摘要
对北京市经室内环境治理后的225家家庭住宅683个点位室内环境空气中污染物浓度进行检测和健康风险分析。数据统计结果显示:683个点位室内环境空气中污染物甲醛、苯、甲苯、二甲苯和TVOC检出率分别为100%、88.0%、94.3%、91.4%和66.1%;超标率分别为:6.59%、0.15%、0.44%、0.59%和3.38%。环境健康风险分析结果:非致癌风险HQ≤1苯、甲苯和二甲苯占比分别为100%、100%和99.6%;HQ>1二甲苯占比0.44%;致癌风险CR<1.0×10^(-6)占比:甲醛0%、苯12.0%;1.0×10^(-6)≤CR≤1.0×10^(-4)占比:甲醛57.1%、苯88.0%;CR>1.0×10^(-4)占比:甲醛42.9%、苯0%;对于非致癌风险危害因素二甲苯少量点位HQ>1,宜引起关注;致癌风险危害因素,甲醛依旧为关注重点,苯宜引起关注。
The indoor air quality of 683 sites in 225 residential homes in Beijing after indoor environmental treatment was tested and analyzed for health risks.Data statistics results indicated that the detection rates of formaldehyde,benzene,toluene,xylene,and TVOC in the indoor air of the sites were 100%,88.0%,94.3%,91.4%,and 66.1%,respectively.The rates of exceeding the standard were 6.59%,0.15%,0.44%,0.59%and 3.38%respectively.Non-carcinogenic risk HQ≤1 benzene,toluene and xylene accounted for 100%,100% and 99.6%respectively.HQ>1 xylene accounted for 0.44%.The proportion of carcinogenic risk CR<1.0×10^(-6) was formaldehyde 0%,benzene 12.0%.The proportion of 1.0×10^(-6)≤CR≤1.0×10^(-4) proportion was formaldehyde 57.1%,benzene 88.0%.The proportion of CR>1.0×10^(-4) was formaldehyde 42.9%,benzene 0%.For non-carcinogenic risk hazards,a small number of sites with HQ>1 for xylene should be of concern.As for the risk factors of carcinogenesis,formaldehyde was still the focus of attention,and benzene should also be paid attention to.
作者
龚强
路少中
李国秋
刘丽
苗培贞
李连江
刘晓燕
王茂华
GONG Qiang;LU Shao-zhong;LI Guo-qiu;LIU Li;MIAO Pei-zhen;LI Lian-jiang;LIU Xiao-yan;WANG Mao-hua(National Indoor and Vehicles Environment and Environmental Product Quality Inspection and Testing Center,Beijing 101102,China)
出处
《环境科学导刊》
2025年第5期92-96,共5页
Environmental Science Survey
基金
国家市场监督管理总局科技计划项目(2022MK216)。
关键词
室内空气质量
健康风险
甲醛
苯系物
TVOC
indoor air quality
health risk assessment
formaldehyde
benzene series compounds
TVOC
