Perraudin Emilie, Budzinski Hélène, Villenave Eric
Laboratoire de Physico et Toxico-Chimie des Systèmes Naturels, UMR 5472 CNRS, Université Bordeaux I, 33405 Talence Cedex, France.
Anal Bioanal Chem. 2005 Sep;383(1):122-31. doi: 10.1007/s00216-005-3398-7. Epub 2005 Oct 19.
Pressurised fluid extraction (PFE) was used for the measurement of 13 polycyclic aromatic hydrocarbons (PAHs) adsorbed on different types of particles: two model particles (PAH-coated silica, PAH-coated graphite) and two natural atmospheric particles (urban dust and diesel exhaust, from NIST reference materials). Samples were analysed by gas chromatography coupled to mass spectrometry. Extraction efficiency was evaluated with internal standard recovery yields and was shown to depend on the nature of the particle, on the structure of the analytes and on the PAH concentration. Extraction conditions (toluene, 130 degrees C, 130 bar, 2 x 8-min static cycles) were optimised to extract PAHs when strongly interacting with solid matrices and were validated by the analysis of two PAH-certified materials.
加压流体萃取（PFE）用于测量吸附在不同类型颗粒上的13种多环芳烃（PAH）：两种模型颗粒（PAH包覆的二氧化硅、PAH包覆的石墨）和两种天然大气颗粒（城市灰尘和柴油废气，来自美国国家标准与技术研究院参考材料）。通过气相色谱-质谱联用对样品进行分析。用内标回收率评估萃取效率，结果表明萃取效率取决于颗粒的性质、分析物的结构和PAH浓度。优化了萃取条件（甲苯，130℃，130巴，2×8分钟静态循环），以在与固体基质强烈相互作用时萃取PAH，并通过对两种PAH认证材料的分析进行了验证。
