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本文对城市新建4种类型住宅室内外甲醛和氡浓度基值进行了调查研究,其室内结果为28.95μg/m~3、16.98Bqs/m~3。浓度均值表明:室内>室外、冬季>夏季、竣工后15个月明显低于3个月,而且氡浓度1层>3层,均有极显著性差异(P<0.01)。并对氡所致居民等效平衡浓度、肺部年吸收量、年有效剂量当量进行了估算。在相同的氡浓度时,10岁儿童肺部年吸收剂量比男、女性成人约高0.5倍。提示:人住进后,由于生活的人为污染,其浓度将增加,对人的危害将更严重,应加强通风。
In this paper, the indoor and outdoor concentrations of formaldehyde and radon in four new types of residential buildings in the city were investigated. The indoor results were 28.95 μg / m 3 and 16.98 Bqs / m 3. The mean concentration showed that: indoor> outdoor, winter> summer, 15 months after completion was significantly lower than 3 months, and the radon concentration of 1> 3 layers, there was a significant difference (P <0.01). The equivalent equilibrium concentrations of inhabitants, the annual absorption of lungs and the annual effective dose equivalent of radon were estimated. At the same radon concentration, the 10-year-old child absorbs about 50 times more lungs per year than men and women. Tip: When people live in, due to human pollution in life, the concentration will increase, the harm to people will be more serious, and ventilation should be strengthened.