A survey on the Polycyclic Aromatic Hydrocarbons (PAHs) in coastal waters of Persian Gulf – Bushehr

Because of harmful effects and mutation in living organisms, polycyclic aromatic hydrocarbons (PAHs) are important as organic pollutant. In this research concentrations of ۱۶ PAHs were determined in two seasons (summer and winter ۲۰۲۱). The PAHs from seawater samples were extracted by liquid –liquid extraction using of dichloromethan (DCM). Fractionation was done using the silica-alumina column and then then about ۱۶ compouneds of PAHs were determined by gas chromatography- mass spectrometer (GC-Ms). In this analysis, recovery was obtained ۸۵%. There was a significant difference between magnitudes of concentrations of PAHs in two seasons (p<۰.۰۵). In summer and winter,the range of concentration PAHs were ۲.۵۸-۲.۸۰ ng/l and ۳.۶۲- ۳.۸۶ ng/l dry weight, respectively. These magnitudes were less than obtained magnitudes in other areas. The obtained results were shown the main source of PAHs in seawater samples of Soltani channel are originated from pyrolytic and petrogenic sources. Also, three and four cyclic compounds of PAHs were more abundance than five and six cyclic compounds.

Keywords:

Polycyclic aromatic hydrocarbon , Petrogenic , Pyrolytic , Persian Gulf