Browsing by Author "Turhan, Ş."
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Pubmed Determination of potentially toxic metals and natural radionuclides in airborne pollens produced different urban environments in Turkey and health risk assessment(2024) Turhan, Ş.; Çeter, T.; Altuner, E.M.; Karabıcak, S.; Çeter, S.; Bıyıklıoğlu, O.; Aktaş, Ş.; Kurnaz, A.Air pollutants are associated with potentially toxic metals (PTMs) and natural and/or artificial radionuclides, which can pose a major threat to human and environmental health. Pollens can be utilized as a bioindicator to determine the level of air pollution in urban areas. In this study, the concentrations of PTMs and natural radionuclides in 35 airborne pollen samples of 22 species belonging to Pinaceae, Cupressaceae, Araucariaceae, Betulaceae, Salicaceae, and Oleaceae families grown in different urban areas in Turkey were determined using an energy-dispersive X-ray fluorescence spectrometry. For the first time, non-carcinogenic and radiologic health risk assessments for adults were done, estimating hazard index (HI) and annual effective dose (AED), respectively. The concentrations of Fe, Mn, Zn, Ti, Sr, Cu, Ni, Co, Cr, V and Pb analyzed in airborne pollen samples varied from 52.1 to 3078.0, 26.1 to 159.6, 15.6 to 199.7, 9.1 to 282.2, 1.0 to 128.4, 5.0 to 40.1, 5.4 to 23.6,Pubmed Determination of radon concentrations and physicochemical parameters of non-alcoholic carbonated beverages consumed in Türkiye and assessment of radiological health risk(2024) Turhan, Ş.; Sultan, D.A O; Altuner, E. M; Kurnaz, A.; Bakır, T. K; Altamemi, R. A AThe strategy for controlling the existence of radionuclides in drinking water depends upon an individual dose criterion (IDC) of 0.1 mSv/y, which represents a very low level of risk that is not expected to cause any identified adverse health effects. Radon gas, considered a carcinogenic radionuclide, can dissolve and accumulate in drinking water. Non-alcoholic carbonated beverages (NACBs), which mainly contain drinking water, phosphoric acid, citric acid, caffeine, and sugar, represent one of the most consumed groups worldwide and in Türkiye. In this study, the radon activity concentration and some physicochemical characteristics of 45 NACB samples from 24 most preferred commercial brands in Türkiye were determined to assess the radiological health risk associated with the ingestion of these samples. Radon activity concentrations measured in NACB samples using the AlphaGUARD radon analyzer ranged from 22.8 ± 0.7 to 54.9 ± 1.7 mBq/L. The pH, conductivity, total dissolved solids, and brix values in NACB samples ranged from 2.31 to 7.29, 401 to 3281 μSv/cm, 355 to 2453 mg/L, and 0.10 to 12.95%, respectively. Total (ingestion and inhalation) annual effective doses and the corresponding excess lifetime cancer risks estimated for adults to assess the radiological health risk are significantly below the IDC and advised safety limit (10), respectively.Pubmed Evaluation of radiological health risk caused by the use of fly ash in cement and concrete production and its storage(2024) Turhan, Ş.; Jamasali, Yusof-denAs a result of firing pulverized coal in thermal power plants, enormous amounts of fly ash (FA) are produced as industrial waste. The release into the atmosphere and storage of this industrial waste remains one of the major environmental problems that threaten human health by contributing to air, water, and soil pollution. The recovery and reuse of FA in the construction industry is the only economic solution to the existing problem. In this study, the potential radiological risk caused by the usage of FA in concrete and cement production as a main component and its storage in landfill sites was evaluated for people and works by estimating radiological parameters (activity concentration and alpha index, annual effective doses, and the corresponding excess lifetime cancer risks) based on activity concentrations of terrestrial radionuclides in FA. Also, the radiological risk to the workers working in the FA landfill site was evaluated using the Residual Radioactivity Onsite 7.2 code. The average activity concentrations of terrestrial radionuclides in FA samples from the Tunçbilek lignite coal-fired thermal power plant at Kütahya province of Turkey were measured as 417, 156 and 454 Bq kg for Ra, Th and K, respectively. When using up to 35% by mass of FA in cement and concrete, the average values of the radiological parameters revealed that they were within the recommended safety limits. However, code estimations showed that a regular worker in FA storage would be exposed to a total effective dose rate greater than 3 mSv y.Pubmed Evaluation of radiological health risk due to ingestion and inhalation of radon in commercial packaged fruit juices consumed in Turkey(2023) Jamasali, Y.D.; Turhan, Ş.; Bakır, T.K.; Altuner, E.M.; Duran, C.; Hançerlioğulları, A.; Kurnaz, A.Fruit juices (FJs) are among the most popular beverages frequently preferred by consumers, believing FJs contain the nutritional values, minerals, phytochemicals, vitamins, and antioxidants necessary for a healthy life. However, FJs may contain natural radionuclides such as radon (Rn), which originates from the fruit and water utilized in their production, at levels that may pose a health risk to people. Inhalation and ingestion of Rn gas increases the risk of lung and stomach cancer. In this study, commercially packaged FJs from the seventeen most popular brands consumed in Turkey were analyzed for physicochemical properties and Rn activity concentrations to evaluate the radiological health risk. The values of pH, brix and Rn activity concentrations in FJ samples varied from 2.68 to 4.28, 2.50 to 14.30%, 9.6 ± 1.1 to 25.2 ± 2.5 mBq/L, respectively. The radiological health risk caused by internal exposure was evaluated for children and adults by estimating the ingestion and inhalation annual effective dose. The average values of the total annual effective dose for children and adults were found as 0.039 µSv and 0.056 µSv, respectively, which are much lower than the recommended dose of 100 µSv for drinking water.Scopus Heavy metal analysis of wild edible mushrooms grown in Türkiye and assessment of possible carcinogenic and non-carcinogenic risk(Academic Press Inc., 2024) Turhan, Ş.; Akata, I.; Kumru, E.; Altuner, E.M.In this study, heavy metals (HM) composition of in seventy-three wild edible mushroom (WEM) species collected from unpolluted areas in fourteen provinces of Türkiye was determined by X-ray fluorescence spectrometry. The concentrations of Cr, Mn, Fe, Co, Ni, Cu, Zn, Zr, Cd, Hg, Pb and As analyzed in WEM species varied from 1.1 to 76.3, 13.8–822.7, 9.5–8867.0, < 3.0–31.8, 5.1–44.4, 3.8–380.2, 17.9–912.0, < 0.5–19.5, < 0.8–4.9, < 0.9–15.6, < 0.8–31.9 and < 0.5–257.4 mg/kg dry weight, respectively. The concentrations of Cd and Pb were higher than the limits recommended by the Turkish Food Codex for cultivated mushrooms. The potential carcinogenic and non-carcinogenic risks caused by the ingestion of WEM species containing HMs were assessed by estimating the hazard and total cancer risk index. Non-carcinogenic risk assessment reveals no risk for consumption of the studied WEM species for adult consumers, except for two WEM species. On the other hand, 26 % of the values of the total cancer risk index assessed for Cr, As, Pb, and Ni in WEM species exceed the acceptable limit (≥ 10−4).