静态顶空-气相色谱-质谱联用法同时检测涂层织物中的6种异味物质

采用静态顶空-气相色谱-质谱联用法对涂层织物中丙酮、甲苯、二甲基甲酰胺、丙烯酸甲酯、丙烯酸乙酯、丙烯酸丁酯6种异味物质进行了分析.方法采用DB-5石英弹性毛细管色谱柱分离,质谱检测器检测.色谱进样口温度160℃,分流比8∶1,升温程序为初始柱温40℃,保持1 min,以1℃/min升温至45℃后再以20℃/min升温至85℃,保持2 min;以氦气为载气,流速0.6 mL/min.6种异味物质能够完全分离,线性良好,线性相关系数R2在0.990 2~0.999 0之间,最低检测限在0.008~0.189μg/mL之间,相对标准偏差RSD值小于4.84%.采用该方法对9种涂层织物进行了检测,操作简便、快捷,与嗅辨法相比该方法更加客观,可以应用于纺织品异味检测.

Detection of Six Kinds of Odor Substance in Coating Textile by Using HS-GC-MS Method

An analytical method of odor testing in coating textile, using headspace gas chromatography coupled with a mass spectrometer, was studied. The odor sources included six kinds of sub- stance, which were the acetone, toluene, DMF, methyl acrylate, ethyl acrylate and butyl acrylate. The DB-5 column and mass detector were selected. The inlet temperature was 160℃ , the split ratio was 8： 1. The initial column temperature was 40℃ , held for lmin. The flow rate of helium gas was 0.6 mL/min. Results showed the good accuracy and wide linearity range of this method. The linear correlated coefficients were between 0. 990 2 - 0. 999 9 and the minium detecting limits of the six compounds were from 0. 008 -0. 189 μg/mL, and the relative standard deviation （RSD） was below 4. 84%. The method was employed for practical testing of commercial nine types of coating fabrics. This method was rapid and convenient, and more objective than sensory odor test, which was expected to be applied for commercial odor determination.