Polynuclear Aromatic Hydrocarbons (PAHs) in the Eastern Mediterranean Sea

摘要

PAHs have been monitored for several years in the eastern Mediterranean Sea as part of the MEDPOL Programme (UNEP, 1986; 1995). Figure 1 shows the location of the major sampling sites around the Mediterranean coast. Yilmaz et al., (1991) have discussed how the distributions of dissolved and dispersed polyaromatic hydrocarbons measured in the eastern Mediterranean in 1989 were related to the local oceanography and how part of the observed concentrations were derived from phytoplankton. For seawater analyses, 2.5 litres of seawater (or discharged waste) were extracted on board ship (or at the sampling location) with n-hexane. PAH concentrations were estimated by comparison of the fluorescence at 360 nm (excitation at 310 nm) with that of hexane solutions of chrysene (UNEP, 1986).