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目的了解中小学校舍改造工程新建教室、宿舍内甲醛污染现状,分析甲醛来源,为控制甲醛污染提供措施。方法 2012年5月抽取沂源县校改完成新迁入的教室6个,宿舍12个和同等数量老教室、宿舍作对比,用大气采样器采样,酚试剂法检测分析,SPSS 10.0进行统计学分析。结果新老教室、宿舍48个采样点中,超标20个,超标率为41.67%。新教室内甲醛浓度为0.103mg/m3,宿舍内浓度为0.086mg/m3,较国家标准0.080mg/m3高;老教室内甲醛浓度为0.065mg/m3,宿舍内浓度为0.064mg/m3,较国家标准浓度低;新老教室甲醛浓度及新老宿舍甲醛浓度均存在显著的统计学差异。结论新教室、宿舍内甲醛污染状况较严重。
Objective To understand the current situation of formaldehyde pollution in new classrooms and dormitories of primary and secondary school rebuilding projects, analyze the sources of formaldehyde and provide measures for the control of formaldehyde pollution. Methods In May 2012, 6 classrooms, 12 dormitories and the same number of old classrooms and dormitories were selected for correction in Yiyuan County. Samples were taken by atmospheric sampler, phenolic reagent method and SPSS 10.0 were used for statistical analysis. Results In the old and new classrooms and dormitories, 48 out of 20 sampling points exceeded the standard of 41.67%. The concentration of formaldehyde in the new classroom was 0.103mg / m3, the concentration in the dormitory was 0.086mg / m3, which was higher than the national standard of 0.080mg / m3. The concentration of formaldehyde in the old classroom was 0.065mg / m3 and the concentration in the dormitory was 0.064mg / m3. The national standard concentration is low; formaldehyde concentration in old and new classrooms and formaldehyde concentrations in old and new dorms have significant statistical differences. Conclusions Formaldehyde pollution in new classrooms and dormitories is more serious.