摘要
采用Tenax/SPME富集结合GC/MS分析,对21所初装修和13所精装修新建建筑室内空气中VOCs进行测定,分别检出74种和58种污染物.对比了不同类型建筑室内VOCs组成的特征,指出了胺类物质主要来源于初装修使用的各类建筑材料中的化学填加剂;而芳香族化合物则和装修过程中使用的涂料以及胶粘剂等化工产品有关.同时对检出频度和浓度较高的组分和VOCs总量分别进行了定量,其中初装修一组和精装修一组甲苯和二甲苯浓度均值分别为115.7μg/m3和122.9μg/m3、338.2μg/m3和289.4μg/m3;苯和乙苯在两种类型的房屋中浓度变化不大,初装修一组为16.μg/m3和60.4μg/m3,精装修一组为19.3μg/m3和73.5μg/m3;а-蒎烯在初装修一组检出频度(P＜50%)和浓度水平(13.5μg/m3)均较低,在精装修一组中检出频度(P＞85%)和浓度水平(61.5μg/m3)均有大幅增高;初装修一组VOCs的平均浓度为435.7μg/m3,而精装修一组平均浓度为815.9μg/m3.结果表明,精装修VOCs浓度一般比初装修VOCs浓度高2～5倍左右.
A research of volatile organic compounds in new building was conducted with Tenax/SPME coupling GC/MS, 74 pollutants in 21 primary decorated house and 58 pollutants in 13 fine decorated house were qualitative determined. We compared the character of volatile organic compounds in 2 kinds of new building and pointed that the amines are derived from building materials used in primary decorated stage, and aromatic hydrocarbon are derived from coating and adhesives used in fine decorated stage. The concentration of benzene, toluene, ethyl-benzene, xylene, α-pinene and total VOCs were measured by us, the value in primary decorated house was 16.8μg/m^3 , 115.7μg/m^3 , 60.4μg/m^3 , 122.9μg/m^3 , 13.5μg/m^3 , 435.7μg/m^3 respectively in turn, the value in fine decorated house was 19.3μg/m^3 , 338.2μg/m^3 , 73.5μg/m^3 , 289.4μg/m^3 , 61.5μg/m^3 , 815.9μg/m^3 accordingly. The result shows that the concentration of the volatile organic compounds in fine decorated house is 2 ～ 5 times than it in primary decorated house.
出处
《中国环境监测》
CAS
CSCD
北大核心
2005年第5期37-42,共6页
Environmental Monitoring in China
