p. 269 - 275 DONNEES PRELIMINAIRES CONCERNANT L'INFLUENCE DES EAUX USEES CONTENANT DES PRODUITS PETROLIERS SUR L'EAU MARINE Octavian Serbanescu et Victoria Piescu Institute Roumain de Recherches Marines Constanta Abstract The paper presents some preliminare data on the chemical and bio- chemical oxygen demand of the nutritive substances, suspended mat- ters, pH, salinity, phenol and the petroleum products content etc. Modifications after the mixture of the sea with the petrochemical industrual wastewater.