Polycyclic aromatic hydrocarbons (PAHs), the family of organic contaminations, have been shown to have negative effects on human health. However, until now, the comprehension on occurrence, distribution, and risk assessment of human exposure to PAHs has been limited in Vietnam. In this work, a capillary gas chromatography coupled with electron impact ionization tandem mass spectrometry (GC-EI-MS/MS) has been introduced for analysis of 16 PAHs in some particulate matter samples. PAHs have been separated on the TG 5 ms capillary gas chromatographic column and detected by tandem mass spectrometry in multiple reaction monitoring mode. The PAHs in the particulate matter (PM 2.5 and PM 10) samples were extracted by ultrasonic-assisted liquid extraction and cleaned up by an acidic silica gel solid phase extraction. The linearity range of all analyzed PAHs was from 5 to 2000 ng mL⁻¹ with R² ≥0.9990. Limit of detection (LOD) of PAHs in particulate matter sample was from 0.001 ng m⁻³ (Br-Naph) to 0.276 ng m⁻³ (Fln). The recovery of PAHs was investigated by international proficiency testing samples. The recoveries of PAHs in proficiency testing sample ranged from 79.3% (Chr) to 109.8% (IcdP). The in-house validated GC-EI-MS/MS method was then applied to analysis of some particulate matter samples that were collected in the Hanoi areas. The total concentrations of PAHs in several brands of samples collected from Hanoi were found in the range of 226.3 ng m⁻³–706.43 ng m⁻³. Among the studied compounds, naphthalene was found at high frequency and ranged from 106.5 ng m⁻³ to 631.1 ng m⁻³. The main distribution of the PAHs in particulate matter samples was two-ring and three-ring compounds.

中文翻译：

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气相色谱-串联质谱（GC-MS / MS）分析航空颗粒物样品中的多环芳烃

多环芳烃（PAHs）是一种有机污染物，已被证明对人类健康有负面影响。但是，到目前为止，越南对人类暴露于PAHs的发生，分布和风险评估的理解还很有限。在这项工作中，引入了毛细管气相色谱结合电子碰撞电离串联质谱（GC-EI-MS / MS）来分析某些颗粒物样品中的16种多环芳烃。PAHs已在TG 5 ms毛细管气相色谱柱上分离，并通过串联质谱在多反应监测模式下进行检测。颗粒物（PM 2.5和PM 10）样品中的PAHs通过超声辅助液体萃取进行萃取，并通过酸性硅胶固相萃取进行净化。^-1与[R ² ≥0.9990。颗粒物样品中PAHs的检出限（LOD）为0.001 ng m ^-3（Br-Naph）至0.276 ng m ^-3（Fln）。PAHs的回收率通过国际能力测试样本进行了调查。能力验证样品中多环芳烃的回收率从79.3％（Chr）到109.8％（IcdP）不等。然后将经过内部验证的GC-EI-MS / MS方法应用于河内地区收集的一些颗粒物样品的分析。从河内收集的多个品牌样品中的PAHs总浓度范围为226.3 ng m ^-3 –706.43 ng m ^-3。在研究的化合物中，发现的萘含量很高，范围为106.5 ng m ^-3到631.1 ng m ^-3。颗粒物样品中多环芳烃的主要分布是二环和三环化合物。