某部新装修居室空气质量调查分析

目的了解新装修居室室内空气质量情况,探讨室内污染物种类及其污染途径。方法检测对象为某区申请空气质量检测的28户新装修2个月后住宅。采用4160型甲醛分析仪测定甲醛浓度,以甲醛浓度高于0.08 mg/m3为超标剂量计算超标率。总挥发性有机化合物(TVOC)的测定采用总挥发性有机化合物PGM-7240/7240K检测仪,以TVOC浓度高于0.5 mg/m3为超标剂量,计算超标率。氡的测定采用1027型测氡仪,以浓度高于100 Bq/m3为超标剂量,计算超标率。结果室内居室甲醛浓度全部超过国家标准,厨房、主卧,主卫,客卧浓度高于卫生间和客厅;主卫、书房、主卧超标率显著高于客厅,具有统计学意义。厨柜内甲醛浓度显著高于室内空气甲醛浓度(P<0.05)。除卫生间外,室内不同居室TVOC浓度全部超过国家标准,厨房、主卧TVOC浓度高于卫生间;书房、客卧TVOC超标率显著高于卫生间超标率。各居室氡浓度均在国家标准范围内。结论新装修居室经过2个月时间后,室内甲醛、TVOC浓度仍较高,多数超过国家标准,氡多数在国家标准范围内。

Investigation of Indoor Air Quality in Newly Decorated House

Objective To understand the effects of house decoration on indoor air quality.Methods Formaldehyde,total volatile organic compounds(TVOC)and Radon were monitored in indoor air of 28 newly decorated residential buildings in our military area.Results The average room concentration of formaldehyde exceeded the national standards.The concentration of formaldehyde in the kitchen,host bedroom,host toilet,and guest-bedroom was significantly higher than those of toilet and living room,and the rate of exceeded standards in host toilet,study room,and host bedroom was significantly higher than that of living room.The average room concentrations of TVOC exceeded the national standards except the toilet.The concentration of TVOC in the kitchen and host bedroom was significantly higher than that of toilet and the exceeded standards rates of study room and guest bedroom were significantly higher than that of the toilet.The average room concentration of Radon was within the permitted range of national standards.Conclusion Formaldehyde and total volatile organic compounds are the major materials of indoor air pollution in newly decorated residential buildings.