新装修室内环境空气中氨的污染

目的了解成都市新装修室内环境空气中氨污染的状况并探讨防治措施。方法对成都市50多处企事业单位与住宅小区的办公室、居室、公共场所室内空气中的氨进行了调查采样,选取其中具有代表性的12个采样点的监测结果进行分析。将装修费用和复杂程度相近的采样点按装修后不同时间(装修后0.5、1、2、3、4、5个月)分成6组,每组3～5个采样点,分别测定空气中氨的浓度。结果有代表性的12个采样点的空气中氨的平均浓度为0.307mg/m3,最高浓度为0.598mg/m3,接近国家标准的3倍,氨浓度的超标率为58.33%。装修程度相似的室内环境装修后不同时间空气中氨的平均浓度随时间的推移呈下降趋势,一般到装修后4个月时就可以达到标准值(0.20mg/m3)。结论新装修室内环境空气中存在一定程度的氨污染,房屋装修后保持有效通风5个月再入住为宜。

Control of Ammonia Pollution in Indoor Air

Objective To understand the ammonia pollution level in indoor air in Chengdu city,China.Methods 50 newly decorated houses included resident houses,offices and public places were selected in Chengdu city.The national standard method of China-Berthelot spectrophotometry was used to determine the concentration of ammonia in indoor air.Results The result showed that the average concentration of ammonia was 0.307 mg/m3,the rate of exceed standard limit was 58.33%,the highest concentration was 0.598 mg/m3,which was almost three times of the national standard limit.At 4 months after decoration,the concentration of ammonia decreased near to the national standard limit(0.20 mg/m3).Conclusion As the time goes on,the concentration of ammonia in indoor air shows a downtrend,and in general,it will reach to the safe level in 4 months after decoration,so it is suggested to move in the newly decorated houses after five months since the decoration finished will be better for human health.