DBPapers
DOI: 10.5593/SGEM2014/B51/S20.069

ORGANIC SUBSTANCES IN COASTAL MARINE WATERS OF RECREATION ZONE OF SEMBA PENINSULA

E. Demenchuk, O. Ryabkova, I. Krasikov, O. Krylova
Wednesday 1 October 2014 by Libadmin2014

References: 14th International Multidisciplinary Scientific GeoConference SGEM 2014, www.sgem.org, SGEM2014 Conference Proceedings, ISBN 978-619-7105-17-9 / ISSN 1314-2704, June 19-25, 2014, Book 5, Vol. 1, 509-514 pp

ABSTRACT
Input of anthropogenic organic contaminants in coastal marine zone of Semba peninsula from Zelenogradsk to Svetlogorsk (Lesnoye) was analyzed during 2009-2013. Statistically-valid upper confidence bound of possible mean values of oil concentrations calculated for the most unfavorable hydrological conditions or the most adverse water quality period in the annual cycle (p = 0.95) has been used as a water pollution index of small rivers. The content of organic substances in watercourses that are not included in the area of economic and recreational activity (use of tourist complexes, open car parks etc.) was significantly reduced during the observation period (from 1.5 to 0.5 MAC). At the same time some rivers flowing through the resort towns Svetlogorsk and Zelenogradsk are contaminated to a higher degree. Statistically- valid mean values of oil-concentration in those rivers went up from 0.8 to 3.0 MAC respectively. Oil content in sea water in a recreational coastal zone does not exceed acceptable levels. However, high values of chemical oxygen demand (COD) (4-9 MAC), nitrogen-and phosphorus-containing compounds are indicative of untreated sewage from uncontrolled sources

Keywords: organic and oil contaminants, waste waters, coastal waters, monitoring