Analytical method, pattern and sources of polycyclic aromatic hydrocarbons (PAHs) in the stone of the Temples of Agrigento (Italy)

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Abstract

This study shows the extraction and analytical conditions for the determination of polycyclic aromatichydrocarbons (PAHs) in the stone of archaeological and historical interest. The aim of this research wasto determine the concentrations, distribution and the main sources of PAHs present in the surface layerof stone of the Temples of Agrigento. Together with PAHs, we analyzed sulphates and nitrates since it hasbeen demonstrated that these are very destructive salts that play an important role in the deteriorationof stones. Total PAHs at different sites of the Valley of Temples at Agrigento varied from 18 to 84 g/kg.Analyses were performed by GC–MS. The relative abundance of molecular weight PAHs, together withthe PAHs compound ratios and supported by the total index (by us proposed), demonstrate that the mostsamples in Hellenistic Agrigento historical buildings owe their PAHs to a predominant single mode oforigin, i.e. anthropogenic combustion processes. The same origin of PAHs pollution was confirmed by thegood correlations existing between total PAHs concentrations and the content of sulphates and nitratesof the analyzed samples.
Lingua originaleEnglish
pagine (da-a)339-347
Numero di pagine9
RivistaJournal of Hazardous Materials
Volume176
Stato di pubblicazionePublished - 2010

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All Science Journal Classification (ASJC) codes

  • Environmental Engineering
  • Environmental Chemistry
  • Waste Management and Disposal
  • Pollution
  • Health, Toxicology and Mutagenesis

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