Present Level of Petroleum Hydrocarbons in Seawater Associated with Offshore Exploration Activities from the Romanian Black Sea Sector
AbstractThe objective of the study was to determinate the total content of petroleum hydrocarbons (TPH) in seawater of the Romanian Black Sea Sector during offshore exploration activities in February - June 2015. TPH concentrations in seawater samples, collected from 3 locations (depth from 200 to 1,625 m) were quantified by ultra-violet fluorescence spectroscopy. Petroleum hydrocarbons were present in all samples and their concentrations were highly variable, ranging from 28.8 to 271.3 (g/L) with the mean of 110.2 ± 60.0 (g/L), value significantly different to the average of 55.4 ± 86.3 (g/L) recorded in the monitoring of seawater with offshore activities during 2011-2014. Over the 5-year period, the TPH concentrations in study area followed a steady increasing trend.
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