【摘要】：本文對(duì)氣相色譜-質(zhì)譜聯(lián)用法(GC-MS)測(cè)定塑膠跑道面層中18種多環(huán)芳烴(PAHs)的前處理方法進(jìn)行了討論.以樣品顆粒物直徑、超聲萃取時(shí)間、顆粒物存放時(shí)間、樣品凈化方式為試驗(yàn)因素,優(yōu)選出測(cè)定多環(huán)芳烴的最佳樣品處理?xiàng)l件.稱取10目到20目之間的樣品0.2 g,加入10 mL乙酸乙酯,60℃超聲萃取60 min,取上清液,凈化時(shí)采用12 mL洗脫劑,氮吹近干后加入3種混合內(nèi)標(biāo)溶液,用GC-MS分離和檢測(cè).以3倍信噪比計(jì)算18種多環(huán)芳烴檢出限,以10倍信噪比計(jì)算定量限,各組分檢出限范圍為0.0048—0.030 mg·kg~(-1),定量限范圍為0.010—0.099 mg·kg~(-1).6次平行測(cè)定RSD%均小于10%,樣品加標(biāo)回收率在75.50%—125.19%.方法精密度好,準(zhǔn)確度高,適用于塑膠跑道中18種PAHs的日常檢測(cè).
[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，

本文編號(hào)：2403626