Dipartimento di Chimica Inorganica e Analitica-Università di Palermo, Parco d'Orleans 2, 90128 Palermo, Italy.
J Hazard Mater. 2010 Apr 15;176(1-3):339-47. doi: 10.1016/j.jhazmat.2009.11.033. Epub 2009 Nov 13.
This study shows the extraction and analytical conditions for the determination of polycyclic aromatic hydrocarbons (PAHs) in the stone of archaeological and historical interest. The aim of this research was to determine the concentrations, distribution and the main sources of PAHs present in the surface layer of stone of the Temples of Agrigento. Together with PAHs, we analyzed sulphates and nitrates since it has been demonstrated that these are very destructive salts that play an important role in the deterioration of stones. Total PAHs at different sites of the Valley of Temples at Agrigento varied from 18 to 84 microg/kg. Analyses were performed by GC-MS. The relative abundance of molecular weight PAHs, together with the PAHs compound ratios and supported by the total index (by us proposed), demonstrate that the most samples in Hellenistic Agrigento historical buildings owe their PAHs to a predominant single mode of origin, i.e. anthropogenic combustion processes. The same origin of PAHs pollution was confirmed by the good correlations existing between total PAHs concentrations and the content of sulphates and nitrates of the analyzed samples.
本研究展示了从具有考古和历史价值的石材中提取和分析多环芳烃（PAHs）的条件。本研究的目的是确定阿格里真托神庙石材表面层中存在的 PAHs 的浓度、分布和主要来源。除了 PAHs，我们还分析了硫酸盐和硝酸盐，因为已经证明这些盐是非常具有破坏性的，它们在石头的劣化过程中起着重要作用。阿格里真托神庙谷不同地点的总 PAHs 含量从 18 到 84 微克/千克不等。分析是通过 GC-MS 进行的。相对分子量 PAHs 的丰度，以及 PAHs 化合物比值，并辅以我们提出的总指数，证明在古希腊阿格里真托历史建筑中，大多数样本的 PAHs 主要来自单一的人为燃烧过程。PAHs 污染的相同来源也得到了证实，因为分析样本中总 PAHs 浓度与硫酸盐和硝酸盐含量之间存在良好的相关性。
