Material Measurement Laboratory, National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, MD 20899, USA.
Anal Bioanal Chem. 2013 Jun;405(16):5583-93. doi: 10.1007/s00216-013-6957-3. Epub 2013 Apr 18.
Oxygenated polycyclic aromatic hydrocarbons (oxy-PAHs) have recently received much attention in discussions regarding the negative impacts of particulate matter (PM) on human health and the environment. The National Institute of Standards and Technology provides several environmental matrix standard reference materials (SRMs) with certified and reference values for polycyclic aromatic hydrocarbons (PAHs) and nitrated PAHs. In this study, the concentrations of oxygenated PAHs are determined in three air PM SRMs (1649b, 1648a, and 2786) and three diesel PM SRMs (1650b, 2975, and 1975) using two independent gas chromatography-mass spectrometry methods. Concentrations of oxy-PAHs were at the milligrams per kilogram level with higher overall concentrations in diesel PM (up to 50 mg/kg for 9,10-anthraquinone). One of the highest oxy-PAH concentrations (up to 5 mg/kg) measured in the air particulate SRMs was for 7,12-benz[a]anthracenquinone. These results suggest that oxygenated PAHs should not be neglected in the analysis of PM as their concentrations can be as high as those of some PAHs and are one to two orders of magnitude higher than those for nitro-PAHs.
含氧多环芳烃（oxy-PAHs）在讨论颗粒物（PM）对人类健康和环境的负面影响时受到了广泛关注。美国国家标准与技术研究院（NIST）提供了几种环境基质标准参考物质（SRMs），其中包含多环芳烃（PAHs）和硝化多环芳烃（NPAHs）的认证和参考值。在这项研究中，使用两种独立的气相色谱-质谱法，对三种空气 PM SRMs（1649b、1648a 和 2786）和三种柴油机 PM SRMs（1650b、2975 和 1975）中的含氧多环芳烃浓度进行了测定。含氧多环芳烃的浓度处于毫克/千克水平，柴油机 PM 中的浓度总体较高（9,10-蒽醌最高可达 50mg/kg）。在空气颗粒物 SRMs 中，测得的最高含氧多环芳烃浓度之一（高达 5mg/kg）是 7,12-苯并[a]蒽醌。这些结果表明，在 PM 分析中不应忽视含氧多环芳烃，因为它们的浓度可能与某些 PAHs 相当，并且比硝基-PAHs 高 1 到 2 个数量级。
