新装修居室空气中甲醛的污染状况

目的　调查新装修居室空气中甲醛的污染情况。方法　使用乙酰丙酮分光光度法 ,测定 5户居室装修后不同时间空气中的甲醛浓度 ,同时设对照房。结果　 5户居室装修后 0 5、 1、 2、 3个月室内空气中甲醛浓度均超过国家卫生标准 0 0 8mg/m3(与对照比较差异有统计学意义 ,P <0 0 5 ) ,各组均值相互间比较差异均有统计学意义 (P <0 0 5 ) ;居室装修后第 3个月客厅空气中甲醛浓度平均为 0 0 85mg/m3,卧室空气中甲醛浓度平均为 0 12 4mg/m3,均超过了国家卫生标准 (与对照比较差异均有统计学意义 ,P <0 0 1) ,卧室空气中甲醛浓度比客厅高 (两者比较差异有统计学意义 ,P <0 0 5 )。结论　新装修居室空气中甲醛污染较严重 ,甲醛的浓度随装修后时间的延长而逐渐降低 ;室内空气中不同居室的甲醛污染情况不同 ,卧室空气中甲醛污染较客厅严重

The Situation of the Pollution of Formaldehyde in Indoor Air of Newly Decorated Living Rooms

Objective To investigate the situation of the pollution of formaldehyde in indoor air of newly decorated living rooms.Methods The formaldehyde concentrations in indoor air of 5 newly decorated rooms were determined with acetyl acetone spectrophotometry during the different periods after decoration.The control living rooms were seleted at the same time.Results The formaldehyde concentrations in indoor air exceeded the national sanitary standard(0 8 mg/m 3) after the 5 living rooms had been decorated for half of month,one month,two months and three months.There were significant differences between the means of every group of the concentrations of each other( P <0 05).The average concentration of formaldehyde in indoor air in parlors was 0 085 mg/m 3 after the 5 houses had been decorated for 3 months.And the average concentration in bedrooms was 0 124 mg/m 3.Both of the concentrations exceeded the national sanitary standard(0 08 mg/m 3).There was significant difference between the two concentrations ( P <0 05).The concentration in bedrooms was higher than that in parlors.And the two concentrations were also significantly different from that of no decoration ( P <0 01).Conclusions The indoor air pollution by formaldehyde was serious in newly decorated living rooms.The formaldehyde concentrations in indoor air decreased gradually with the prolongation of periods after decoration.The situation of the pollution in different living rooms wasn't same.The pollution in bedrooms was more serious than that in parlors.