Date

2018

Author

Erciyas, Emre

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According to the Water Framework Directive (2000/60/EC), there is a need for the identification of substances posing a relatively higher risk to the aquatic environment and human health to be included in monitoring and risk assessment studies. Thus, river basin specific pollutants must be identified and regularly monitored by the EU Member States to achieve good ecological water status. This study aims to determine specific pollutants in the Yesilirmak River Basin. The national list of 250 river basin specific pollutants for Turkey, which takes part in Surface Water Quality Regulation, was used as the list of candidate substances. Then, the COMMPS and NORMAN prioritization methods, which are commonly applied in the EU Member States, were separately applied for the identification of Yesilirmak River Basin specific pollutants. A set of 1.5-year surface water quality monitoring data collected from 42 monitoring stations in between August 2016 and January 2018 was used. The candidate 250 chemicals were scored and ranked. Since the ranking results by the COMMPS and NORMAN prioritization methods differed, the COMMPS and NORMAN scores of each substance were combined by using a weighting factor approach in order to obtain a single ranking list and score for each substance. These integrated scores were then ranked again, and 52 dangerous substances were proposed as water phase relevant specific pollutants for the Yesilirmak River Basin. It was seen that especially metals (arsenic, chromium, zinc) and pesticides (DDT, fenarimol, permethrin) attracted the attention in the river basin.

Subject Keywords

Watersheds., Pollutants., Risk assessment.

URI

http://etd.lib.metu.edu.tr/upload/12622499/index.pdf
https://hdl.handle.net/11511/27431

Collections

Graduate School of Natural and Applied Sciences, Thesis