Aysel ALKAN UÇKUN, Ertan YOLOĞLU, Miraç UÇKUN

Atatürk Baraj Gölü (Fırat Nehri) Su, Sediment ve Midyelerinde (Unio mancus) Metallerin Mevsimsel İzlenmesi.

Bu çalışmada, Atatürk Baraj Gölü’nden (Türkiye) su, sediment ve Unio mancus (Lamarck, 1819) örnekleri 2015-2016 yılları arasında farklı mevsimlerde toplanmış ve örnekler belirli ağır metal içerikleri (Fe, Cu, Pb, As, Hg, Cr, Mn, Cd, Co, Zn ve Ni) için analiz edilmiştir. Ağır metal alımını ve dağılımını etkileyen faktörler de ayrı ayrı tartışılmıştır. Ağır metallerin miktarı bir indüktif olarak eşleşmiş plazma kütle spektrometresi (ICPMS) kullanılarak belirlenmiştir. Sonuçlar, sudaki metal konsantrasyonunun WHO ve USEPA tarafından önerilen standart içme suyu değerinden önemli derecede yüksek olduğunu fakat midyelerdeki metal konsantrasyonunun Dünya Sağlık Örgütü (WHO)’nün midyeler için önerdiği değerden genel olarak daha düşük olduğunu göstermiştir. Yalnız arsenik ve kurşun düzeyleri bütün örnekleme noktaları ve mevsimlerde hoş görülebilir sınırdan yüksektir. Sedimentteki metal kalıntı düzeyleri su ve midyelerdekinden daha yüksektir. Su ve midye örneklerinde Demir, sediment örneklerinde ise Mangan baskındır. Sonuçlar, Atatürk Baraj Gölü’nün farklı ağır metaller, endüstriyel aktiviteler ve kentsel atıklar tarafından yıllardır kirletildiğini göstermektedir.

Anahtar Kelimeler:

Atatürk Baraj Gölü, Metal, ICPMS, Sediment, Midye, Unio mancus

Seasonal Monitoring of Metals in Water, Sediment and Mussel (Unio mancus) from Atatürk Dam Lake (Euphrates River)

In this study, water, sediment and Unio mancus (Lamarck, 1819) samples were collected from Atatürk Dam Lake (Turkey) seasonally between 2015-2016 years and samples were analysed for certain heavy metal contents (Fe, Cu, Pb, As, Hg, Cr, Mn, Cd, Co, Zn, and Ni). Factors affecting heavy metals uptake and distribution have also been discussed separately. The amounts of heavy metals were quantified by an inductively coupled plasma mass spectrometer (ICPMS). The results showed that the metal concentrations in water were significantly higher than the value of standart drinking water recommended by the WHO and USEPA but metal concentrations in mussels were generally lower than the levels for mussels recommended by World Health Organization (WHO). Only levels of arsenic and lead were higher than permissible limits in all sampling points and seasons. Metal residue levels were higher in the sediments than in the water and mussel. Fe was the predominant residue in water and mussel samples as to Mn was dominant in sediment samples. Results suggest that Atatürk Dam Lake was polluted by different heavy metals, industrial activities and urban wastes for years.

Keywords:

Atatürk Dam Lake, Metal, ICPMS, Sediment, Mussel,

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