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    Analysis the Metal Composition of Fish Samples Collected From Karacaören II Dam Lake
    (2024) Köksal, Oğuz Kağan; Apaydın, Gökhan; Cengiz, Erhan; Sirin, Murat; Baltaş, Hasan; Çakmak, Eyüp; Tirasoglu, Engin
    The objective of this study was to analyze the metal content in the organs of Oncorhynchus mykiss, commonly known as rainbow trout, at 12 different locations within the cages located in Karacaören II Dam Lake. The metal contents in fish samples were analyzed using a PANalytical Epsilon5 energy dispersive X-ray fluorescence (EDXRF) spectrometer. We will analyze the findings by displaying the fluctuating metal concentrations in various internal organs over the seasons.
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    Öğe
    Determination of L-shell fluorescence parameters of thallium in thallium compounds
    (Taylor & Francis Inc, 2021) Cengiz, Erhan; Tirasoglu, Engin; Apaydin, Gokhan; Koksal, Oguz Kagan
    The L-i (i = l, alpha, beta, and gamma) production cross-sections, L-shell average fluorescence yields, and Coster-Kronig vacancy transfer factors for L-3 subshell X-rays of thallium in some thallium compounds were determined using Energy Dispersive X-ray Fluorescence spectrometer. The compounds were excited by 59.5 keV gamma-rays from an Americium-241 annular radioactive source, and the L X-rays emitted by the compounds were counted using an ultra-low energy germanium detector with a resolution of 150 eV at 5.9 keV. The production cross-sections, average fluorescence yields, and Coster-Kronig vacancy transfer factors of thallium in these compounds were compared with theoretical calculations and available experimental values of the pure thallium.
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    Öğe
    Exploration of Seasonal Metal Pollution in Karacaören II Dam Lake Sediment Samples using X-ray Fluorescence Method
    (2023) Apaydın, Gökhan; Köksal, Oğuz Kağan; Cengiz, Erhan; Sirin, Murat; Baltaş, Hasan; Tirasoglu, Engin
    In this study, the seasonal metal pollution of sediment samples taken from twelve distinct notes of the Karacaören II Dam Lake was examined. The quantity of metal in soil samples was determined using energy dispersive X-ray fluorescence spectroscopy. The geoaccumulation index and enrichment factor expressions were created using the metal concentrations found in the sediments. Seasonal values at the local, state, and international levels were compared to the findings. The ratios of the elements copper, zinc, lead, arsenic, nickel, chromium, and mercury, measured in parts per million (ppm), were found to be 42-96, 53-78, 11-14, 4-7, 233-244, and 611-711, respectively. There is also discussion of the sediments' elemental composition and degree of pollution. In contrast, it was found that the Urbach energy increased from 0.246 eV to 0.630 eV with increasing levels of V2O5. These synthetic glasses' densities and molar volumes were also investigated and discussed.