Bursa Topraklarında Kış Mevsiminde Polihalkalı Aromatik Hidrokarbon (PAH) Kaynaklı Kirlilik Seviyesinin Belirlenmesi

Öz

Toprak, polihalkalı aromatik hidrokarbon (PAH) bileşikleri gibi yarı uçucu organik kirleticiler için karasal çevredeki en önemli rezerv alanıdır. Toprağın PAH’lara ilgisi büyüktür ve bu kirleticiler için doğal bir alıcı ortam gibi davranır. Bu çalışmada, sanayi ve tarım kenti olan Bursa’da topraklardaki PAH kirliliğinin bölgesel değişiminin kış mevsimi için belirlenmesi amaçlanmıştır. Bu kapsamda, 20 farklı noktadan yüzeysel toprak örnekleri alınmıştır. ∑12 PAH konsantrasyonları trafik+mangal+yerleşim bölgesi toprağında 4970 ng/g KM, çimento ve demir-çelik fabrikalarının bulunduğu bölge topraklarında ise sırasıyla 4382 ng/g KM ve 4000 ng/g KM olarak belirlenmiştir. Demir-çelik ve çimento fabrikalarının önemli birer PAH kaynağı olduğu tespit edilmiştir. Kirliliğin en az olduğu toprakların ise kırsal alanlarda yer aldığı görülmüştür. Toksisite değerlendirmelerini yapabilmek için her bir PAH türüne ait TEF değerleri kullanılarak PAH türlerine ait konsantrasyonlar BaP eşdeğer konsantrasyonuna (BaPeq) çevrilmiştir. Örnekleme noktalarında  ∑12 BaPeq değerleri 0,1 ile 381,8 ng/g KM arasında değişim göstermiştir. 

Anahtar Kelimeler

• Bursa,Toprak Kirliliği,PAH

Kaynakça

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