Hatice PARLAK, Ayşe ÇAKIR, MELTEM BOYACIOĞLU, Özlem Çakal ARSLAN

Heavy Metal Deposition in Sediments from the delta of the Gediz River (Western Turkey): A preliminary study

Bir Ön Çalışma: Gediz Nehri bölgede tarımsal açıdan önemli olduğu kadar deltası da Dünya Doğal Yaşamı Koruma Federasyonu tarafından Önemli Kuş sahası olarak değerlendirilmiştir. Bunun yanı sıra, Gediz Deltası 1998 yılından beri Ramsar alanı olarak koruma altındadır. Öte yandan Gediz Nehri’nin tarımsal, evsel ve endüstriyel atıklar ile yoğun bir şekilde kirlendiği rapor edilmektedir. Bu ön araştırmada Gediz Deltasından toplanmış sediment örneklerinde bazı ağır metaller (As, Pb, Cd, Ni, Cu, Co ve Cr) analiz edilerek kirliliğin etkisi tayin edilmeye çalışılmıştır. Elde edilen sonuçlara göre, As, Cu, Cd, Co, Ni ve Pb için bir kirlilik riski olmadığı sonucuna varılabilir. Bununla beraber, arıtma tesisi olmasına rağmen özellikle deri sanayinin atık sularının döküldüğü kanalın birleştiği yer olan istasyon 2 ve 3’de yüksek Cr içeriği saptanmıştır (2565.5 ppm maksimum).

Anahtar Kelimeler:

ağır metaller, kirlilik, Türkiye, su kirliliği, çökelti

Gediz Nehri Deltası (Batı Türkiye) sedimentlerinde ağır metal birikimi

The Gediz River is of great importance for agriculture in the region as well as its delta being an extensive wetland, qualified as an Important Bird Area by the WWF. Besides this, the delta has been protected as a Ramsar site since 1998. On the other hand it has been reported that the river is heavily polluted by agricultural, domestic and industrial discharges. In this preliminary investigation the deposition of some heavy metals (As, Pb, Cd, Ni, Cu, Co and Cr) in sediments of the delta was analyzed to estimate the effect of pollution. According to the results, it can be concluded that there is no pollution risk for As, Cu, Cd, Co, Ni and Pb. However, a high Cr content (2565.5 ppm maximum) was detected especially at station 2 and 3, where the wastewater of the leather industry was discharged into the channel connected to station 2, even though the plant has a treatment system.

Keywords:

heavy metals, pollution, Turkey, water pollution, sediment,

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