Yazar "Sungur, A." seçeneğine göre listele

Listeleniyor 1 - 10 / 10
  • [ X ]
    Öğe
    An Investigation of Some Heavy Metals (Cr, Ni, Pb) Pollution of Karamenderes Basin Soils in canakkale
    (Univ Namik Kemal, 2013) Sumer, A.; Adiloglu, S.; Cetinkaya, O.; Adiloglu, A.; Sungur, A.; Akbulak, C.
    The aim of this research was to determine the heavy metal pollution of Karamenderes Basin soils in canakkale Province. For this purpose, soil samples were taken from 80 different areas in in basin. Extractable Cr, Ni and Pb contents of soil samples were determined. As a of the research, Pb pollution was determined in the soil samples. Whereas Cr and Ni pollution were not determined in the soil samples, presently.
  • [ X ]
    Öğe
    Assessment of Cr, Mn, Fe, Co, Ni, Cu, Zn, As, Cd, and Pb Concentrations in Gluten-free Foods From Saudi Arabia by Inductively Coupled Plasma Mass Spectrometry
    (Atomic Spectroscopy Press Ltd, 2015) Mehder, A. O.; Yilmaz, E.; Sungur, A.; Soylak, M.; Alothman, Z. A.
    The levels of arsenic, cadmium, chromium, cobalt, copper, iron, lead, manganese, nickel, and zinc in some gluten-free food samples used for celiac disease patients have been determined after microwave digestion by inductively coupled plasma mass spectrometry (ICP-MS). The concentrations were found in the range of 0.09-0.66 (As), 2.9-6.6 (Cd), 4.7-100.3 (Cr), 866-2009 (Co), 0.043-0.26 (Cu), 3.2-17.4 (Fe), 1.4-10.5 (Pb), 12.9-41.3 (Mn), 0.35-0.46 (Ni) and 0.021-0.268 (Zn) mg kg(-1). The detection limits for As, Cd, Cr, Co, Cu, Fe, Pb, Mn, Ni, and Zn were 0.33, 0.009, 0.26, 0.041, 0.17, 1.36, 0.025, 0.061, 0.042, and 0.29 mg kg(-1), respectively. The accuracy of the method was confirmed by analysis of the standard reference material SRM 1568a Rice Flour. The results were compared with related works published for gluten-free foods used around the world and it was found that the Mn and Fe levels obtained in this study were at higher levels. The highest Ni, Co, Fe, and Cr levels were in Rice Flicks. The lowest Mn, Co, Zn, As, and Cd levels were in the Rice Thins samples. A hierarchical cluster analysis of the results was performed to identify similarities between the food samples based on element component.
  • [ X ]
    Öğe
    Assessment of Cr, Mn, Fe, Co, Ni, Cu, Zn, As, Cd, and Pb concentrations in gluten-free foods from Saudi Arabia by inductively coupled plasma mass spectrometry
    (Perkin - Elmer Corp., 2015) Mehder, A.O.; Yilmaz, E.; Sungur, A.; Soylak, M.; Alothman, Z.A.
    The levels of arsenic, cadmium, chromium, cobalt, copper, iron, lead, manganese, nickel, and zinc in some glutenfree food samples used for celiac disease patients have been determined after microwave digestion by inductively coupled plasma mass spectrometry (ICP-MS). The concentrations were found in the range of 0.09-0.66 (As), 2.9-6.6 (Cd), 4.7-100.3 (Cr), 866-2009 (Co), 0.043-0.26 (Cu), 3.2-17.4 (Fe), 1.4-10.5 (Pb), 12.9-41.3 (Mn), 0.35-0.46 (Ni) and 0.021-0.268 (Zn) mg kg1. The detection limits for As, Cd, Cr, Co, Cu, Fe, Pb, Mn, Ni, and Zn were 0.33, 0.009, 0.26, 0.041, 0.17, 1.36, 0.025, 0.061, 0.042, and 0.29 mg kg-1, respectively. The accuracy of the method was confirmed by analysis of the standard reference material SRM 1568a Rice Flour. The results were compared with related works published for gluten-free foods used around the world and it was found that the Mn and Fe levels obtained in this study were at higher levels. The highest Ni, Co, Fe, and Cr levels were in Rice Flicks. The lowest Mn, Co, Zn, As, and Cd levels were in the Rice Thins samples. A hierarchical cluster analysis of the results was performed to identify similarities between the food samples based on element component. Symptoms of celiac disease are diarrhea, bloating, abdominal pain, constipation, muscular disturbances, headaches, migraines, and bone or joint pain (18). Inductively coupled plasma mass spectrometry (ICP-MS) is a powerful instrumental detection technique for trace elements in environmental samples including food samples. This technique is preferred to atomic absorption spectrometry (AAS) and inductively coupled plasma atomic emission spectrometry (ICP-AES) due to its lower detection limits for analyte elements in comparison to AAS and ICP-AES (14, 19, 20). According to our literature survey, no study has been reported on the metal content of gluten-free food samples from Saudi Arabia after microwave digestion. This pilot study is the first on this subject. In the present work, the trace element concentrations of some gluten-free foods from Saudi Arabia were determined by ICP-MS after microwave digestion. The accuracy of the method was confirmed by analysis of the standard reference material SRM 1568a Rice Flour. The hierarchical cluster analysis of the results was also investigated to identify similarities between food samples based on element components.
  • [ X ]
    Öğe
    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.
  • [ X ]
    Öğe
    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.
  • [ X ]
    Öğe
    DTPA ve BCR Ardışık Ekstraksiyon Yöntemleriyle Toprak Örneklerinde Ağır Metal Analizi
    (2013) Sungur, A.
    Bu çalışmada toprakta farklı fraksiyonlarda bulunan Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb ve Zn miktarları Avrupa Birliği Referans Komisyonu (BCRO the European Community Bureau of Reference) tarafından geliştirilen BCR ardışık ekstraksiyon yöntemiyle belirlenmiştir. Ağır metallerin bitki tarafından alınabilir miktarları ise DTPA (dietilen triamin pentaasetik asit) ekstraksiyon yöntemiyle tespit edilmiş ve ardışık ekstraksiyon ile bitkiler tarafından alınabilir metal miktarları arasındaki ilişkiler istatistiksel olarak irdelenmiştir. Toprak örneklerinde BCR ardışık ekstraksiyon ve DTPA yöntemiyle çözelti fazına geçen ağır metallerin belirlenmesinde alevli atomik absorpsiyon spektrometresi (FAAS) kullanılmıştır. Yapılan çalışmalarda DTPA ile ekstrakte edilebilir Ni ve Co dışında kalan ağır metallerin (Cd, Cr, Cu, Fe, Mn, Pb ve Zn) F1 fraksiyonu (değişebilir ve karbonatlara bağlı) ile sıkı bir şekilde ilişkili olduğu istatistiksel olarak tespit edilmiştir. Bu ilişkinin kısa vadede ağır metal davranışı ve bitki tarafından alınabilir miktarlarının yorumlanmasında önemli bilgiler sağlayabileceği belirlenmiştir. Diğer yandan F2 (FeOMn oksitlere bağlı) ve F3 (organik madde ve sülfürlere bağlı) fraksiyonlarında bağlanan metal miktarı ile DTPA ile ekstrakte edilebilir metal miktarı arasında istatistiksel ilişkiler tespit edilmiş ve bu ilişkilerin uzun vadede ağır metaller ile ilgili biyoOalınabilirliliği hakkında bilgi verebileceği düşünülmüştür
  • [ X ]
    Öğe
    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.
  • [ X ]
    Öğe
    Karamenderes havzası topraklarında bazı ağır metallerin (Cr, Ni, Pb) kirliliğinin araştırılması
    (2013) Sümer, A.; Adiloğlu, S.; Çetinkaya, O.; Adiloğlu, A.; Sungur, A.; Akbulak, C.
    Bu çalışmada Çanakkale ili Karamenderes Havzası tarım alanlarında bazı ağır metallerin kirlilik düzeyleri araştırılmıştır. Bu amaçla havzada 80 farklı noktadan toprak örneği alınmıştır. Alınan toprak örneklerinde ekstrakte edilebilir Cr, Ni ve Pb analizleri yapılmıştır. Araştırma sonuçlarına göre Çanakkale ili Karamenderes Havzası topraklarında Pb kirliliği saptanmıştır. Toprakların Cr ve Ni içerikleri ise şimdilik izin verilebilir sınırlar arasındadır.
  • [ X ]
    Öğe
    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).
  • [ X ]
    Öğe
    Truva (Kumkale) topraklarında alınabilir çinkonun yersel ve zamansal değişimi
    (2012) Sungur, A.; Everts, T.; Özcan, H.
    Bu çalışmada Çanakkale için önemli bir tarım potansiyeline sahip olan Truva bölgesi (Kumkale Ovası) tarım alanlarından alınan toprak örneklerinde alınabilir çinkonun yersel ve zamansal değişimi incelenmiştir. Çalışmada; toplam 5260 ha’dan ekim dönemleri dikkate alınarak üç farklı zaman periyodundan (Aralık-Nisan-Temmuz) ve 51 ayrı noktadan (0–25 cm) alınan 153 adet toprak örneği kullanılmıştır. Araştırma sonuçlarına göre, alınabilir çinko miktarı iklimsel etmenlere bağlı olarak zamansal, toprak özelliklerine göre de yersel olarak değişiklikler göstermiştir. Çalışma alanında Aralık ayında örnekleme noktalarında çinko yeterli seviyenin üzerinde iken Nisan ve Temmuz dönemlerinde bazı örnekleme noktalarında limit değerlerinin altında olduğu saptanmış ve coğrafi bilgi sistemi (CBS) kullanılarak dağılım haritaları oluşturulmuştur.