【摘要】 本文介绍了用放化分离、电沉积制源、半导体α谱仪测量的方法,联合测定广东天然放射性高本底地区和对照地区居民骨骼中²³²Th、²³⁰Th 和²²⁸Th 含量的结果。高本底地区9例居民骨骼中²³²Th、²³⁰Th 和²²⁸Th 的平均含量分别为（13.71±8.33）、（17.29±13.23）和（23.27±11.24）pCi/kg（鲜骨）,对照地区4例居民骨骼中上述三种核素的平均含量分别为（0.92±0.68）、（1.56±0.98）和（1.77±1.14）pCi/kg（鲜骨）。更多还原

【Abstract】 In this paper,the contents of²³²Th,²³⁰Th and²²⁸Th were givenout in 9 cases of bone of inhabitants living in the high background radiationarea and 4 eases of bone of the inhabitants living in the control area inGuandong Province.The determination was carried out by means of radioch-emistry separation,electrodeposition,followed by alpha-spectrometric meas-urement using a surface barrier detector.The mean concentratinos ²³²Th,²³⁰Thand ²²⁸Th in the bone of the inhabitants living in the high background areawere 13.71±8.33,17.29±13.23,23.27±11.24 pCi/kg（wet weight）respec- tively,while that in the control area were 0.92±0.86,1.56±0.98,1.77±1.14pCi/kg（wet weight）respectively.更多还原