建筑室内氡的危害及控制措施

主要论述室内氡的危害、特性和其主要来源，介绍国家对室内氡浓度的控制标准。并根据氡的来源和国家标准，探讨控制建筑室内氡污染的基本措施。     

居室内氡的来源及防治

介绍了氡的危害、室内氡的来源以及降氡防护措施，通过了解氡的来源及特征，以使人们准确判断室内氡浓度高的原因，以便针对性的采取防护措施，保护人类自身的健康。     

室内氡污染的危害及防治

简要介绍了氡的产生和氡污染的来源以及室内氡浓度的影响因素,结合氡的物理化学性质分析了室内氡污染对人体健康的危害,并针对室内氡污染的来源具体阐述了室内氡污染的控制措施和治理方法,以期创造健康的室内环境。     

室内空气中氡的危害和控制

针对我国室内空气中氡的实际情况，从氡的理性特征、来源水平、危害几方面进行了论述，介绍了世界各国对室内氡的控制标准，提出了控制室内空气中氡的有效方法。     

室内氡的来源及纵深防御

室内氡对于人体健康的危害日益引起关注。从室内氡的主要来源入手,针对室内氡的各个来源提出了纵深防御的方法,从而可以更有效地做好防氡降氡工作。     

室内氡浓度检测及评价方法的讨论

建筑事业的发展,空气质量的下降,使得室内氡浓度的升高提高了氡在我国公众天然辐射照射中的份额。本文介绍了氡的性质和主要来源,总结了主要的氡浓度测量方法以及目前对氡浓度的评价方法和现状。     

室内氡辐射的检测与防护

简要介绍了室内氡的危害,氡的来源及检测方法,并在此基础上针对不同的氡源提出了阻断污染源的方法     

室内空气中氡的检测与控制

氡是一种危害人体健康的放射性气体,对室内氡进行检测和控制尤为重要。从空气中氡检测方法、室内氡来源、室内氡浓度超标治理方面进行阐述,以期为室内氡控制工作提供参考。     

夏冬两季室内通风降氡能耗分析

通过对室内氡的来源及氡浓度平衡的分析,建立了室内氡浓度的估算模型。在此基础上,建立了通风降氡能耗与室内氡浓度之间的计算模型,对空调房间内冬夏两季通风降氡能耗和通风换气率进行模拟。通过通风换气率整合两个模型,模拟得出室内通风降氡能耗与室内氡浓度二者之间的关系。以湖南省衡阳市住房进行模拟分析,分析结果表明,室内通风降氡能耗随着室内氡浓度降呈指数类增长,当室内氡浓度值较低时,空调通风降氡能耗要高于高浓度时降低相同氡浓度时所需能耗。     

空调室内氡及粒子污染的传播及其数值模拟

室内氡(含氡子体)污染的传播与粒子(悬浮颗粒)污染在室内的传播过程相关,通风空调气流对氡及粒子污染的传播影响很大。本文详细阐述了室内氡和粒子的来源和特点、氡及其子体在空气中的传播机理以及除去方法,分析了通风空调系统对室内氡及子体传输的影响、以及氡在空气中迁移的动力学模型,分析比较了通风室内氡及粒子污染物迁移沉降过程的数值模拟方法,提出了空调气流环境下氡及粒子污染传播及其数值模拟中的关键问题。     

氡与室内空气环境

氡是一种放射性气体，在室内空气中广泛存在，并对人体造成极大伤害，因此倍受人们关注。本文主要介绍室内空气中氡的特性，来源，健康影响和防治措施。     

Population dose in the vicinity of old Spanish uranium mines

Regional surveys were conducted to determine exposure to natural sources of radiation for people in the vicinity of old Spanish uranium mines. The surveys evaluated indoor radon concentrations and outdoor and indoor external gamma dose rates. Indoor radon concentrations were measured in 222 dwellings by means of nuclear track-etched detectors. The terrestrial gamma ray dose rate was measured outdoors and indoors at a total of 256 points and 115 points, respectively. Estimates mean annual effective doses for the six areas studied ranged from 3.2 to 5.1 mSv per year, which is between 1.2 and 2 times higher than the average national value.     

广州市室内氡浓度调查报告

我公司于2008～2009年承担了全国室内氡调查项目中广州地区的调查工作。本次调查中,按全国室内氡浓度调查方案的要求,按行政区、人口分布、建筑物和种类等分布了采样点,共布了146个采样盒,回收了135个。结果表明,广州市室内氡平均浓度为32.70Bq/m3,最大值156Bq/m3,最小值4Bq/m3。这次全国10个城市室内氡浓度调查结果的均值为34.9Bq/m3。在广州室内氡调查结果比较低的主要原因是人们长期开窗通风的生活习惯。与工程验收检测的氡浓度相差甚远,主要的原因是检测时的状态不同。     

室内装修空气污染现状与防治措施

对室内装修中甲醛、苯、氨、TVOCs、氡五种常见的污染物进行了介绍,分别研究了各种污染物的来源及危害,提出了树立绿色装修理念、保持通风、控制新家具数量、绿色植物净化处理等防治措施,以期从源头上削减和控制室内空气污染。     

Indoor radon levels in selected hot spring hotels in Guangdong, China

Guangdong is one of the provinces that have most hot springs in China, and many hotels have been set up near hot springs, with spring water introduced into the bath inside each hotel room for hot spring bathing to attract tourists. In the present study, we measured radon in indoor and outdoor air, as well as in hot spring waters, in four hot spring hotels in Guangdong by using NR-667A (III) continuous radon detector. Radon concentrations ranged 53.4-292.5 Bq L(-1) in the hot spring water and 17.2-190.9 Bq m(-3) in outdoor air. Soil gas intrusion, indoor hot spring water use and inefficient ventilation all contributed to the elevated indoor radon levels in the hotel rooms. From the variation of radon levels in closed unoccupied hotel rooms, soil gas intrusion was found to be a very important source of indoor radon in hotel rooms with floors in contact with soils. When there was spring water bathing in the bathes, average radon levels were 10.9-813% higher in the hotel rooms and 13.8-489% higher in bathes compared to their corresponding average levels when there was no spring water use. Spring water use in the hotel rooms had radon transfer coefficients from 1.6x10(-4) to 5.0x10(-3). Radon in some hotel rooms maintained in concentrations much higher than guideline levels might thus have potential health risks to the hotel workers, and technical and management measures should be taken to lower their exposure of radon through inhalation.     

Large-scale radon hazard evaluation in the Oslofjord region of Norway utilizing indoor radon concentrations, airborne gamma ray spectrometry and geological mapping

We test whether airborne gamma ray spectrometer measurements can be used to estimate levels of radon hazard in the Oslofjord region of Norway. We compile 43,000 line kilometres of gamma ray spectrometer data from 8 airborne surveys covering 10,000 km² and compare them with 6326 indoor radon measurements. We find a clear spatial correlation between areas with elevated concentrations of uranium daughters in the near surface of the ground and regions with high incidence of elevated radon concentrations in dwellings. This correlation permits cautious use of the airborne data in radon hazard evaluation where direct measurements of indoor radon concentrations are few or absent. In radon hazard evaluation there is a natural synergy between the mapping of radon in indoor air, bedrock and drift geology mapping and airborne gamma ray surveying. We produce radon hazard forecast maps for the Oslofjord region based on a spatial union of hazard indicators from all four of these data sources. Indication of elevated radon hazard in any one of the data sets leads to the classification of a region as having an elevated radon hazard potential. This approach is inclusive in nature and we find that the majority of actual radon hazards lie in the assumed elevated risk regions.     

住宅室内环境污染及其防治措施

通过分析室内环境污染物的来源,论述室内环境污染对人体健康的危害性,并从建筑材料、国家法规等方面提出防治室内环境污染的措施。