Determination of heterocyclic aromatic amines in airborne particulate matter (PM2.5 and PM10) from different emission sources by ultra -high performance liquid chromatography-tandem mass spectrometry

摘要

A novel ultrasound assisted extraction procedure was developed prior to the determination of heterocyclic aromatic amines by ultra-high performance liquid chromatography-tandem mass spectrometric detection. Airborne particulate matter PM2.5 and PM10 samples (n = 34) were collected during the spring season from urban residential emission sites, as well as from biomass burning. The organic compounds were extracted from the quartz fiber filter by a quick ultrasound assisted methanol-based extraction. Linearity of the method was in the range 0.58 ng g(-1) to 50 ng g(-1) with correlation coefficients (R-2) from 0.993 to 0.999. The limits of detection resulted to be between 0.19 ng g(-1) and 3.27 ng g(-1). The relative standard deviations varied from 5.4 to 8.5 (n = 3). The recoveries ranged from 83% to 109% for all of the analytes. Concentrations of the analytes in PM2.5 were between 4.1 ng m(-3) (2.07 ng g(-1)) and 240.9 ng m(-3) (120.5 ng g(-1)), meanwhile in PM10, were from 23.0 ng m(-3) (11.4 ng g(-1)) to 355.1 ng m(-3) (176.2 ng g(-1)). The proposed methodology resulted simple, rapid and accurate for its application to the determination of heterocyclic aromatic amines in airborne particulate matter from different emission sources. (C) 2018 Elsevier B.V. All rights reserved.