Yazar "Fidan, Celal" seçeneğine göre listele

Listeleniyor 1 - 3 / 3
  • Küçük Resim
    Öğe
    Comparison of three sequential extraction methods for the determination of iron, manganese, and thallium in asphaltite samples
    (Atomic Spectroscopy Press Limited, 2020) Bilgin, Öykü; Fidan, Celal; Aydın, Işıl; Aydın, Fırat
    Asphaltite, which is based on petroleum, contains many elements that exist in different forms. In this study, the BCR sequential extraction (BCRSE), Tessier sequential extraction (TSE) and Stover sequential extraction (SSE) procedures were applied for the determination of Fe, Mn and Tl in different forms (exchangeable, carbonates, bound to organic and sulfide, and residual content) in the structure of asphaltite. The statistical relations between the metal values of the three different methods were determined and recommendations are given for the enrichment of these economically valuable elements from asphaltite samples. The most abundant form of Fe (%), Mn (mg kg-1) and Tl (mg kg-1) follows the order: reducible (2.28), residual (75.85) and residual (81.99) with BCRSE method; carbonates (2.46), residual (79.21) and residual (79.75) with TSE method; carbonates (2.36), residual (67.34) and residual (46.93) with SSE method. The Fe, Mn and Tl speciation scheme gives quantitative knowledge of toxicity, bioavailability, mobility, leachability and bioaccumulation, etc., for asphaltite. A comparison of the three methods shows that the TSE method is shorter and more economical, while SSE gives more detailed information about the chemical structure of the substances, and the BCRSE has reducible (as oxides) fractions for the metals. This is the first time that a comparison of the three extraction methods was carried out on asphaltites and reported. The certified reference material (CRM) NIST-1633b Coal Fly Ash was used to verify the accuracy of the method, and whether the results are in good agreement with the certified values.
  • [ X ]
    Öğe
    Determination of Selenium and Nickel in Asphaltite from Milli (Sirnak) Deposit in SE Anatolia of Turkey
    (Iop Publishing Ltd, 2017) Aydin, Isil; Fidan, Celal; Kavak, Orhan; Erek, Figen; Aydin, Firat
    Asphaltite is one of the naturally occurring black, solid bitumen's, which are soluble at heating in carbon disulphide band fuse. Asphaltite is also a solidified hydro carbon compound derived from petroleum [1]. According to the World Energy Council, Turkish National Committee (1998), the total reserve of the asphaltic substances that are found in south eastern Turkey is about 82 million tons, with Silopi and Sirnak reserves to get her comprising the major part of the Asphaltite deposits. Selenium and Nickel are very important elements both environmental and health. Selenium plays an important role in the formation of the enzyme antioxidant effect in the cell. The need for Selenium increases in situations such as pregnancy, menopause, grow than development, air pollution. Nickel is used for preventing iron-poor blood, increasing iron absorption, and treating weak bones. In this study, asphaltites were taken from Milli vein from Sirnak deposit in SE Anatolia of Turkey. A total of 6.500.000 tons of Asphaltite reserves have been identified as asphaltites in Milli (Sirnak). The sample preparation method was developed in Asphaltite by spectroanalytical techniques, wet acid digestion. MW-AD followed by ICP-OES were used for the determination of Selenium and Nickel in Asphaltite. Proximate analysis of Asphaltite fly ash samples was made. It also, Selenium and Nickel element analysis in Asphaltite were made.
  • Küçük Resim
    Öğe
    Şırnak asfaltit örneklerindeki inorganik bileşenlerin tayini ve SRM kullanılmasıyla validasyonu
    (2017) Fidan, Celal; Aydın, Fırat
    Sanayi ve endüstri alanında enerji kaynağı olarak önemli yer tutan kömürler ve asfalt türevi olan asfaltitler yakıldıktan sonra geriye atık olarak küllerini bırakırlar. Bu atık olan küllerin çevreye oldukça fazla zararı bulunmaktadır. Aynı zamanda bu küllerde metal oranı oldukça fazladır. Bu çalışmada, Şırnak yöresinde yeni tespit edilmiş madenlerden alınan asfaltitlerin, kül haldeki yapısıntn belirlenerek, küldeki metal tayini ve metalin buIunduğu yapının tespit edilmesi amaçlanmıştır. Bu amaçla, Şırnak ta bulunan Harbul, Milli, Avgamasya, Seridahli ve Karatepe isimli 5 ayrı maden sahasından alınan asfaltit örnekleri, kül haline getirildikten sonra Bureau Communautaire de Reference (BCR), Tessier ve Stover ardışık ekstraksiyon yöntemleri ile analiz edilmiştir. Analizler Perkin Elmer Optima 2l00-DV model ICP-OES cihazı ile yapı|mıştır. Analizlerin doğruluk kontrolü aynı analiz yöntemleri ile European Commission Reference Material Incineration Ash (Sample no: 0158) ve Polish Certifıed Reference Material Fine Fly Ash (CTA-FFA-I) isimli farklı,2 Standart Referans Madde (SRM) numunesi kullanılarak yapılmıştır. SRM numunelerinin analizleri Agilent 7700X model ICP-MS cihazı ile yapıImıştır. Yapılan analizlerin sonucunda, çevreye zararlı metallerin suda çok az çözündüğü tespit edilmiştir, bu nedenle metallerin suda çözünmeye bağlı olarak çevreye verdikleri zararların az miktarda olduğu sonucuna varılmıştır. Anahtar Kelimeler: Asfaltit külü, SRM, BCR, Tessier, Stover ekstraksiyon metodu, ICP-MS, ICP-OES.