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    Assessment of Toxic, Essential, and Other Metal Levels by ICP-MS in Lake Eymir and Mogan in Ankara, Turkey: An Environmental Application
    (Atomic Spectroscopy Press Ltd, 2018) Yuksel, Bayram; Arica, Enes
    The goal of this study was to develop and validate a sensitive ICP-MS method for the determination of some toxic metals (Al, As, fig, Pb, Cd. Ni. Cr, and Sb), along with essential and other elements (Fe, Cu, Zn, Mn, Se, Co, and Ti) in water samples collected from 20 sites of Lake Eymir and lake Mogan in Ankara, Turkey. The mean metal concentrations, except for As, in the water samples of the two lakes were found at safe levels. The As levels in Lake Mogan (12.15 +/- 0.41 mu g/L) and Lake Eymir (11.49 +/- 0.66 mu g/L) were higher than the permissible limits recommended for drinking water of 10.0 mu g L-1 As. The significance of this paper fundamentally addresses the assessment of general signal optimization for multi-element analysis and reducing interferences during validation and optimization of this ICP-MS method. Good linearity with a correlation coefficient between 0.9911 and 1.000 was obtained, respectively. Imprecision was measured as the coefficient of variation (CV), which ranged between 1.16% and 4.79%. Recovery of the method was between 97.3% and 103.6% for all elements, which supports the accuracy of the method. The procedure described is relatively simple, precise, and applicable for mutine environmental metals analysis in natural water samples.
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    ICP-MS Determination of Lead Levels in Autopsy Liver Samples: An Application in Forensic Medicine
    (Atomic Spectroscopy Press Ltd, 2018) Arica, Enes; Yuksel, Bayram; Yener, Ismail; Dolak, Ibrahim; Gok, Ertugrul; Yilmaz, Eyup
    The objective of this study was to develop and validate a senstitive ICP-MS method with no gas mode for the determination of Pb levels in autospy liver samples collected from patients in Diyarbakir, Turkey. The microwave-assisted acid digestion procedure was optimized and applied to accurately weighed dry liver samples. The method showed linearity in the range of 0-100 mu g/kg with a detection and quantification limit of 0.72 mu g/kg and 2.18 mu g/kg, respectively. The calibration graph was characterized with excellent correlation coefficients (r=0.9997) for Pb determination. Certified reference material was used to validate the method in terms of accuracy, precision, and recovery. Good agreement was obtained between the certified values and the measured Pb concentrations. Percent recovery and precision for Pb was calculated at 99.5% and 4.29%, respectively. In the autopsy liver samples, the Pb levels ranged from 106.83 mu g/kg to 1932.08 mu g/kg and the mean Pb levels were found at 375.24 +/- 325.46 mu g/kg. As a result of the statistical analysis, the occupation, smoking habit, settlement, gender, and age appeared to have an effect on the Pb levels in the autopsy liver samples. The procedure described is relatively simple, precise, and applicable for routine toxicological Pb determination in human tissue.
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    Öğe
    Impacts of a Garbage Disposal Facility on the Water Quality of Cavuslu Stream in Giresun, Turkey: A Health Risk Assessment Study by a Validated ICP-MS Assay
    (Istanbul Univ Press, Fac Aquatic Sciences, 2021) Yuksel, Bayram; Ustaoglu, Fikret; Arica, Enes
    Environmental concerns have been raised because of a garbage disposal facility (GDF) constructed near Cavuslu Stream in Giresun, Turkey. This article proposes a fully validated ICP-MS technique to investigate the impacts of the GDF on the water quality of the stream and provide a human health risk estimation. Water sampling was carried out at four different stations and in tap water since the stream is the primary source of drinking water for the inhabitants of the town. Quantification of selected toxic metals (As, Pb, Cd, Hg, Sb, Al, and Ni) in conjunction with the essential and other elements (Se, Cu, Fe, Mg, Mn, Zn, and Co) was performed by the use of the previously validated ICP-MS method. Once water quality index (WQI), heavy metal pollution index (HPI), and heavy metal evaluation index (HEI) were computed, the health risk assessment was studied according to the US EPA's method. Although the stations (2, 3, 4, and tap water) showed excellent water quality, station-1, which is the closest one to the facility, was classified as poor water quality. Lifetime cancer risk (LCR) was only significant both for adults and children in station-1. In addition, low risk regarding non-carcinogenic health hazards was found for children. The results indicate that the facility decreases the water quality of this stream and is possibly responsible for LCR. In conclusion, the ecological environment and human health should be protected by further monitoring the effect of the GDF on the ecological system.