气相色谱法同时测定溶剂型胶黏剂中的9种有害物质

建立了利用毛细管柱气相色谱同时测定溶剂型胶黏剂中苯、 甲苯、 对（间）二甲苯、 邻二甲苯、 二氯甲烷、1，2-二氯乙烷、1，1，2-三氯乙烷、三氯乙烯、甲苯二异氰酸酯（TDI）的方法，并对样品中有害物质的分离提取和色谱条件进行了研究.实验结果表明，方法化合物浓度在10~300 μg/mL时，线性相关系数不低于0.999 1，样品加标回收率在91.2%~104.1%之间，相对标准偏差均小于5%，检出限为0.1~3.0 μg/mL.方法不仅回收率高、重现性好，而且简便、快速.

Simultaneous Determination of Nine Kinds of Harmful Substance in Solvent-Based Adhesives by Capillary Gas Chromatography

A method for the determination of 9 kinds of harmful substance(e.g.,benzene,toluene,xylene,m or p-xylene,methylene chloride,1,2-ethylene dichloride,1,1,2-trichloroethane,trichloroethylene,and TDI) in solvent-based adhesives by capillary gas chromatography was established.The extraction of harmful substances in the sample and the chromatographic conditions were studied.Under optimum conditions,the limit of detection of 9 harmful substances was between 0.1 μg/mL and 3.0 μg/mL with a linear range of 10～300 μg/mL(R≥0.9991).The relative standard deviation was less than 5%,the recovery rate was between 91.2% and 104.1%.Results showed that the method is convenient,rapid,and with high recovery and high reproducibility.