基于气相色谱-串联质谱法（GC-MS/MS）建立了测定塑胶跑道面层中4种新型增塑剂的检测方法。剪碎后的跑道面层样品经20 mL乙酸乙酯于62 ℃、180 W超声提取41 min，过0.22 μm聚四氟乙烯（PTFE）滤膜，目标物经TG-5SilMS色谱柱分离，在电子轰击源（EI）下进行选择反应监测（SRM），外标法定量。基于Box-bennken设计了响应曲面，得到超声提取法中超声温度、超声时间、超声功率的最佳值。结果表明：在0.05~2.00 mg/L线性范围内，4种新型增塑剂的相关系数（r ²）均大于0.999，检出限（LOD）为0.4~0.8 mg/kg，平均加标回收率为95.5%~114.5%，相对标准偏差（RSD）为2.3%~5.8%（n=6）。运用该方法对30批次塑胶跑道面层样品进行检测。结果23批次样品均检出新型增塑剂，其中对苯二甲酸二辛酯（DOTP）的检出率高达66.7%，最高检出浓度为6.3×10³ mg/kg。该方法简便、准确，适用于检测塑胶跑道面层中4种新型增塑剂。

A method for the determination of four emerging plasticizers in plastic track surface was developed by gas chromatography-tandem mass spectrometry (GC-MS/MS). The shredded plastic track surface were extracted by ultrasonic extraction with 20 mL ethyl acetate at 62 ℃ and 180 W for 41 min, and filtered through 0.22 μm polytetrafluoroethylene (PTFE) membrane. The target compounds were separated by TG-5SilMS column, and then determined by selective reaction monitoring (SRM) mode under electron bombardment source (EI), and quantified by external standard method. The response surface methodology (RSM) based on Box-Behnken design was used to determine the optimal values of ultrasonic temperature, ultrasonic time, and ultrasonic power in the ultrasonic extraction method. The results showed that the correlation coefficients (r² ) of four emerging plasticizers were all over than 0.999 in the linear range of 0.05~2.00 mg/L, the limits of quantification (LOD) were 0.4~0.8 mg/kg, the average recoveries ranged from 95.5% to 114.5%, with relative standard deviations (RSD) of 2.3%~5.8% (n=6). This method was used to detect 30 batches of plastic track surface. As a result, the emerging plasticizers were detected in 23 batches of plastic track surface in varying degrees. The highest detection rate of DOTP was 66.7%, and the highest detection concentration of DOTP was 6.3×10³ mg/kg. The method was simple, accurate, and suitable for the determination of four emerging plasticizers in plastic track surface.