Effect of solid waste landfill organic pollutants on groundwater in three areas of Sicily (Italy) characterized by different vulnerability |
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Authors: | Indelicato Serena Orecchio Santino Avellone Giuseppe Bellomo Sergio Ceraulo Leopoldo Di Leonardo Rossella Di Stefano Vita Favara Rocco Candela Esterina Gagliano La Pica Leonardo Morici Sabina Pecoraino Giovannella Pisciotta Antonino Scaletta Claudio Vita Fabio Vizzini Salvatrice Bongiorno David |
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Institution: | 1.Dipartimento di Scienze della Terra e del Mare, Università di Palermo, via Archirafi 18, 90123, Palermo, Italy ;2.Dipartimento di Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche, Università di Palermo, Viale delle Scienze, I-90128, Palermo, Italy ;3.Istituto Nazionale di Geofisica e Vulcanologia, Sezione di Palermo, Via Ugo La Malfa 153, 90144, Palermo, Italy ;4.CoNISMa, Piazzale Flaminio 9, 00196, Roma, Italy ; |
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Abstract: | The aim of this study was to obtain information on the presence and levels of hazardous organic pollutants in groundwater located close to solid waste landfills. Eighty-two environmental contaminants, including 16 polycyclic aromatic hydrocarbons (PAHs), 20 volatile organic compounds (VOCs), 29 polychlorinated biphenyls (PCBs), 7 dioxins (polychlorinated dibenzo-p-dioxins, PCDDs) and 10 furans (polychlorinated dibenzofurans, PCDFs) were monitored in areas characterised by different geological environments surrounding three municipal solid waste landfills (Palermo, Siculiana and Ragusa) in Sicily (Italy) in three sampling campaigns. The total concentrations of the 16 PAHs were always below the legal threshold. Overall, the Fl/Fl + Py diagnostic ratio revealed that PAHs had a petrogenic origin. VOC levels, except for two notable exceptions near Palermo landfill, were always below the legal limit. As concerns PCB levels, several samples were found positive with levels exceeding the legal limits. It is worth noting that the % PCB distribution differs from that of commercial compositions. In parallel, some samples of groundwater containing PCDDs and PCDFs exceeding the legal threshold were also found. Among the 17 congeners monitored, the most abundant were the highest molecular weight ones. |
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