运用热脱附/GC/MS分析研究室内空气中TVOC浓度及种类分布

利用热脱附/GC/MS联用技术定性、定量(半定量)分析了多组有代表性的室内空气样品。结果表明,室内空气挥发性有机气体的主要成分是苯系物、烃类、醛酮类、酯类等;装修后3个月内的家居室内空气中的苯25%超标,甲苯58%超标,二甲苯79%超标,TVOC 100%超标;一年后,仅TVOC还有11%的超标。办公室情况类似。

Reseach on total volatility organic compounds(TVOC) in indoor air using thermal desorption/GC/MS technique

In order to reseach the pollution of Total volatility organic compounds(TVOC) in indoor air,the paper analysis many groups of sample by using the thermal desorption/GC/MS technique through quality,quantity(semi quantity) dermination.The result showed that the main kinds of identified VOC_S compounds in indoor air are BTEX_S,hydrocarbons/aldehydes/-esters,ects.25% of benzene,58%of toluene,79% of xylene and 100% of TVOC's concentration exceed the nation's standards of indoor air in the houses after decorated 3 months.But,in the houses decorated one year only 11% of TVOC's exceed the standards.The results of offices are similarly to the houses.