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Elemental analysis of marble used in Saudi Arabia by different nuclear analytical techniques

机译：通过不同的核分析技术对沙特阿拉伯使用的大理石进行元素分析

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Instrumental neutron activation analysis (INAA) and HPGe detector ??-spectroscopy were used to determine a total of 22 elements qualitatively and quantitatively for the first time from marble rock samples collected from local markets in Saudi Arabia. The elements determined are Mg, Ca, V, Na, Mn, As, La, Sm, U, Sc, Cr, Fe, Co, Zn, Sn, Ba, Ce, Eu, Yb, Lu, Hf, and Th. The samples were properly prepared together with their standard reference material and simultaneously irradiated by thermal neutrons at the TRIGA Mainz research reactor at a neutron flux of 7??1011n/cm2s. XRF was also used. The concentrations of natural radionuclides 226Ra, 232Th and 40K were also determined by gamma ray spectroscopy to estimate the radiological parameters such as radium equivalent activity, and the external hazard index was calculated to estimate the exposure risk from usage of marble as raw materials in construction. For the sake of comparison the results of concentration levels and radium equivalent activities are compared with similar studies carried out in other countries. ? 2012 Elsevier Ltd.
机译：使用仪器中子活化分析（INAA）和HPGe检测器γ光谱法首次从沙特阿拉伯当地市场收集的大理石岩石样品中定性和定量地确定了总共22种元素。确定的元素为Mg，Ca，V，Na，Mn，As，La，Sm，U，Sc，Cr，Fe，Co，Zn，Sn，Ba，Ce，Eu，Yb，Lu，Hf和Th。样品与标准参考物质一起正确制备，并同时在TRIGA Mainz研究反应堆中被热中子以7〜1011n / cm2s的中子通量照射。还使用了XRF。还通过伽马射线光谱法确定了天然放射性核素226Ra，232Th和40K的浓度，以估算放射学参数，例如镭的当量活性，并计算了外部危害指数，以估算使用大理石作为建筑材料的暴露风险。为了进行比较，将浓度水平和镭当量活动的结果与其他国家进行的类似研究进行了比较。 ？ 2012爱思唯尔有限公司

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