An Evaluation of Natural Radiation Environmental Geology of Chengdu Economic Area, Sichuan Province

• 责任者：Zeng Bing (Key Laboratory of Applied Nuclear Techniques in Geosciences ; Chengdu University of Technology ; Chengdu 610059 ; China) ; Ge Liangquan
• 刊名：Geophysical and Geochemical Exploration
• 出版年：2010
• 卷期：34(1)
• 关键词：城市环境 ; urban environment ; 放射性 ; radioactivity ; 四川 ; Sichuan Province
• 页码：p.79-84
• 图表：2 illus., 1 table, 14 refs.
• 分类号：1800
• issnNo：ISSN1000-8918
• isbnNo：CN11-1906/P

Using geochemical prospecting data obtained in previous geological investigation and soil U, Th and K content data obtained from 1∶250 000 geochemical exploration in Chengdu Economic Area, this paper predicted the natural radioactivity on the ground-air interface. The results show that the specific activity of the radioactive nuclide ⁴⁰K is higher than its average values of China and the world, ²³⁸U is much lower than its average values of China and the world, and ²³²Th is equivalent to its average value of China but much higher than its average value of the world. Except for small areas in Longmenshan folded belt and Emeishan-Washan faulted fold belt, the radiation level of Chengdu Economic Area is within the national limits of radioactive nuclides in building materials. This paper provides support for the reasonable and effective use of land and resources in Chengdu Economic Area and also supplies the necessary reference for speeding up economic integration and sustainable development of cities.