气相色谱-质谱联用法测定塑胶跑道面层中18种多环芳烃
发布时间：2019-01-07 11:48
【摘要】：本文对气相色谱-质谱联用法(GC-MS)测定塑胶跑道面层中18种多环芳烃(PAHs)的前处理方法进行了讨论.以样品颗粒物直径、超声萃取时间、颗粒物存放时间、样品净化方式为试验因素,优选出测定多环芳烃的最佳样品处理条件.称取10目到20目之间的样品0.2 g,加入10 mL乙酸乙酯,60℃超声萃取60 min,取上清液,净化时采用12 mL洗脱剂,氮吹近干后加入3种混合内标溶液,用GC-MS分离和检测.以3倍信噪比计算18种多环芳烃检出限,以10倍信噪比计算定量限,各组分检出限范围为0.0048—0.030 mg·kg~(-1),定量限范围为0.010—0.099 mg·kg~(-1).6次平行测定RSD%均小于10%,样品加标回收率在75.50%—125.19%.方法精密度好,准确度高,适用于塑胶跑道中18种PAHs的日常检测.
[Abstract]:The pretreatment method for the determination of 18 polycyclic aromatic hydrocarbons (PAHs) (PAHs) in plastic runway surface layer by gas chromatography-mass spectrometry (GC-MS) is discussed in this paper. The best sample treatment conditions for the determination of PAHs were selected by using sample particle diameter ultrasonic extraction time particle storage time and sample purification method as experimental factors. The supernatant was extracted by ultrasonic extraction at 60 鈩，
本文编号：2403626
[Abstract]:The pretreatment method for the determination of 18 polycyclic aromatic hydrocarbons (PAHs) (PAHs) in plastic runway surface layer by gas chromatography-mass spectrometry (GC-MS) is discussed in this paper. The best sample treatment conditions for the determination of PAHs were selected by using sample particle diameter ultrasonic extraction time particle storage time and sample purification method as experimental factors. The supernatant was extracted by ultrasonic extraction at 60 鈩，
本文编号：2403626
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