GC-MS在电子束辐照降解甲苯中的应用

用甲苯作为挥发性有机化合物的代表物质，建立了活性炭吸附-二硫化碳解吸气相色谱-质谱分析方法，对电子束辐照甲苯的静态实验和动态实验进行了定性、定量分析。实验结果表明：电子束辐照能有效地降解甲笨，其降解率随吸收剂量的增加而增大；同时，甲苯降解过程中也会生成部分有毒有害物质。该分析方法的检出限为0．02mg／L，工作曲线的线性范围为10～1000mg／L，相关系数为0．9998，活性炭吸附、解吸甲苯的加标回收率大于90％。

Application of GC-MS in Degradation of Toluene by Electron Beam Irradiation

Using toluene as a representative matter of VOCS,the method of activated carbon adsorption-carbon bisulfide desorption-GC-MS analysis was established.It was used in the qualitative and quantitative analysis of toluene in the static and dynamic experiments on toluene degradation by electron beam irradiation.The experimental results indicate that: Toluene can be effectively degraded by electron beam irradiation and its degradation rate increases with the increment of absorbed dose;At the same time,some poisonous and harmful substances may generate in the process of toluene degradation.The detection limit of the method is 0.02 mg/L.The linear range of its working curve is 10-1 000 mg/L,and the correlation coefficient is 0.999 8.The recovery rate of labeled toluene by activated carbon is above 90%.