Начало / Университетът / Факултети / Биологически факултет / Официални издания / Годишник на Софийския университет - КНИГА 4 Научни сесии на Биологическия факултет / Том 104, 2019 г. - Международна научна конференция "Климентови дни" - 2018 / - Aurel Nuro, Elda Marku, Bledar Murtaj – EVALUATION OF ORGANOCHLORINE PESTICIDES AND PCB IN SURFACE WATERS OF MYZEQEJA AREA, ALBANIA

   

EVALUATION OF ORGANOCHLORINE PESTICIDES AND PCB IN SURFACE WATERS OF MYZEQEJA AREA, ALBANIA

AUREL NURO*, ELDA MARKU, BLEDAR MURTAJ

Department of Chemistry, Faculty of Natural Sciences, Tirana University, Tirana, Albania
*Corresponding author: aurel.nuro@fshn.edu.al

 

Keywords: Myzeqeja; organochlorine pesticides; PCB markers; Water analyze; GC/ECD

Abstract: Myzeqeja is the main agricultural area in Albania. It is located in South-West of central Albania. Organochlorine pesticides such as DDT, Lindane, Endosulfanes, Aldrines, etc. were used in this area for many years (from 1945 to 1992) firstly for fighting malaria vectors (mosquitos) and after that for agricultural purposes. Also, this area is affected from industrial activity (oil extraction and processing industry) and urban pollution. In this study data about concentrations of organochlorine pesticides and PCBs (polychlorinated biphenyls) in surface waters of Myzeqeja area are presented. Organochlorine pollutants are very stable compounds. They can be found in environment for many years after their application. Water irrigation and rainfall realize the transportation of organic pollutants from soil to underground and surface waters. Myzeqeja water stations were selected for six streams, five channels and Semani River (five stations). Water samples were sampled in December 2017. For isolation of organochlorine pesticides and PCBs liquid-liquid extraction assisted with n-Hexane as extraction solvent was used. The simultaneous analysis of organochlorine pollutants in water samples was performed by gas chromatography technique using electron capture detector (GC/ECD). Rtx-5 capillary column (30 m x 0.33 mm x 0.25 um) was used for separation of 17 organochlorine pesticides according to EPA 8081A and 7 PCB markers. Relatively high concentrations of organochlorine pesticides were detected in water samples of Myzeqeja area. The presence of pesticides shows impact of previous use of pesticides in this area. PCB volatile were found in higher level because of atmospheric deposition. Levels of organochlorine pollutants in surface water samples of Myzeqeja region were higher than reported values for other areas of Albania because elevated agricultural and industrial activity in this area.

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