第11卷第3期 2016年9月
doi:10.3969/j.issn.1007-1903.2016.03.013
域市地翼 URBANGEOLOG)
土壤中氢浓度检测及其影响因素
邹新悦，陈刚，黄骁，孙书民
（北京市地质工程勘察院，北京100048）
Vo1.11 No.3 September，2016
摘要：综合相关文缺研究，通过工程实例介绍土壤中氧气浓度的检测方法，对检测结果进行统计学分析，根据分析结果探讨不同土壤中氧浓度差异及其影响国素。结果显示：土壤孔隙度是影响土壤中氧气浓度的关键因素。不同类型的表层土壤，孔隙度不同，所含氧气浓度电不同。当表层土壤为房渣土、填土时，土质实，孔隙率低，氧浓度含量较低；表层土壤为粉土、粉质粘土时，土质较均匀，土层较疏松，孔陈度略大，土壤氧浓度大于前者；表层土壤为粉砂、期砂时，土层更为疏松，土境中孔陈度再次增大，氧在土境中有大量的存储空间，所含的氧浓度最大。园此，土壤的
孔隙度大小影响氧从地下向地表渗遗析出的难易程度，孔隙度越大氧越容为渗透其中，浓度就越高，关键词：土壤；氧浓度；土壤孔隙度
中图分类号：X142
文献标识码：A文章编号：1007-1903（2016）03-0070-04
StudyonRadonConcentrationMeasurementinSoilandItsInfluenceFactors
ZOUXinyue,CHENGang,HANGXiao,SUNShumin(Beijing Institufe of Geological & Prospecring Engineering, Beij/ing 100048)
Abstract:To introduce the measurement method of radon concentration in soil by literature summary and a project example, this paper analyzes the influence factors of radon concentration in different kinds of soil by statistical analysis on the measurement data. The results show: the soil porosity is a key factor affecting radon concentration; for different types of surface soil, different porosity, the radon concentration is different. When the surface soil is slag soil and filling soil, the radon concentration is low; when the surface soil is silt and silty clay the soil is more uniform, soil porosity, the radon concentration is higher, when the surface soil is silty sand and fine sand, the soil porosity is even more larger, and there is a large amount of storage space, the radon concentration is the largest. Therefore, the difficulty level of radon infiltration from underground to surface is related to the porosity
of the soil, the higher the porosity, the more easily infiltrating for the radon. Keywords: Soil; Radon concentration; Soil porosity
0引言
氢是世界卫生组织公布的19种主要致瘤物质之一，其健康危害仅次于香烟引起人类肺癌。联合国原子辐射效应科学委员会估计，来自天然的辐射对
公众的年有效剂量中，氢及其子体的贡献度约高达 54%。而室内有害气体氢的主要来源有三：建筑地基土壤中析出的氢；建筑材料中析出的氢；从户外空气中进人室内的氢。其中建筑地基土壤中析出的氢是最主要来源，所以准确的检测土壤中的氢浓度
作者简介：邹新悦（1986-），男，主要从事土工试验和暨外检测。E-mail；jim4476@126.com