Yazar "Yalcin, Mustafa Gurhan" seçeneğine göre listele

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    ECONOMIC AND ENVIRONMENTAL EFFECTS OF HISTORICAL MINING ENTERPRISES IN GUMUSLER VILLAGE AND CAMARDI TOWNS REGION (NIGDE, TURKEY)
    (STEF92 TECHNOLOGY LTD, 2016) Tumuklu, Ali; Yalcin, Mustafa Gurhan
    Anatolia and in particular Nigde, has an important place in terms of mining history. The inscription belonging to the late Hittite period is the world's first written mining license, and it is written on the rocks located in the Ulukisla area. Nigde stands out by mining operations of Sn, Au, Cu and Ag in ancient period, and Sb, Hg, Fe, Pb and Zn in the near term (the 18th century and later). Today, slags and rusts remained in these mines take attention with two aspects. The first one is economic and the second one is environmental. These slags and rusts have no economic value when they were produced, but now they have economic value. For example, slags in the Camardi region have the tenor of 3,25% Cu, %5,5-6 Pb, %2,5-3 Zn, 0,8-1,5 ppm Au and 250 ppm Ag. These values are economic in current conditions of mining technology. In addition, the environmental issues of slags of these areas are addressed. As content of Gumusler slag is pretty high to be taken in consideration. Given that the toxic elements found in these slags are most likely to be in a free state, these areas are considered to be possible sources of contamination of the living. Therefore, in order to prevent environmental issues, a careful investigation on the old mining slugs in Gumusler and Maden areas has to be taken urgently.
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    Geomedical, ecological risk, and statistical assessment of hazardous elements in shore sediments of the Iskenderun Gulf, Eastern Mediterranean, Turkey
    (Springer, 2019) Yalcin, Mustafa Gurhan; Coskun, Bilgen; Nyamsari, Daniel G.; Yalcin, Fusun
    This study was carried out on the Iskenderun Gulf in Turkey to assess the hazardous element pollution level of sediments and potential risk level which they pose to the environment. Their hazardous element content was inspected using five statistical parameters, mineralogical studies; and six risk indices. Similarity of sample content is divided into five groups C1-C5. C1 had anomalous concentrations of Cr, Zn, and V; C2 had anomalous concentrations Mn, Zn, Cu, and Pb; C3 showed very high Cr concentration; C4 indicated anomalous Cr and V concentrations; and no anomaly is observed for C5 samples. Ni and Mn show a distinct disparity and Cr shows a wide disparity in variance to the other elements. Principal component analysis reveals most of Cu, Pb, Zn, and Cd, and majority of Mn and Fe are thought to have come from a geogenic source. Most of Ni, Co, and Mg along with majority of Sr, As, and Al are thought to have come from both geogenic and anthropogenic sources, while most of V and majority of Cr are thought to arise from anthropogenic sources. The Gulf thought to possess very high concentrations of Cr, Ni, and Co in most samples. No significant ecological risk is posed by samples BC-(35, 43, and 51), though anomalous concentrations are observed in the samples. On the other hand, samples BC-(16, 19-21, 25-28, 30, 37 and 38) pose moderate ecological risk, yet they possess no anomalous concentration. BC-(9, 10, 17, 18, 24, 32, 33, 53, 54, and 60) were observed to be of significant ecological risk. Cr is enriched in most of these samples with contaminated Geoaccumulation levels except in BC-(32 and 33) that are enriched with contaminated Geoaccumulation levels as BC 32 (Pb, Zn, Cd, Cu, and Mn) and BC 33 (Mn). Overall, pollution load index indicated that PLI > 1 for 34 samples are polluted with BC-32 (PLI = 6.98) being the most polluted sample, located around the industrial zone, and followed by samples 53, 54, 33, 24, and 60 with PLI (1.94-2.5).
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    Heavy mineral distribution as related to environmental conditions for modern beach sediments from the Susanoglu (Atakent, Mersin, Turkey)
    (SPRINGER, 2009) Yalcin, Mustafa Gurhan
    Geochemical works were conducted on anthropogenically effective lithologic unit exposing along the Susanoglu coast in Mersin, Turkey. For this purpose, beach sand sediments from 33 stations were collected and heavy metal and oxide concentrations were analyzed. To determine the source of heavy metals (natural and anthropogenic), simple and multivariate statistical analyses were applied. According to factor analysis, three factors were determined. The first factor consists of SiO2, Al2O3, Na2O, K2O, TiO2, Cr, Ni, Cu and Mo and total variance is explained with 27.502% and expressed as "natural process factor". These elements (Cr, Ni, Cu, Mo) are closely associated with geogenic materials and came from same sources of ultrabasic rocks (ophiolite). The second factor consists of CaO, MgO, TiO2, MnO, Ni, Pb, Zn and W and total variance is explained with 21.505% and expressed as "anthropogenic factor". These elements (Pb, Zn, Cd, V, W) are anthropogenic and are mainly due to the effluent or industrial input/activities and came from different sources of pollution in the study area. The third factor consists of Pb, Cd and Sb and total variance is explained with 9.748% and expressed as "intermediate factor". The factor analysis and the cluster analysis are in support of each other. Cr, Ni, Co, Cd, Hg and Mo concentrations are greater than Turkish acceptable values and they show toxic effect. Al, Cu, Pb, Cd and Mo concentrations in beach sand deposits in the Susanoglu coast are found as 1.44, 1.26, 1.21, 1.02 and 1.04 mg/kg and higher than those in KA +/- zkalesi beach sands. However, all other heavy metal contents are determined in low concentrations.