摘要
目的了解南充市不同功能分区住宅室内空气中甲醛污染现状,探讨温度、湿度、通风、装修等因素对室内甲醛浓度的影响。方法 2012年1月—2014年6月在南充市高坪区几个新建住宅小区,随机抽取80户装修后1年内的住户进行室内空气中甲醛浓度的监测,记录温度、湿度、通风等气象参数。结果住宅室内空气中甲醛的浓度装修后明显升高,随着时间的推移逐渐下降,3个月内空气中甲醛的超标率达65.4%,6个月后超标率明显降低到25.0%。不同功能类型房间空气中甲醛浓度不同,甲醛浓度的超标率高低依次是书房、主卧室、次卧室、客厅和厨房,其超标率依次为42.8%、35.4%、27.7%、24.6%、15.4%,且随着温度的升高和湿度的增加,甲醛的超标率明显增加,温度超过30℃时,甲醛的超标率达44.6%,相对湿度大于75%,甲醛的超标率达36.9%,通风时间与甲醛浓度呈负相关。结论装修后不同功能分区住宅室内空气中甲醛超标较为普遍,温度和湿度较高时会促进甲醛的释放,自然通风有利于降低甲醛的浓度,随着装修后时间的延长,室内空气中甲醛的浓度逐渐降低。
[Objective]To understand the status of formaldehyde pollution in indoor air of different functional partition houses in Nanchong,explore the influence of temperature,humidity,ventilation,decoration and other factors on indoor formaldehyde concentration.[Methods]A total of 80 houses which had been decorated less than 1 year in several new residential area in Gaoping district of Nanchong were selected randomly from January 2012 to June 2014,the formaldehyde concentration in indoor air were monitored,and the temperature,humidity,ventilation and other meteorological parameters were recorded.[Results] The formaldehyde concentrations in indoor air increased significantly after the decoration,then declined regularly over time.Within three months,the exceeded rate of formaldehyde in indoor air was 65.4%,after six months the rate declined to 25.0%.The formaldehyde concentrations in different functional partition rooms were different.The exceeded rates of formaldehyde concentration from high to low were the study（42.8%）,master bedrooms（35.4%）,second bedroom（27.7%）,living room（24.6%）and kitchen（15.4%）.With the increase of temperature and humidity,the exceeded rates of formaldehyde increased.The exceeded rate of formaldehyde was 44.6% when temperature exceeded 30 ℃,and exceeded rate of formaldehyde was 36.9% when the relative humidity was more than 75%.The ventilation time negatively correlated with the formaldehyde concentration.[Conclusion]The condition of formaldehyde exceeded the standard in indoor air of different functional partition houses after decoration is relatively common,higher temperature and humidity will promote the release of formaldehyde,and natural ventilation is helpful to reduce the concentration of formaldehyde.With the extension of time after decoration,the concentration of formaldehyde in indoor air is gradually decreased.
出处
《职业与健康》
CAS
2016年第7期957-959,962,共4页
Occupation and Health
基金
四川省教育厅项目(12ZB224)
关键词
甲醛
室内
空气污染
Formaldehyde
Indoor
Air pollution
