p. 11 - 24 NIVEAU DES PRINCIPAUX PARAMETRES CHIMIQUES DES EAUX COTIERES ROUMAINES DE LA MER NOIRE Adriana Cociasu Institute Roumain de Recherches Marines Constanta Abstract In the last 25 years, a high eutrophication period, important concen- tration and distribution changes of the chemical parameters from Romanian coastal waters have occured. The paper, based on the obser- vations carried out in the warm season of 1991, analyzes the present state of the main hydrochemical parameters under the conditions of the deterioration in marine coastal environment.