北京市西城区冬季室内居民一氧化碳暴露水平

Investigation of canrbon monoxide of indoor air from residential areas at Xicheng District,Beijing

2010年12月对北京市西城区5个社区100户家庭居民室内一氧化碳的浓度进行了调查.调查依据GB/T18204.23-2000公共场所一氧化碳测定方法,采用不分光红外线气体分析法现场测量居民室内一氧化碳含量.5个社区居民室内一氧化碳浓度(平均值±标准差)分别为(20.5±23.0)、(16.0±11.5)、(14.0±11.6)、(8.9±11.0)和(3.0±1.1)mg.m-3,是室外一氧化碳浓度的20、18、13、6和3倍.采用统计学方法对结果的分析表明:家中的通风设备会显著影响室内一氧化碳浓度.

Ambient levels of carbon monoxide were studied at five residential areas in Xicheng District, Beijing, during the period of December 2010. According to National Standard Method （GB/T18204.23 -2000） ,carbon monoxide was measured by infrared spectrum method. The average levels for five residential areas were （20.5±23.0）、（16.0±11.5）、（14.0±11.6）、（8.9±11.0）和（3.0±1.1）mg·m^-3, respectively. The indoor/outdoor ratios were 20,18,13,6 and 3, respectively. The statistics results implied that ventilation efficiency in residential room could affect the concentrations of carbon monoxide.