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首页> 外文会议>2011 3rd International Symposium Exhibition in Sustainable Energy Environment >Measurement of natural radioactivity levels in soil samples in research station at National Park area in Malaysia
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Measurement of natural radioactivity levels in soil samples in research station at National Park area in Malaysia

机译：马来西亚国家公园地区研究站土壤样品中自然放射性水平的测量

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Taman Negara or National Park is a reserve for natural or semi natural land and restricted from most development. In this area, depending on the geological condition of the surrounding, it may contain some natural radionuclides which emit certain amount or levels of radiation In this study natural radionuclides (226Ra, 228Ra and 40K) activity concentrations in soil and the corresponding surface doses at eleven locations around UiTM-Perhilitan Research Station Taman Negara, Pahang were determined to assess the possible radiation hazard to visitors in that area. The gamma activities and the surface doses were determined using high resolution gamma-ray spectrometer and portable radiation survey meter. The mean activity concentrations in the area for 226Ra, 228Ra and 40K are 99.13 Bq/kg, 139.98 Bq/kg and 598.24 Bq/kg respectively, while on average the doses are 0.215 μSv/hr on the ground and 0.193 μSv/hr at one meter from ground. The activities were higher than world average and doses were in the ranges, while radiation hazard indices were slightly greater than unity in four locations.
机译：塔曼·纳加拉（Taman Negara）或国家公园（National Park）是自然或半自然土地的保护区，受大多数开发项目的限制。在该区域中，根据周围的地质条件，它可能包含一些放射出一定量或一定水平的天然放射性核素。在本研究中，天然放射性核素（ 226 Ra， 228 Ra和 40 K）活性浓度以及相应的表面剂量，以评估该地区游客可能受到的辐射危害。使用高分辨率伽马射线光谱仪和便携式辐射调查仪确定伽马活性和表面剂量。 226 Ra， 228 Ra和 40 K在该区域的平均活动浓度为99.13 Bq / kg，139.98 Bq / kg和598.24 Bq剂量分别为/ kg，而在地面上的平均剂量为0.215μSv/ hr，在距离地面一米处的平均剂量为0.193μSv/ hr。放射性高于世界平均水平，剂量在该范围内，而辐射危害指数在四个地点略高于统一。

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