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为了深入了解北京市城区学校教室内二氧化碳的浓度水平及变化规律,随机抽取城区的一所中学和一所小学,对学校教室内的二氧化碳浓度进行实时在线监测。结果表明,所监测教室内二氧化碳浓度水平有超标现象,二氧化碳浓度变化具有一定的规律,中学教室内的二氧化碳浓度水平比小学教室高,冬夏季教室内二氧化碳浓度较春秋季高,上课时间二氧化碳浓度较高,而且每节课上课时间二氧化碳浓度逐渐上升。通过此项研究可以找出超标现象原因,提出卫生监督管理对策和学校自身管理措施,为修订相关法律法规和标准提供依据。今后还有待建立预警机制,对学校教室的空气改善措施进行效果评估,以有效提高学校教室的空气质量,保障学生身体健康。
In order to gain a better understanding of the concentration level and variation of carbon dioxide in school classrooms in urban areas of Beijing, a secondary school and a primary school in the urban area were randomly selected to conduct real-time on-line monitoring of the concentration of carbon dioxide in the school classrooms. The results showed that there was an excessive level of CO 2 concentration in the classroom. The concentration of CO 2 in the middle school classroom was higher than that in the primary classroom. The concentration of CO 2 in the classroom was higher in winter and summer than in the spring and autumn. High, and the concentration of carbon dioxide in each class during the gradual increase in concentration. Through this study, we can find out the reason of exceeding the standard, put forward health supervision and management measures and the school’s own management measures to provide the basis for the revision of relevant laws, regulations and standards. In the future, an early warning mechanism has yet to be set up to assess the effectiveness of air quality improvement measures in school classrooms so as to effectively improve the air quality in classrooms and ensure the health of students.