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首页> 外文期刊>Romanian journal of physics >Determination of the Radioactivity Levels and Heavy Metals Content of the Local Natural Rocks Widely Used as Raw Materials in Industry
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Determination of the Radioactivity Levels and Heavy Metals Content of the Local Natural Rocks Widely Used as Raw Materials in Industry

机译：测定工业上广泛用作原材料的当地天然岩石的放射性水平和重金属含量

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In this paper we present the results obtained by performing various high quality analyses on different types of natural rocks (calcareous, silico-aluminous, volcanic) extracted in Romania and used as raw materials in various industries such is that of building materials production. According to European and National legislations, the materials used in residential buildings constructions must be tested from the point of view of the hazard risk associated to human health. In this direction, radioactivity and heavy metals contents were determined. The measurements were performed within CPRLAB, Horia Hulubei National Institute for Physics and Nuclear Engineering (IFIN-HH). Six different types of raw materials (marl, gypsum, clay, limestone, sand and volcano tuff) from different sites and four types of residues derived from processing them (mining sterile, fly ash) were analysed. The radioactivity measurements were performed by using a high resolution HPGe gamma-ray spectrometry system. The heavy metals content was determined by using Atomic Absorption Spectroscopy (AAS). The determined activity concentrations of the natural occurring radioactive materials (NORM) embedded in the tested samples were found to be as follows: 28–217 Bq/kg for 226Ra, 5.7–80 Bq/kg for 232Th (228Ac) and 39–560 Bq/kg for 40K. The gamma index and the radium equivalent activity were also estimated. The heavy metals found in the studied samples were the following ones: Cr, Cu, Fe, Pb, Zn and Co.
机译：在本文中，我们介绍了通过对罗马尼亚开采并用作建筑材料生产等各个行业的原材料的不同类型的天然岩石（钙质，硅铝质，火山岩）进行各种高质量分析而获得的结果。根据欧洲和国家法律，必须从与人类健康相关的危害风险的角度对住宅建筑中使用的材料进行测试。在这个方向上，确定了放射性和重金属含量。测量在CPRLAB，霍里亚·胡鲁贝国家物理和核工程研究所（IFIN-HH）中​​进行。分析了来自不同地点的六种不同类型的原料（泥灰石，石膏，粘土，石灰石，沙子和火山凝灰岩），以及来自于加工它们的四种残渣类型（开采无菌粉煤灰）。放射性测量是通过使用高分辨率HPGe伽马射线能谱系统进行的。重金属含量通过使用原子吸收光谱法（AAS）测定。发现被测样品中嵌入的天然放射性物质（NORM）的确定的活性浓度如下：226Ra为28-217 Bq / kg，232Th（228Ac）和5.7-80 Bq / kg 39-560 Bq / kg for 40K。还估计了γ指数和镭当量活性。研究样品中发现的重金属为：铬，铜，铁，铅，锌和钴。

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