Yazar "Ozcan, H." seçeneğine göre listele

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    Assessment of relationship between geochemical fractions of barium in soil of cherry orchards and plant barium uptake and determination by inductively coupled plasma optical emission spectrometry
    (Atomic Spectroscopy Press Limited, 2019) Sungur, A.; Gur, E.; Everest, T.; Soylak, M.; Ozcan, H.
    This study was conducted to investigate the relationship of geochemical fractions of Ba in soils of cherry orchards and in plant Ba uptake. The levels of Ba in the soil samples were determined after sequential extraction procedure and analysis by inductively coupled plasma optical emission spectrometry (ICP-OES). At the same time, the levels of Ba in cherry leaf samples were determined after a wet digestion procedure by ICP-OES. Soil total Ba concentrations (mean 108.9 µg g-1) were found within normal ranges specified for agricultural soils. The Ba concentration in the cherry leaf samples was found in the range of 9.1 µg g-1 to 20.6 µg g-1. Sequential extraction revealed that Ba existed in highly mobile phases (42%), which are attributed to anthropogenic sources as well as to decomposition of soil parent material. The experimental data were subjected to hierarchical cluster analysis to assess the relationship between the Ba concentration of each fraction and the leaf Ba contents. A significant correlation was observed between the leaf Ba concentrations and the acid soluble fraction. © 2019, Perkin - Elmer Corp. All rights reserved.
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    Assessment of Relationship Between Geochemical Fractions of Barium in Soil of Cherry Orchards and Plant Barium Uptake and Determination by Inductively Coupled Plasma Optical Emission Spectrometry
    (Atomic Spectroscopy Press Ltd, 2019) Sungur, A.; Gur, E.; Everest, T.; Soylak, M.; Ozcan, H.
    This study was conducted to investigate the relationship of geochemical fractions of Ba in soils of cherry orchards and in plant Ba uptake. The levels of Ba in the soil samples were determined after sequential extraction procedure and analysis by inductively coupled plasma optical emission spectrometry (ICP-OES). At the same time, the levels of Ba in cherry leaf samples were determined after a wet digestion procedure by ICP-OES. Soil total Ba concentrations (mean 108.9 mu g g(-1)) were found within normal ranges specified for agricultural soils. The Ba concentration in the cherry leaf samples was found in the range of 9.1 mu g g(-1) to 20.6 mu g g(-1). Sequential extraction revealed that Ba existed in highly mobile phases (42%), which are attributed to anthropogenic sources as well as to decomposition of soil parent material. The experimental data were subjected to hierarchical cluster analysis to assess the relationship between the Ba concentration of each fraction and the leaf Ba contents. A significant correlation was observed between the leaf Ba concentrations and the acid soluble fraction.
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    Determination and evaluation of some physicochernical parameters in the Dardanelles (Canakkale Strait, Turkey) using multiple probe system and geographic information system
    (I W A Publishing, 2006) Turkoglu, M.; Baba, A.; Ozcan, H.
    The Dardanelles (Canakkale Strait) is a water passage connecting the Aegean Sea and Sea of Marmara. The average depth of the Dardanelles is 60 m; the deepest part reaches more than 100 m. Environmental parameters such as temperature, pH, salinity, dissolved oxygen and total dissolved solids were measured at different depths in the Dardanelles. The sampling period was between December 2002 and March 2003. All the data was measured by a YSI 6600 Model Multiple Probe System. Also, a Geographic Information System was used to create a tabular and spatial database, with the aim of integrating the physicochemical properties in the Dardanelles. Temperature and salinity profiles by the Geographic Information System showed that there was stratification and formation of two different water masses in the Dardanelles. The measurements showed that lower layer waters (> 20 m) are saltier than upper layer waters of the Dardanelles. Therefore, the lower layer waters also hold higher values for total dissolved solids. Although the temperature and salinity characteristics of the Dardanelles are specific due to its topographic structure and some fresh water discharges, the stratification in the Dardanelles is generally similar to other parts of the Turkish Strait System (Bosphorus and Sea of Marmara) because of large salinity differences between the Aegean and Black Sea.
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    Heavy Metals Analyses in the Soil Samples through DTPA and BCR Sequential Extraction Procedures
    (Univ Namik Kemal, 2013) Sungur, A.; Ozcan, H.
    In this study, the different fractions of Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb and Zn in the soil samples have been determined by means of BCR sequential extraction method which was developed by the European Bureau of Reference. The amounts of heavy metals which are taken by plants have been determined through DTPA (diethylene triamine pentaacetic acid) extraction method and the relationship between sequential extraction method and amounts of heavy metal taken by plants have been statistically analyzed. Flame atomic absorption spectrometry (FAAS) has been employed to find out heavy metals extracted through BCR sequential extraction and DTPA method. In this study, it has been statistically found out that there is a strong relationship between heavy metals (Cd, Cr, Cu, Fe, Mn, Pb and Zn) except for Ni and Co which can be extracted through DTPA and F1 fraction (exchangeable and carbonate-bound). It has also been seen that this relationship can provide significant information while interpreting heavy metal behaviors and available amounts. Besides, it has been observed that there is a statistical relationship between metal amount bound in F2 (Fe-Mn oxides bound) and F3 (organic matter and sulphure bound) fractions and metal amounts extractable through DTPA. It has also been seen that these relationships can provide information for heavy metals about their bioavailability in the long term.
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    Investigation of discharge of fresh water in the Canakkale strait (Dardanelles Turkey)
    (Springer, 2007) Baba, A.; Deniz, O.; Turkoglu, M.; Ozcan, H.
    The Canakkale Strait (Dardanelles) is a water passage connecting the Aegean Sea and the Marmara Sea. Its NE/SW trend is interrupted by a north-south bend between Eceabat and Canakkale. The width of the Strait varies from 1.35 to 7.73 km, the narrowest part located between Canakkale and Kilitbahir. The average depth of the Strait is approximately 60 m; the deepest part reaches more than 100 m. The aim of this study is to determine the locations of fresh water discharge into the Canakkale Strait. For this purpose, 52 sample points were selected in the study area. The temperature, pH and salinity were measured at different depths of water in the Canakkale Strait (1, 5, 10, 20 and 30 m). A Geographic Information System (GIS) was used to create a tabular and spatial database, with the aim of integrating the physical properties in the Canakkale Strait. The results of this study show that discharge of fresh water is seen in four locations on the southeastern coast between Dardanos and Canakkale, and that the Aegean Sea and Marmara Sea water are mixing between Canakkale and Kilitbahir. In the future, these sources of fresh water may be needed as population increases in the region. However, water pollution in the Canakkale Strait may limit the use of this fresh water.
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    LUMINESCENCE DATING OF PREHISTORIC SITE OF SMINTHEION (GULPINAR) IN NW TURKEY
    (Univ Agean, Dept Mediterranean Stud, 2010) Kiyak, N. G.; Takaoglu, T.; Erginal, A. E.; Ozcan, H.
    This study aims to place the prehistoric settlement of Smintheion in northwestern Turkey in its temporal setting on the basis of the dating of the quartz from pottery and sediments collected from the site employing Optically Stimulated Luminescence and Thermoluminescence techniques. The site belongs to the problematic Middle Chalcolithic period in western Anatolia. This period represents a cultural upheaval in western Anatolia as it has a completely different material culture when compared to that of the preceding Early Chalcolithic period. The pottery and sediment samples were collected from two different locations of the Middle Chalcolithic settlement at Smintheion for dating study. The fact that this examined settlement is represented by a single cultural level provides an opportunity to obtain secure and reliable dates for the settlement. Results of this study show that the site can be dated to a period between 4800 and 4500 B.C.
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    Luminescence dating of prehistoric site of smintheion (gulpinar) in nw turkey
    (Henan University, 2010) Kiyak, N.G.; Takao?lu, T.; Erginal, A.E.; Ozcan, H.
    This study aims to place the prehistoric settlement of Smintheion in northwestern Turkey in its temporal setting on the basis of the dating of the quartz from pottery and sediments collected from the site employing Optically Stimulated Luminescence and Thermoluminescence techniques. The site belongs to the problematic Middle Chalcolithic period in western Anatolia. This period represents a cultural upheaval in western Anatolia as it has a completely different material culture when compared to that of the preceding Early Chalcolithic period. The pottery and sediment samples were collected from two different locations of the Middle Chalcolithic settlement at Smintheion for dating study. The fact that this examined settlement is represented by a single cultural level provides an opportunity to obtain secure and reliable dates for the settlement. Results of this study show that the site can be dated to a period between 4800 and 4500 B.C. © 2010 MAA. Printed in Greece. All rights reserved.
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    Spatial and Temporal Variation of Available Zinc of Troy (Kumkale) Soils
    (Univ Namik Kemal, 2012) Sungur, A.; Everest, T.; Ozcan, H.
    In this study spatial and temporal variation of available zinc of Troy region (Kumkale plain) which has important potential in Canakkale was studied. In the study, 153 soil samples from 51 distinctive surface (0-25 cm) was taken in three different sowing periods (December - April - July). The amount of available zinc has shown temporal variation because of the climatic factors and it has shown spatial variation due to the soil properties. While available zinc was over the adequate limits in December, in April and July at some sample points available zinc was under the adequate limits. Hence, these distribution maps produced by geographical information system (GIS).