İKÜ Güncesi Fen ve Mühendislik Bilimleri / Journal of İstanbul Kültür University Science and Engineering

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Browsing İKÜ Güncesi Fen ve Mühendislik Bilimleri / Journal of İstanbul Kültür University Science and Engineering by Author "AKYÜZ, ZEKİ TANIL"

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    PublicationOpen Access
    An Investigation of Bursa-Uludağ Wolfram Ore By NAA and EDXRF Methods
    (İstanbul Kültür Üniversitesi Yayınları, 2004-01) AKYÜZ, ZEKİ TANIL
    In this study 4 wolfram ore samples obtained from Bursa-Uludağ wolfram deposit, together with concentrated scheelite sample , that was enriched in Scheelite mineral (CaWo), obtained from the ore samples were analysed for their majör and majör and minör constituents by radioisotepe excited energy dispersive X-ray fluorescence (EDXRF) and neutron activation analysis (NAA) techniques. The concentrations of Na, Mg, Al, Si,P, S, Ca, Sc, Ti, Cr, Mn, Co, Fe, Cu, Ni, Zn, Ga, As, Se, Rb, Sr, Y, Zr, Mo, Ru, Ba, La, Ce, Nd, Eu, Ag, Sb, Cs, Yb, Hf, Ta, W, Th, U elements have been determined.
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    PublicationOpen Access
    Natural Radioactivity and EDXRF Analysis of Ashes from Coal Power Plants of Turkey
    (İstanbul Kültür Üniversitesi Yayınları, 2004-01) Varinlioğlu, Ahmet; Köse, Abdullah; AKYÜZ, SEVİM; AKYÜZ, ZEKİ TANIL
    Natural radioactivity and the chemical composition of ten ash samples collected from six coal power plants of Turkey have been analysed. Gamma-isotopic analysis indicated that all the samples contain Ra•226, U238 and Th-232,But, K-40 and Cs-134 have not been found in the samples in the detection limits. On the other hand, Cs-137 was found only in the ash samples taken from Yatağan coal power plant (603± 15 Bq/kg). Mineralogical analysis of the samples showed that they contained significant amounts or clays and glass. Less amounts of quartz, feldspar and magnetite minerals exist in the samples. Major and minor element analyses of the ash samples were done by X•Ray Fluorescence, XRF/EDXRF, technique. The natural radioactivity of an ash sample taken from the electro-filter of the Ambarlı fuel oil power plant was also anaysed for comparison and iit was found that sample contained the least amount of U-238,Th-232 and Ra-226