摘要:
了解银川市中小学体育馆空气卫生质量现况,为更好地改善空气质量提供依据.方法 抽取银川市中小学体育馆12所,对馆内CO2、甲醛、可吸入颗粒物(PM2.5)、温度、相对湿度进行调查,参考《体育馆卫生标准》(GB9668-1996)(以下简称《标准》)中标准值进行判断.结果 银川市中小学体育馆CO2体积百分比浓度在开馆前均小于国家标准值最高限(0.15%),符合《标准》规定;但在运动1h后CO2体积百分比浓度均大于0.15%,16.7%的中学CO2体积百分比浓度高达0.25%,超出《标准》最高值66.7%;24 h CO2体积百分比浓度均值均大于0.15%,不符合《标准》规定.甲醛质量体积浓度开馆后1h均值均大于国家标准值最高限(0.12 mg/m3),不符合《标准》规定;16.7%的小学高达0.21 mg/m3,超出《标准》最高值75%.可吸人颗粒物(PM2.5)在开馆前均小于国家标准值最高限(0.25 mg/m3),符合《标准》规定;但运动1h后普遍升高并超过规定值,16.7%的中学高达0.62 mg/m3,超出《标准》最高值148%;24 h均值也均>0.25 mg/m3,不符合《标准》规定.温度在开馆前和运动1h后均≥16℃的国家最低限,符合《标准》标准;相对湿度开馆前均低于《标准》限值,开馆1h后虽略有提升,但仍不符合《标准》规定.结论 银川市中小学体育馆空气卫生质量不容乐观,应积极采取措施进行改善.
关键词:
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空气 /
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质量指标 /
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卫生保健 /
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环境监测
Abstract:
Objective To investigate air quality of gymnasiums in elementary and secondary schools Yinchuan,and to provide the basis for better air quality improvement.Methods Twelve gymnasiums from elementary and secondary schools in Yinchuan were investigated,including CO2,formaldehyde,PM2.5,temperature and relative humidity according to national standards of Hygienic Standard for Gymnasium(GB 9668-1996).Results The density of CO2 in elementary and secondary schools gymnasiums before open hour was less than the national maximum level(0.15%).However,it showed higher than 0.15% 1h after open.The density of CO2 reached 0.25% in 16.7% secondary schools,66.7% higher of the national standard,while it reached to 0.21 mg/m3 in 16.7% elementary schools,75% higher of the national standard.The mean value of CO2 density 24 hours after open was higher than 0.15%.The density of the inhalable particle (PM2.5) before opening was less than national maximal standards (0.25 mg/m3),however,it increased to 0.62 mg/m3 an hour after opening in 16.7% secondary schools which was 148% higher of the national standard.Mean value of PM2.5 24 hours after opening was higher than 0.25 mg/m3.The temperature before and an hour after open in line with national lowest standard(16 ℃).The relative humidity before and after opening was slightly lower than national standard.Conclusion Air quality of gymnasiums in Yinchuan remains a concern in many elementary and secondary schools which needs further attention.
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