İSMAİL KIR, SELDA TEKİN ÖZAN, Yusuf TUNCAY

Kovada Gölü'nün su ve sedimentindeki bazı ağır metallerin mevsimsel değişimi

05.04.2005-23.02.2006 tarihleri arasında yapılan bu çalışmada Kovada Gölü’nün su ve sedimentindeki bazı ağır metallerin birikiminin incelenmesi amaçlanmıştır. Örneklerin ağır metal analizi ICP-OES cihazı ile yapılmıştır. Kovada Gölü’nün suyunda yapılan ağır metal analizinde Fe her mevsimde, Zn İlkbahar-2005 ve Kış-2006’da, Al sadece Yaz-2005’de ve Ni sadece İlkbahar- 2005’de belirlenmiştir. Buna karşın Mn Kış-2006’da, Cd, Cr, Cu ve Pb tüm mevsimlerde ICP-OES’nin analiz limitinin altında çıkmıştır. Suda en fazla bulunan metalin Fe olduğu tespit edilmiştir. Suda tespit edilen metallerin yaz ve ilkbahar aylarında arttığı saptanmıştır. Kovada Gölü’nün sedimentinde yapılan ağır metal analizinde Cr, Cu, Fe, Mn, Pb, Zn, Al ve Ni tüm mevsimlerde belirlenirken Cd Yaz-2005 ve Sonbahar-2005’de ICP-OES’nin analiz limitinin altında kalmıştır. Sedimentte en fazla biriken metal Al’dur. Metal birikiminin yaz aylarında en yüksek düzeye ulaştığı belirlenmiştir. Sonuç olarak; Kovada Gölü’nün suyunda tespit edilen ağır metal miktarlarının Tarım ve Köy İşleri Bakanlığı’nın verdiği sucul ortamda ağır metallerin kabul edilebilir değerlerine göre Fe’in Yaz-2005, Zn’nun İlkbahar-2005 ve Kış-2006’daki miktarları dışında herhangi bir tehlikenin olmadığı görülmektedir.

Anahtar Kelimeler:

su kirliliği, mevsimsel değişimler, Türkiye, ağır metaller, su kalitesi

The seasonal variations of some heavy metals in Kovada Lake's water and sediment

The seasonal variations of some heavy metals in Kovada Lake’s water and sediment. This study which was carried out between 05.04.2005-23.02.2006 aimed to investigate accumulation of some heavy metals in water and sediment of Kovada Lake. The heavy metal analysis of samples were carried out using ICP-OES. The results of heavy metal analysis in Kovada Lake’s water, Fe in all seasons, Zn in Spring-2005 and Winter-2006, Al in only Summer-2005 and Ni in only Spring-2005 were determined. Although this, Mn in Summer-2005 and, Cd, Cr, Cu and Pb in all seasons were below detection limit of ICP-OES. It was determined that Fe was the highest metal in water. Heavy metal levels in water were increased in summer and spring months. The results of heavy metal analysis of sediment, while Cr, Cu, Fe, Mn, Pb, Zn, al and Ni were determined in all seasons, Cd was below detection limit in summer-2005 and autumn-2005. It was determined that al was the highest metal in sediment. The metal concentrations reached the maximum level in summer months. There is not any danger according to acceptable levels of heavy metal in water given by Ministry of agriculture and Rural affairs in Kovada Lake’s water except Fe in Summer-2005 and Zn in Spring-2005 and Winter-2005.

Keywords:

water pollution, seasonal variation, Turkey, heavy metals, water quality,

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