Browsing by Author "Akba, Osman"
Now showing items 1-18 of 18
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Application of Modified BCR Sequential Extraction Method for the Fractionation and ICP-OES Determination of Copper in Asphaltite Combustion Waste
Aydin, Firat; Gunduz, Beniz; Aydin, Isil; Akba, Osman; Saydut, Abdurrahman; Hamamci, Candan (Atomic Spectroscopy Press Ltd, 2013)Asphaltite is derived from petroleum-origin solid fossil fuel. It contains many elements in different forms which may change during the combustion process. This study presents a modified BCR sequential extraction method ... -
Bazı bor-fosfor bağlı bileşiklerin sentezi ve karakterizasyonu
Bilen Kaya, Duygu (2016)Boranın ve bor gruplarının kimyasal reaksiyonlarda fosfînlere koruyucu grup olarak bağlanması nedeniyle fosfinoboran bileşikleri son yıllarda büyük önem kazanmıştır. Çeşitli bor, organobor, fosfor ve organofosfor bileşiklerinden ... -
BIOACCUMULATION OF COPPER, CADMIUM AND NICKEL IN DUCKWEED (Lemna trisulca)
Kara, Yesim; Akba, Osman (Parlar Scientific Publications (P S P), 2015)Duckweeds are small free-floating plants often farming dense mats on the surface of stillor slow flowing water. Lemna trisulca (Duckweed) was examined for its ability to remove heavy metals. In laboratory conditions, plants ... -
Chemical Characteristics of Settled Particles during a Dust-Storm
Aydin, Firat; Aydin, Isil; Erdogan, Sait; Akba, Osman; Isik, Birgul; Hamamci, Candan (Hard, 2012)Major synoptic systems bring desert dust from Arabia and the Sahara to Anatolia, Turkey. A study of particulate matter (PM) associated metal content such as As, Al, Cr, Cd, Co, Cu, Fe, Mn, Mo, Ni, Pb, Sb, Se, Sn, and Zn, ... -
Comparison of microwave and conventional digestion of copper ores and determination of heavy metals by ICP-AES
Akba, Osman; Ozturk, Gulsen; Biricik, Nermin; Gumgum, Bahattin (Asian Journal Of Chemistry, 2006)This paper summarizes the results obtained in applying conventional and microwave digestion techniques to Maden and Hazro copper materials for subsequent analysis by inductively coupled plasma (ICP-AES). -
Content and Mobility Behavior of Iron and Manganese in Asphaltite Burning Residue Using ICP-OES
Aydin, Isil; Gunduz, Beniz; Aydin, Firat; Akba, Osman; Saydut, Abdurrahman; Hamamci, Candan (Atomic Spectroscopy Press Ltd, 2014)The determination of inorganic pollutants leaching from solid waste, such as coal, asphaltite, oil shale, and ash, is an important topic for industrial applications and solid waste management. This study presents the ... -
Heteropoli asit ve komplekslerin spektroskopik incelenmesi ve analitik uygulamalarının araştırılması
Akba, Osman (2018)Heteropoli asit ve komplekslerinin spektroskopik özellikleri TGA, İR, XRD, UV, SEM fotoğraflama teknikleri ile incelendi. İncelenen heteropoli asitler, düşük düzeyde özgül yüzey alanı göstermektedir. Bunların katalitik ... -
Katalizör olarak kullanılabilecek heteropoli asit tuzlarının hazırlanması
HPA'lann heterojen ve homojen katalizör olarak kullanılmaları çeşitli organik bileşiklerin sentezlenmesi açısından yeni bir çığır açmıştır. 1982 yılında HPA'nın katalizörlüğünde metakrolein'den metakrilik asit eldesinin ... -
Major and Trace Element Contamination of Short-Term Snow Cover During and After a Dust Storm and Analysis by ICP-OES
Akba, Osman; Kilinc, Ersin; Aydin, Isil; Erdogan, Sait; Aydin, Firat; Duz, M. Zahir; Hamamci, Candan (Atomic Spectroscopy Press Ltd, 2013)The levels of major and trace elements are key data for evaluating the toxicity of potential particulate matter and for identifying pollution sources. From this point of view, snow is considered an ideal matrix to observe ... -
Methyl ester of peanut (Arachis hypogea L.) seed oil as a potential feedstock for biodiesel production
Kaya, Canan; Hamamci, Candan; Baysal, Akin; Akba, Osman; Erdogan, Sait; Saydut, Abdurrahman (Pergamon-Elsevier Science Ltd, 2009)The peanut (Arachis hypogea L.) seed oil was extracted from the seeds of the peanut that grows in SE Anatolia of Turkey. Oil was obtained in 50 wt/wt.%, by solvent extraction. Peanut (A. hypogea L) seed oil was investigated ... -
Preparation and solvent extraction of nickel complex of O, O'-dinonyldithiophosphate and its application to spectrophotometric determination of nickel in sediment samples
Gümgüm, Bahattin; Biricik, Nermin; Baysal, Akın; Akba, Osman; Öztürk, Gülşen (Wiley-V C H Verlag Gmbh, 2006)Nickel complex of O, O'-dinonyldithiophosphoric acid was prepared and characterised. Solvent extraction of nickel dinonyldithiophosphate[Ni(DNDTP)(2)] from acidic aqueous solutions into different organic phases was ... -
Relationship between wintertime atmospheric particulate matter and meteorological conditions in Diyarbakir (Turkey)
Erdogan, Sait; Baysal, Akin; Akba, Osman; Merdivan, Melek; Hamamci, Candan (Asian Journal Of Chemistry, 2007)This paper reported the changes in pollution concentration in Diyarbakir, South east region of Turkey in the winter half of the year from 1986 to 2004 and describes the relationships with meteorology. Particulate matter ... -
Simultaneous Determination of Transition Metals in Hazelnuts (Corylus avellana L.) by ICP-OES
Celik, K. Serdar; Aydin, Firat; Duz, M. Zahir; Aydin, Isil; Erdogan, Sait; Akba, Osman; Hamamci, Candan (Atomic Spectroscopy Press Ltd, 2014)Heavy metal concentrations in foods are of interest because of their essential or toxic nature. The present work reports the results obtained for the simultaneous determination of essential and/or toxic metals (Cd, Co, Cr, ... -
Simultaneous Multielement Determination of Al, As, Cd, Cr, Cu, Fe, Hg, Mn, Ni, Pb, Sn, and Zn in Bulgur Wheat by ICP-OES
Erdogan, Sait; Aydin, Isil; Duz, M. Zahir; Aydin, Firat; Celik, K. Serdar; Akba, Osman; Hamamci, Candan (Atomic Spectroscopy Press Ltd, 2015)Bulgur is one of the oldest cereal-based foods. This study explains the simultaneous determination by the proposed method for toxic elements such as Al, As, Cd, Cr, Cu, Fe, Hg, Mn, Ni, Pb, Sn, and Zn in bulgur by ICP-OES ... -
Synthesis and characterization of new bis(diphenylphosphino)aniline ligands and their complexes: X-ray crystal structure of palladium(II) and platinum(II) complexes, and application of palladium(II) complexes as pre-catalysts in Heck and Suzuki cross-coupling reactions
Aydemir, Murat; Durap, Feyyaz; Baysal, Akin; Akba, Osman; Gumgum, Bahattin; Ozkar, Saim; Yildirim, Leyla Tatar (Pergamon-Elsevier Science Ltd, 2009)Two new bis(diphenylphosphino)isopropylphenylamines, (PPh2)(2)N-C6H4-CH(CH3)(2), having the isopropyl substituent at the carbon atom 2 (1) or 4 (2), were prepared by the aminolysis of chlorodiphenylphosphine with isopropyl ... -
Synthesis and characterization of polyoxometallate compounds of amine and phosphine with molybdovanadophosphoric acid in Keggin type
Gumgum, Bahattin; Akba, Osman; Baysal, Akin; Hamamci, Candan (Asian Journal Of Chemistry, 2006)Four novel compounds were synthesized by the reaction of tertiary amines (triphenyl amine, triethyl amine, tributyl amine) and triphenyl phosphine with freshly prepared molybdovanadophosphoric acid (H4PMO11VO40 center dot ... -
Synthesis and characterizations of N,N,N?,N?-tetrakis (diphenylphosphino)ethylendiamine derivatives: Use of palladium(II) complex as pre-catalyst in Suzuki coupling and Heck reactions
Akba, Osman; Durap, Feyyaz; Aydemir, Murat; Baysal, Akin; Guemguem, Bahattin; Oezkar, Saim (Elsevier Science Sa, 2009)Oxidation of N,N,N',N'-tetrakis(diphenylphosphino)ethylendiamine (1) with elemental sulfur and selenium gives the corresponding sulfide and selenide, respectively, [(Ph2P(E))(2)NCH2CH2N(P(E)Ph-2)(2)] (E: S 1a, Se 1b). ... -
Synthesis, characterization, crystal and molecular structure of diphenyloxophosphinoethylenediamines
Guemguem, Bahattin; Akba, Osman; Durap, Feyyaz; Yildirim, Leyla Tatar; Uelkue, Dincer; Oezkar, Saim (Pergamon-Elsevier Science Ltd, 2006)Bis-, tris- and tetrakis(diphenyloxophosphino)ethylenediamine compounds can be synthesized starting with ethylenediamine and chlorodiphenylphosphine. Bis(diphenylphosphino)ethylenediamine and tris(diphenylphosphino)ethylenediamine ...
