Deniz Suyu Ve Mineral Sulardaki Bazı Eser Elementlerin Al(oh)3 İle Birlikte Çöktürülerek Ayrılması Ve Faas İle Tayini
Yükleniyor...
Dosyalar
Tarih
item.page.authors
Süreli Yayın başlığı
Süreli Yayın ISSN
Cilt Başlığı
Yayınevi
Fen Bilimleri Enstitüsü
Institute of Science and Technology
Institute of Science and Technology
Özet
Bu çalışmada, sulu çözeltilerde, deniz suyu ve mineral su örneklerinde bulunan kadmiyum, bakır ve kurşunun alevli atomik absorpsiyon spektrometri ile tayini için bir alüminyum hidroksitle birlikte çöktürme metodu araştırılmıştır. Çalışılan elementler için, pH’ın etkisi, taşıyıcı element miktarı, santrifüjleme zamanı, asit konsantrasyonu ve olası matriks iyonların etkisi gibi birlikte çöktürme parametreleri detaylı bir şekilde incelenmiştir. Kadmiyum, kurşun ve bakırın alüminyum hidroksitle pH 7’de % 2-3 civarında bağıl standart sapmalar ile kantitatif bir şekilde ( 95%) birlikte çöktüğü bulunmuştur. Tayin sınırları (3), kadmiyum için 6 ng ml-1, bakır için 3 ng ml-1 ve kurşun için 16 ng ml-1’dır. Önerilen bu metodun doğruluğu, CRM-SW 312205 deniz suyu standart referans materyali ve standart ekleme yapılmış deniz suyu ve mineral su örneklerinin analizi ile test edilmiştir. Elde edilen sonuçlar, bu metodun eser miktarlarda Cu, Cd ve Pb içeren su örneklerinin analizine uygulanabileceğini göstermektedir.
In this study, an aluminum hydroxide coprecipitation method for the determination of cadmium, copper and lead by flame atomic absorption spectrometry in aqueous solutions, seawater and mineral water samples has been investigated. The coprecipitation conditions, such as the effect of the pH, the amount of carrier element, the centrifugation time, acid concentration and the effect of possible matrix ions were examined in detail for the studied elements. It was found that cadmium, copper and lead are coprecipitated quantitatively ( 95%) with aluminum hydroxide at pH 7 with low RSD values of around 2-3 %. Detection limits (3) were 6 ng ml-1 for Cd, 3 ng ml-1 for Cu and 16 ng ml-1 for Pb. The method proposed was validated by the analysis of CRM-SW 312205 seawater standard reference material and spiked mineral water and seawater samples. The obtained results showed that this method is applicable to analyze the water samples containing trace amount of Cu, Cd and Pb.
In this study, an aluminum hydroxide coprecipitation method for the determination of cadmium, copper and lead by flame atomic absorption spectrometry in aqueous solutions, seawater and mineral water samples has been investigated. The coprecipitation conditions, such as the effect of the pH, the amount of carrier element, the centrifugation time, acid concentration and the effect of possible matrix ions were examined in detail for the studied elements. It was found that cadmium, copper and lead are coprecipitated quantitatively ( 95%) with aluminum hydroxide at pH 7 with low RSD values of around 2-3 %. Detection limits (3) were 6 ng ml-1 for Cd, 3 ng ml-1 for Cu and 16 ng ml-1 for Pb. The method proposed was validated by the analysis of CRM-SW 312205 seawater standard reference material and spiked mineral water and seawater samples. The obtained results showed that this method is applicable to analyze the water samples containing trace amount of Cu, Cd and Pb.
Açıklama
Tez (Yüksek Lisans) -- İstanbul Teknik Üniversitesi, Fen Bilimleri Enstitüsü, 2005
Thesis (M.Sc.) -- İstanbul Technical University, Institute of Science and Technology, 2005
Thesis (M.Sc.) -- İstanbul Technical University, Institute of Science and Technology, 2005
Konusu
Birlikte çöktürme, aluminyum hidroksit, deniz suyu, mineral su, Cu, Cd, Pb, alevli atomik absorpsiyon spektrometri, coprecipitation, aluminum hydroxide, seawater, mineral water, Cu, Cd, Pb, FAAS
