Institute of Geology and Palaeontology - Applied Geology, University of Münster, Corrensstrasse 24, 48149, Münster, Germany.
Institute of Geology and Palaeontology - Applied Geology, University of Münster, Corrensstrasse 24, 48149, Münster, Germany.
J Chromatogr A. 2018 Dec 21;1581-1582:91-99. doi: 10.1016/j.chroma.2018.10.028. Epub 2018 Oct 19.
Proceedings in environmental analytical chemistry of polycyclic aromatic hydrocarbons (PAH) in the past decades cover improvements in laboratory methods as well as new insights in the toxicology of single PAH compounds. A re-evaluation of the established list of 16 priority PAH published by the U. S. Environmental Protection Agency seems overdue. In this study we have applied PAH analysis by atmospheric pressure laser ionization - mass spectrometry (APLI-MS) to NIST 1941b, NIST 1649b, BAM CC013a and IRMM BCR 535 giving further references in addition to the certificates of analysis. Gas chromatography enables to distinguish between different alkylated PAH derivatives whereas liquid chromatography additionally allows detection of PAH tentatively with six or more aromatic rings on the level of chemical formula. For an optimal isomer-specific differentiation, LC-APLI-MS should be used in combination with fluorescence detection. Distribution patterns of 6 and 7-ring PAH are presented for urban dust, marine and harbor sediments and the soil sample. Additionally, a set of 14 nitrogen, sulfur and oxygen-containing polycyclic aromatic compounds were analyzed by APLI and quantified in all reference materials for the first time.
过去几十年，环境分析化学领域中多环芳烃（PAH）的研究进展包括实验室方法的改进以及对单一 PAH 化合物毒理学的新认识。重新评估美国环境保护署公布的 16 种优先 PAH 清单似乎已经迫在眉睫。在本研究中，我们应用大气压激光电离 - 质谱（APLI-MS）分析技术对 NIST 1941b、NIST 1649b、BAM CC013a 和 IRMM BCR 535 进行了 PAH 分析，除了分析证书外，还提供了更多的参考资料。气相色谱可用于区分不同的烷基化 PAH 衍生物，而液相色谱则可在化学式水平上检测出具有六个或更多芳环的 PAH 物质。为了实现最佳的异构体特异性区分，应将 LC-APLI-MS 与荧光检测结合使用。本文展示了城市灰尘、海洋和港口沉积物以及土壤样本中 6 环和 7 环 PAH 的分布模式。此外，我们还首次应用 APLI 分析了一组 14 种含氮、硫和氧的多环芳烃化合物，并对所有参考物质进行了定量分析。
