Διακίνηση και χημική συμπεριφορά βαρέων μετάλλων σε θαλάσσια περιοχή επηρεαζόμενη από βιομηχανική ρύπανση ( ΒΔ Σαρωνικός) ; Trace metals distribution and chemical behaviour in a coastal marine area affected by industrial pollution CNW Saronicos Gulf

The main objectives of this thesis were: α) to investigate the levels and behaviour of heavy metals in the marine environment of the NW Saronikos gulf, where industrial activity, coastal towns and a unique geological background (NW edge of the Hellenic volcanic arc) are combined and b) to assess the impact of the coastal industries emphasizing on the oil refinery ‘’MOTOR OIL HELLAS’’. After extended bibliographic search 8 seasonal samplings were conducted (2006-2007) in 16 stations of various depths using equipment of the laboratory of environmental chemistry and boats supplied mainly by ‘’MOTOR OIL HELLAS’’. The heavy metals Al, Cd, Cr, Cu, Fe, Mn, Ni, Pb, V, Zn were determined in seawater, sediment and processed effluent samples using standard and published methods that included various pre-concentration techniques and final measurement with atomic absorption spectrometry. The methods were validated in order to estimate the limits of detection, repeatability and accuracy. The data of the present study were compared with similar data from other parts of Saronikos gulf and other marine areas. Finally the data were recorded in a specifically designed access database in order to be readily accessible for future comparisons. Despite the fact that near the industries the coasts appear aesthetically deteriorated the marine environment is not severely influenced by heavy metal pollution due to adequate water circulation and dilution. Therefore it is possible to achieve restoration of the coasts in combination with the establishment of regular monitoring to prevent environmental pollution. ; Οι κύριοι στόχοι της διατριβής ήταν: α) να διερευνηθούν τα επίπεδα και η συμπεριφορά των βαρέων μέταλλων στο θαλάσσιο περιβάλλον του ΒΔ Σαρωνικού, όπου συνδυάζονται η βιομηχανική επιβάρυνση, παράκτιοι οικισμοί και ιδιαίτερο γεωλογικό υπόβαθρο (βδ άκρο του ελληνικού ηφαιστειακού τόξου) και β) να εκτιμηθεί η επίδραση των παρακτίων βιομηχανιών με έμφαση στο διυλιστήριο της MOTOR OIL HELLAS. Έγινε εκτεταμένη βιβλιογραφική έρευνα, και ...