2004年大连市部分居室空气中甲醛浓度调查

目的]调查居室空气中甲醛的污染现状并探讨其影响因素。方法]2004年月选择172户装修时间在半年内的居室为研究对象,选择52户毛坯房作对照,用酚试剂分光光度法测定室内空气中甲醛浓度。结果]装修后的居室与毛坯房作比较,经t检验,差异有统计学意义(P<0.05)。简单装修与复杂装修比较,经t检验,差异有统计学意义(P<0.05)。室内空气中甲醛的浓度随着时间的推移有所下降。经6个月,复杂装修平均浓度从0.61 mg/m3降为0.24mg/m3,简单装修平均浓度从0.22 mg/m3降为0.11 mg/m3。结论]大连市装修后室内空气中甲醛污染相当严重,良好的通风可有效地减轻居室内甲醛的污染程度。

Investigation on Formaldehyde Concentration in Decorated Rooms in Dalian

Objective]The aim of this study was to investigate the pollution by formaldehyde in indoor air of decorated rooms.discuss the causes and its risk factor to the health.Methods]172 rooms decorated in half a year and 52 rooms non-decorated were studied.Formaldehyde concentration was determined by phenol reagent spectrophotometry in 2004.Results]In the comparison of the decorated rooms with non-decorated,there was a difference(P<0.05).which verified by t.In the comparison of the simple decorated ones with the complicated decorated ones,there was a difference,which verified by t(P<0.05).The indoor formaldehyde concentration reduced as time goes on.After six months,the average formaldehyde concentration in the complicated decorated room decreased from 0.61 mg/m3 to 0.24 mg/m3,from 0.22 mg/m3 to 0.11 mg/m3 in simple decorated ones.Conclusion]The air in decorated rooms was seriously polluted by formaldehyde in Dalian.Good ventilating can reduce it effectively.