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居室内氡的来源及防治 总被引:1,自引:0,他引:1
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。 相似文献
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文章阐述了人类赖以生存的环境中氡的来源、性质,进入人体的途径及致病机制和主要的危害,提出了为减少氡所带来的危害需采取的补救措施和降低室内氡的方法。 相似文献
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建筑室内氡的危害及控制措施 总被引:1,自引:0,他引:1
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。 相似文献
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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。 相似文献
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杨志宽 《建筑热能通风空调》1994,13(2):33-35
当采用地道风向室内送风时,会引起室内氡浓度的增加,造成室内氡的污染给人体健康带来危害.怎样控制氡源减少,防止氡的污染,提出了在通风技术方面解决的方法. 相似文献
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室内氡的危害及控制措施 总被引:10,自引:0,他引:10
介绍了氡的性质以及室内氡的主要来源,特别强调了氡对人体的危害,进而介绍了国内室内氡浓度控制的规范与标准,并根据国家标准和它的四大来源,提出了相应的解决办法和防治措施,如不要将居民住宅建造在地质断裂带或工业废渣堆场上,选择符合国家标准的建筑材料来装修等,以保证人的身体健康。 相似文献
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室内空气中氡的危害和控制 总被引:5,自引:0,他引:5
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。 相似文献
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In one of the 50 houses in which, during a national radon survey of 1000 homes in Slovenia, indoor radon concentrations exceeded 1000 Bq m−3, radon was further investigated. Except in the attic, elevated radon concentrations were found everywhere in the home, ranging from 0.5 to 12 kBq m−3. Applying ICRP 65 methodology, an annual effective dose in the range from 9 to 35 mSv was estimated for an inhabitant for different exposure scenarios. The radon problem was successfully mitigated and radon concentration reduced below 200 Bq m−3. 相似文献
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The general population is exposed to asbestos fibers stemming from a massive number of consumer products and from environmental pollution. Asbestos bodies are present in the lungs of many urban dwellers who do not work with the mineral. Heavy occupational exposure to asbestos is known to cause asbestosis, pleural calcification, pleural plaques, lung cancer, and pleural and peritoneal mesotheliomas. The ingestion of asbestos fibers may increase the risk of gastrointestinal tract cancer. At the present time, little is known about the hazards of chronic low‐level exposure to asbestos. However, the use of asbestos fibers should be curtailed whenever possible, more pathogenicity data should be collected and evaluated, and the health risk to the general public should be reassessed and updated with progressing research. 相似文献
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由于室内氡浓度的变化幅度大和测量的周期长等特点,在工程检测时,测量的精确度方面存在一定难度.通过对α径迹蚀刻法与连续氡监测仪法的跟踪比较,寻求出工程检测中室内氡浓度测量的最佳方法. 相似文献
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结合工程实践,介绍了土壤减压法氡气治理施工技术的具体应用情况,并从技术特点、工艺原理、操作要点等方面进行了阐述,提出了有针对性的质量控制措施,以确保氡气的治理质量。 相似文献
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Radon‐222 gas arises from the radioactive decay of radium‐226 and has a half‐life of 3.8 days. This gas percolates up through soil into buildings, and if it is not evacuated, there can be much higher exposure levels indoors than outdoors, which is where human exposure occurs. Radon exposure is classified as a human carcinogen, and new Danish homes must be constructed to ensure indoor radon levels below 100 Bq/m3. Our purpose was to assess how well 200 newly constructed single detached homes perform according to building regulations pertaining to radon and identify the association between indoor radon in these homes and municipality, home age, floor area, floor level, basement, and outer wall and roof construction. Median (5–95 percentile) indoor radon levels were 36.8 (9.0–118) Bq/m3, but indoor radon exceeded 100 Bq/m3 in 14 of these new homes. The investigated variables explained nine percent of the variation in indoor radon levels, and although associations were positive, none of these were statistically significant. In this study, radon levels were generally low, but we found that 14 (7%) of the 200 new homes had indoor radon levels over 100 Bq/m3. More work is needed to determine the determinants of indoor radon. 相似文献
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综述了建筑物室内降氡的必要性;氡进入室内的主要途径;建造低层建筑物的防氡降氡原则和房址评价方法。详细介绍了美国低层住宅建筑设计与施工中的降氡方法或导则,期望有助于推动适合我国国情的建筑物降氡方法的研究。 相似文献
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广州市室内氡浓度调查报告 总被引:2,自引:0,他引:2
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。 相似文献
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通过对河北省遵化市60个城镇居室内氡浓度测量表明:居室内氡浓度变化范围在15.5Bq/m3~180Bq/m3,平均52±25Bq/m3,比全国平均氡浓度高。居民所受氡照射剂量1.31mSv/a. 相似文献