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首页> 外文期刊>Aerosol and Air Quality Research >Particulate Air Pollution at Schools: Indoor-Outdoor Relationship and Determinants of Indoor Concentrations
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Particulate Air Pollution at Schools: Indoor-Outdoor Relationship and Determinants of Indoor Concentrations

机译：学校空气中的颗粒物污染：室内-室外关系和室内浓度的决定因素

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This study aimed to assess the relationship between indoor and outdoor particulate air pollution at primary schools, and identify the determinants of indoor pollution concentrations. The study was conducted in six classrooms within six primary schools in Sari, Northern Iran. Indoor concentrations of particulate matter (PM) with an aerodynamic diameter of less than 10 μm (PM10), 2.5 μm (PM2.5), and 1 μm (PM1.0) were assessed in classrooms, and outdoor concentrations of PM2.5 on the school playgrounds were monitored simultaneously by using two real-time and portable dust monitors during autumn, winter, and spring, yielding 26 sampling days for each school in total. The highest outdoor and indoor PM2.5 concentrations were found in winter and spring, respectively. The mean indoor PM2.5 concentration (46.9 ± 32.9 μg m–3) was higher than that measured outdoors (36.8 ± 33.2 μg m–3). Indoor PM2.5 and PM1.0 were moderately correlated with outdoor PM2.5 concentrations, which was the main determinant for all indoor particulate concentrations, however, a distinct pattern was observed for PM10 and PM2.5 compared to PM1.0. While meteorological variables (i.e., ambient temperature, relative humidity) could predict indoor PM10 and PM2.5 concentrations, the total area of the windows and the number of students in a classroom were predictors for PM1.0 levels. The findings of this study could inform policymakers in implementing evidence-based targeted interventions aimed at reducing air pollution in school settings.
机译：这项研究旨在评估小学室内和室外颗粒物空气污染之间的关系，并确定室内污染浓度的决定因素。这项研究是在伊朗北部Sari六所小学的六个教室中进行的。在教室中评估了空气动力学直径小于10μm（PM10），2.5μm（PM2.5）和1μm（PM1.0）的室内颗粒物（PM）浓度，并在室外评估了PM2.5的室外浓度。在秋季，冬季和春季，使用两个实时便携式粉尘监测器对学校操场进行了同时监控，每个学校总共采样了26天。分别在冬季和春季发现室外和室内PM2.5的最高浓度。室内PM2.5的平均浓度（46.9±32.9μgm–3）高于室外测量的（36.8±33.2μgm–3）。室内PM2.5和PM1.0与室外PM2.5浓度适度相关，这是所有室内颗粒物浓度的主要决定因素，但是，与PM1.0相比，观察到PM10和PM2.5的模式明显不同。虽然气象变量（即环境温度，相对湿度）可以预测室内PM10和PM2.5的浓度，但窗户的总面积和教室中的学生人数是PM1.0水平的预测指标。这项研究的结果可以为政策制定者提供信息，以实施旨在减少学校环境中空气污染的循证有针对性的干预措施。

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