tuwaitha核基地（伊拉克）的废料场生长的植物物种的放射性水平测量和辐射危害评估（B）

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Samples of flowered grasses, herbs and jungles were collected from scrap yard (B) at Al-Tuwaitha Nuclear Site and analyzed in the laboratory using gamma-ray spectroscopy system. The activity concentrations for radionuclides grown on the studied area were found to be ranged from 1.05 to 5.45 Bq/kg (average 2.86 Bq/kg) for ~(226)Ra, below detection limit (BDL) to 1.4 Bq/kg (average 0.16 Bq/kg) for ~(232)Th, 483.2 to 595.7 Bq/kg (average 528.33 Bq/kg) for ~(40)K, and BDL to 1.15 Bq/kg (average 0.35 Bq/kg) for ~(235)U. No radionuclides of artificial origin (such as ~(137)Cs) were detected in any of the analyzed samples. Gamma absorbed dose rates (D), radium equivalent activities (Ra_(eq)), external hazard index (H_(ex)), and internal hazard index (H_(in)) were calculated and found to be considerably lower than their corresponding allowable limits and worldwide average values. Accordingly, it was found that natural radioactivity levels for the investigated plants species grown at the studied area pose no significant radiological threat to human health or the environment.
机译：从Al-Tuwaitha核电站的废料场（B）收集了开花的草，草药和丛林的样品，并在实验室中使用了伽马射线光谱系统进行了分析。发现在研究区域上生长的放射性核素的活性浓度范围为〜（226）Ra，范围为1.05至5.45 Bq / kg（平均2.86 Bq / kg），低于检出限（BDL）至1.4 Bq / kg（平均0.16） 〜（232）Th的Bq / kg），〜（40）K的483.2至595.7 Bq / kg（平均528.33 Bq / kg）和〜（235）的BDL至1.15 Bq / kg（平均0.35 Bq / kg） 。在任何分析样品中均未检测到人工来源的放射性核素（例如〜（137）Cs）。计算出伽马吸收剂量率（D），镭当量活度（Ra_（eq）），外部危害指数（H_（ex））和内部危害指数（H_（in）），发现它们大大低于其相应的允许值限值和全球平均值。因此，发现在研究区域生长的被研究植物物种的自然放射性水平对人类健康或环境没有明显的放射学威胁。

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