School of Architecture, Harbin Institute of Technology, Harbin 150090, China; Key Laboratory of Cold Region Urban and Rural Human Settlement Environment Science and Technology, Ministry of Industry and Information Technology, Harbin 150090, China.
School of Architecture, Harbin Institute of Technology, Harbin 150090, China; Key Laboratory of Cold Region Urban and Rural Human Settlement Environment Science and Technology, Ministry of Industry and Information Technology, Harbin 150090, China.
Sci Total Environ. 2020 Jun 20;722:137945. doi: 10.1016/j.scitotenv.2020.137945. Epub 2020 Mar 14.
Recent years, people pay great attention to fine particle matter (PM) in indoor environment due to its negative impacts on health. Household cooking and severe air pollutant aggravate indoor PM level, especially during heating season in severe cold region of China. To find the variation of actual household PM influenced by both cooking activities and penetration from outdoor environment, a field measurement of PM concentrations in living room of residential buildings was conducted in Harbin, China. Firstly, six households in urban residence were selected to monitor the indoor PM mass concentration sequentially. Simultaneously, outdoor PM concentrations, temperature and indoor occupants' behavior were collected. Secondly, indoor to outdoor (I/O) ratios of PM in each household during monitoring campaigns were calculated. Influence of cooking activities and outdoor penetration on indoor PM concentrations in living room were also analyzed. Thirdly, some discussions were done for explanation of variation of PM in urban residential buildings. Results showed that the average PM mass concentrations varied from 11.7 to 48.6 μg/m indoor, while average I/O ratio value ranged from 0.33 to 1.23. Cooking in kitchen had significant impact on PM mass concentrations in living room, especially when frying, which could lead to peak value of 456.8 μg/m within 10 min from background level. Penetration led to the indoor PM level approximately 2 h behind with outdoor PM concentrations in general residences.
近年来，由于细颗粒物（PM）对健康的负面影响，人们对室内环境中的细颗粒物高度关注。家庭烹饪和严重的空气污染物加剧了室内 PM 水平，尤其是在中国严寒地区的供暖季节。为了研究实际家庭 PM 受烹饪活动和室外环境渗透的影响，在中国哈尔滨对住宅建筑客厅中的 PM 浓度进行了现场测量。首先，选择了六个城市住宅家庭来连续监测室内 PM 质量浓度。同时，收集了室外 PM 浓度、温度和室内居住者的行为数据。其次，计算了监测期间每个家庭的室内到室外（I/O）的 PM 比值。分析了烹饪活动和室外渗透对客厅室内 PM 浓度的影响。第三，对城市住宅建筑中 PM 变化进行了一些讨论。结果表明，室内 PM 质量浓度平均值在 11.7 到 48.6μg/m 之间，而平均 I/O 比值在 0.33 到 1.23 之间。厨房烹饪对客厅内 PM 质量浓度有显著影响，特别是油炸时，会导致 10 分钟内从背景水平达到 456.8μg/m 的峰值。一般来说，渗透会导致室内 PM 水平滞后室外 PM 浓度约 2 小时。
