青岛市区土壤中氡的测量与分析  

Survey and Analyses of Radon in Soil of Qingdao Area

作　　者：姚德[1] 曲丽梅[1] 夏宁[2] 丛丕福[3] 

机构地区：[1]中国科学院海洋研究所 [2]青岛海洋地质研究所,山东青岛266071 [3]国家海洋环境监测中心,辽宁大连116023

出　　处：《核化学与放射化学》2008年第3期184-188,共5页Journal of Nuclear and Radiochemistry

基　　金：教育部科学技术研究重点项目(205089);国家自然科学基金资助项目(40076015);中国地质环境调查项目(2003-20-04)

摘　　要：用0.2 km×0.2 km的网格布点,采用FD-3017型RaA测氡仪测量了青岛地区岩石、土壤共2401个样点中的氡活度浓度,对本区土壤氡的分布规律进行了分析。结果表明,青岛土壤氡活度浓度点位平均值为4483.50 Bq/m3,属于土壤氡活度浓度正常地区;本区地下土层中土壤氡活度浓度与岩性酸性强弱有一定的关系,一般情况岩性酸性偏强地区的土壤氡活度浓度也偏高;另外在构造的断裂地带有多处氡活度浓度偏高点出现,这进一步证实了土壤氡的析出与地质岩性和构造裂隙之间存在一定关系。Radon and its progeny contribute significantly to total inhalation dose. When inhaled in large quantity it can cause lung disorder. Radon in rocks and soils contributes to the radioactivity concentration of radon in atmosphere. On the basis of the sampling grid of 0.2 km× 0.2 km, we measured radon radioactivity concentrations of 2 401 sampling sites in rocks and soils in Qingdao area using FD-3017 RaA radonmeter. The mean radon radioactivity concentration in Qingdao is 4 483. 50 Bq/m^3. It is normal in radon in Qingdao. It is concluded that there is definite relationship between the radioactivity concentration of underground radon and rocky acidity. The stronger of acidity in rock, the higher of the radon radioactivity concentration in common. Furthermore, several higher radioactivity concentrations of radon appear in the rupture belt of the structure. It is validated that the radon release from the soil is related to the lithology and structural fractures.

关 键 词：氡 FD-3017型RaA测氡仪 岩性 青岛 

分 类 号：X820.3[环境科学与工程—环境工程] X591