Total Volatile Organic Compounds Determination in Indoor Air by Built-in Thermal Desorption/GC

The GC with built-in thermal desorption was applied for determination of total volatile organic compounds in indoor air.The advantage of built-in thermal desorption injection was described.The standard curves of typical organic pollutants were established such as Benzene,Toluene,Butyl acetate,Ethylbenzene,p-Xylene,m-Xylene,o-Xylene,Styrene and Undecane.The correlation coefficients of compounds R2 ranged from 0.999 2 to 1.The repeatability of method was observed and RSD of six parallel tests ranged from 0.8% to 1.4%.