Polycyclic Aromatic Hydrocarbons in Surface Soils

Nicoleta MUNTEAN, Edward MUNTEAN, Livia ALHAFEZ, Marcel DUDA


Polycyclic aromatic hydrocarbons (PAHs) are a class of organic pollutants intensively studied mainly due to their widespread occurrence in environmental matrix, including surface soils. This study presents some preliminary results on assessment of PAHs contamination of surface soils originating from different locations in Transylvania, covering roadside, residential and agricultural areas. PAHs were determined by high performance liquid chromatography using an Agilent 1100 system with fluorescence detection, able to separate 14 PAHs: naphthalene, acenaphtene, fluorene, phenanthrene, anthracene, pyrene, benz(a)anthracene, chrysene, benzo(b)fluoranthene, benzo(k)fluoranthene, benzo(a)pyrene, dibenz(ah)anthracene, benzo(ghi)perylene and indeno(1,2,3-cd)pyrene. This study proved that PAHs are part of the soil mixture, with total concentrations ranging from 0.09 to 81.40 µg/ kg, the highest recorded values being for chrysene (38.70 µg/ kg), pyrene (14.78 µg/ kg) and indeno(1,2,3-cd)pyrene (10.48 µg/ kg); the highest soil contamination was established for soil originating from Cluj Napoca city center (81.40 µg/ kg).

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