20.500.12556/RUL-145327 Sedimentary record of polycyclic aromatic hydrocarbons in the Gulf of Trieste (Northern Adriatic Sea) distribution, origin and temporal trend A mid-term study (2003-2013) of polycyclic aromatic hydrocarbons in Gulf of Trieste sediments was conducted at seven sampling sites. The PAH spatial and temporal distribution and origin were determined. The sediments were sampled with a gravity core sampler. After extraction of PAH, their concentrations were determined by gas chromatography. The results of the study show PAH spatial and temporal variability. The highest mean concentration was measured in the marina of Portoroz (1168 ng/g dw), and the lowest at an offshore site (320 ng/g dw). The results show higher concentrations of PAH in coastal areas and a decreasing trend towards the central part of the Gulf of Trieste. The interannual differences in the concentrations of PAH showed a significant downward trend in the marina of Portorož, in the port of Koper and in the offshore site off Piran. No trend was observed at all other sites. Various evaluation indices showed that PAH are predominantly of pyrolytic origin, with a lower proportion of petrogenic origin, especially in the Bay of Koper. The ecological risk assessment found that concentrations of PAH are well below levels associated with adverse biological effects. According to the presented results, this area can be considered as only moderately contaminated with PAH. However, the applied measures to reduce pollution should be continued and intensified. PAH sediments northern Adriatic origin distribution policiklični aromatski ogljikovodiki sedimenti severni Jadran izvor razširjenost true false true Angleški jezik Slovenski jezik Članek v reviji 2023-04-18 08:24:15 2023-04-18 08:24:16 2023-04-19 03:29:45 0000-00-00 00:00:00 2022 0 0 9 str. Vol. 9, art. 946618 2022 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 574 2296-7745 10.3389/fmars.2022.946618 117516547 fmars-09-946618.pdf fmars-09-946618.pdf 1 A38F0FFB4083D736E74C649A812DA89B 4c97d871a7998ebaf43c1740261d7ef09b0c736da59abe1241122a9d59e209d5 f2efa964-ddb1-11ed-a314-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=168162 https://www.frontiersin.org/articles/10.3389/fmars.2022.946618/full 1 7c21c539-ddb1-11ed-a314-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=168161 Fakulteta za pomorstvo in promet 0 0 0