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采用顶空-气/质联用法(HS-GC/MS)检测分析了轮胎中7种挥发性异味物质。实验对影响分析效果的主要条件进行了优化。采用外标法进行定量。在优化的条件下,方法线性关系良好,7种挥发性异味物质在线性范围内的相关系数均大于0.99,方法的检出限为0.180~43.5μg/kg,相对标准偏差(RSD,n=6)在2.5%~9.9%之间,实际样品加标水平的回收率为81.7%~124.4%。该方法具有较好的精密度及加标回收率,准确可靠,可用于轮胎中典型挥发性异味物质的检测。
Seven kinds of volatile odorants were analyzed by headspace-air / mass spectrometry (HS-GC / MS). The experiment optimizes the main conditions affecting the analysis results. External standard method for quantitative. Under the optimal conditions, the method has a good linear relationship. The correlation coefficients of the seven volatile odorant compounds in the linear range were both greater than 0.99. The detection limits were 0.180 ~ 43.5 μg / kg, and the relative standard deviations (RSD, n = 6 ) Ranged from 2.5% to 9.9%. The recoveries of spiked samples from the actual samples ranged from 81.7% to 124.4%. The method has good precision and recovery rate, accurate and reliable, can be used for the detection of typical volatile odorant in the tire.