北京某小学教室PM10浓度变化特征

Dynamic concentration of PM10 in one primary school classroom in Beijing

目的研究小学教室内可吸入颗粒物(PM10)的污染状况和变化特征,为降低小学教室内PM10浓度提供依据。方法选取北京市某小学的普通教室,利用在线监测数据实时传输系统记录教室内PM10浓度。结果监测当日AQI越高,教室内PM10浓度越高;在重污染天气条件下教学活动导致教室内PM10浓度升高明显。学生在教室上课时间70%是在非采暖期,非采暖期教室内PM10污染更严重。结论建议在连续雾霾天气,采取停工停产等控制措施;应减少教学活动产生的PM10;重视非采暖期的严重污染。

Objective The status and variation characteristics of PM10 pollution were studied in order to provide the basis for reducing the pollution of the PM10.Methods Using the on-line monitoring and real-time transmission monitoring data system,the concentriation datasets of PM10 was recorded and the variation characteristic analysis was also done.Results In the classroom,the higher the AQI,the higher the concentration of PM10 would be;and the PM10 during the non-heating period that acount for 70 percent time of student loating in classroom was higher than heating period.Besides,the concentration of PM10 in the classroom increased obviously by teaching activities under the heavy polluted weather condition.Conclusions To decrease the pollution of PM10,it was suggested by the result that control measures,taking stopping work and production for example,should be applied during continuous haze weather period;Whatsoever,reducing the PM10 produced by teaching activities is necesarry,and more attention should be paid to the serious pollution during the non-heating period.