A. Gürol

EDXRF analysis of murgul pyrite ore concentrates

Abstract Murgul pyrite ore from the city of Artvin, Turkey was analysed by means of X-ray fluorescence (XRF) by using the standard addition method. The XRF method with an 241 Am annular source of excitation and a Si(Li) detector is employed The results give useful knowledge about the concentration levels of Fe, Cu, As, Sn, Sb, In and I in Murgul pyrite ore.

Elemental composition of cement Kiln dust, raw material and cement from a coal-fired cement factory using energy dispersive X-ray fluorescence spectroscopy

Abstract Cement Kiln dust raw material, and cement samples collected from the coal-fired cement factory of Askale at Erzurum in Turkey were characterized with the standard addition method using energy-dispersive X-ray fluorescence techniques. An annular 100 mCi 241 Am radioactive source emitting 59.5 keV photon and annular 50 mCi 55 Fe radioactive source emitting 5.96 keV photon were used for excitation. Samples are prepared from powder sifted by a 300-mesh sieve. The characteristic K X-rays of the different elements were detected with a Si (Li) detector. The results are presented and discussed in this paper.

Determination of P, S, Cl, K, and Ca in Human Urinary Stones by EDXRF

Abstract Human urinary stones, taken from recurrent urinary stone ailing patients, were investigated with an energy dispersive x‐ray fluorescence (EDXRF) spectrometer. The concentrations of major elements in these stones, e.g., P, S, Cl, K, and Ca, were determined by using comparison‐standard methods. This work is a contribution for doctors, to help minimize laboratory investigations and expenses, as well as the discomfort of patients, by speeding up the research of medical etiologic problems of patients with urinary stone disease.

L-subshell and total L-shell photoeffect cross-sections measurements for Pb, Au, W, and Ta at

Abstract L-subshell and total L-shell photoeffect cross-sections were experimentally determined at 59.5 keV using energy dispersive X-ray fluorescence spectrometry for Pb, Au, W, and Ta. The obtained experimental results were compared with theoretical and available experimental values.

Determination of Ore Concentrates by Energy Dispersive X-Ray Fluorescence Spectrometry

Abstract EDXRF analysis has broad applications in the quantitative analysis of major and minor elements in geological, geochemical, and environmental studies, including the fields of sedimentology, stratigrapy, geochemistry, and mineral exploration. Evaluation of its potential for the analysis of major and minor elements in Bozalt and Dedemaksut ores were performed. Physical basis of used standard addition method, experimental set-up, the procedure of sample preparation and the results of analysis were presented. The correlation coefficients for each of elements analyzed (r greater than 0.986) were achieved.

Heavy metal accumulation in some aquatic insects (Coleoptera: Hydrophilidae) and tissues of Chondrostoma regium (Heckel, 1843) relevant to their concentration in water and sediments from Karasu River, Erzurum, Turkey

The objectives of this research were to determine and compare the heavy element concentrations in two study areas in Erzurum, Turkey (Aşkale and Dumlu sites). Assessment of some heavy elements in sediment, water, fish (Chondrostoma regium) tissues, and some aquatic insects (Coleoptera: Hydrophilidae) were carried out in June to August 2014. Heavy element levels in aquatic insect samples and their associated water and sediment were analyzed by energy dispersive X-ray fluorescence (EDXRF) spectrometer. Fish tissues, from the same habitat, were measured by inductively coupled plasma mass spectrometry (ICP-MS). Eleven elements (Al, Cr, Mn, Fe, Ni, Cu, Zn, As, Cd, Hg, Pb) were measured in fish tissues, and 14 elements (Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, As, Se, Sr, Br, Pb) were measured in insects. According to the results, it can be said that insects were contaminated by water and sediment, thus accumulated higher concentration of some elements than their environment. The fish, which was caught from Aşkale station, accumulates significantly higher level of heavy metals than Dumlu station’s fish. The results were compared with national and international standards. The values of some heavy elements were found at higher concentration than the acceptable limits. The possible consequences of these results are briefly discussed from the point of potential hazards to ecology and human health. Element concentrations in fish tissue are below the limits, which are proposed by Turkish Food Codex, FAO/WHO, and EC, and safe for human consumption in the edible parts of fish species in the regions.

The qualitative and quantitative analysis of Sarıkamış ore by energy dispersive X-ray fluorescence

The aim of this study was to determine the concentration of trace elements present in Sarıkamış ore by the standard addition method. The elements determined were Ca, Ti, Fe, Sr, Ba. The equipment used for this study was a Si(Li)-detector, a multichannel analyzer and 55Fe and 241Am radioisotope sources. The physical basis of the analytical method used, the procedure of sample preparation and the results are presented.

Variation of Compton Profiles of the CO2 at different pressures

In this study, it has been measured the Compton Profile of the CO2 gas at different pressures by using a Compton Profile Spectrometer with an annular Am-241 radioactive source and a HPGe detector. CO2 gas molecules sealed in a gas chamber at different pressures. The gas pressure had been set by using an analog manometer before the measurements. The γ-rays emitted from source was incident into the gas from a hostaphan window. The detector recorded the scattered photons from molecules. To obtain correct Compton Profile values, the raw data were corrected for some effects; i.e. scattering from the gas chamber’s walls, absorption effects of windows on gas chamber and detector, and multiple scattering corrections. A Matlab Code has been used for all calculations. The results clearly demonstrate the valance electronic structure of the materials is highly depending on the pressure. According to our experimental results, when the pressure in the gas chamber increase the Compton Profiles of valance electrons chang...

The investigation of heavy element accumulation in some Hydrophilidae (Coleoptera) species

First of all, this study aimed to find out the measures of some heavy elements (Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, As, Se, Br, Sr, Pb) as heavy element pollution in Erzurum Province, and secondly to observe whether some hydrophilidae (Coleoptera) species can be used as a biomonitor. Insect samples were collected from five different localities of Erzurum in June, July, and August 2014. Heavy element levels in sediment, water, and insect samples were analyzed by energy-dispersive X-ray fluorescence (EDXRF) spectrometer device. According to the results of analysis derived through EDXRF spectrometry, heavy element concentrations display differences between stations and also species. The results pointed out that the insects were contaminated by the sediment and water; therefore, some hydrophilidae species accumulate higher concentration of elements than their environment. Results for levels in water were compared to national water quality guidelines. The values of some heavy elements found at higher concentration than acceptable limits.