热解析-气相色谱-质谱法测定塑胶跑道中35种挥发性有机化合物(VOCs)释放量的研究

Determination of Release of 35 Volatile Organic Compounds(VOCs)in Plastic Track by Thermal Desorption-Gas Chromatography-Mass Spectrometry

建立了塑胶跑道中35种挥发性有机化合物(VOCs)的热解析-气相色谱-质谱法的检测方法。样品预平衡后,经环境舱释放并采集气体,用热解析-气相色谱-质谱法测定,标准曲线定量。35种挥发性有机化合物(VOCs)在0.01~1.0 mg/m^3浓度范围内线性良好,相关系数>0.99。当采样体积为5 L时,检出限为0.00001~0.0004 mg/m^3。在0.02、0.1和0.6 mg/m^33个浓度下,相对标准偏差(n=6)为1.6%~9.7%。方法可用于塑胶跑道中挥发性有机化合物(VOCs)的定性和定量检测,为研究其对人体可能产生的危害提供重要依据。

A method for the determination of 35 volatile organic compounds(VOCs)in plastic track by thermal desorption-gas chromatography-mass spectrometry was established.After pre-equilibrium,the gas was released and collected in the environment chamber.The gas was determined by thermal desorption-gas chromatography-mass spectrometry,and was quantified by the standard curve.35 Volatile organic compounds(VOCs)showed good linearity in the concentration range of 0.01~1.0 mg/m^3,with correlation coefficient>0.99.When the sampling volume was 5 L,the detection limit was 0.00001~0.0004 mg/m^3.The relative standard deviation(n=6)was 1.6%~9.7%at 0.02,0.1 and 0.6 mg/m^3.The method can be used for the qualitative and quantitative detection of volatile organic compounds(VOCs)in plastic track,and provides an important basis for the study of its possible hazards to human body.