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Browsing Kimya / Chemistry by Subject "Spectroscopy"

Now showing items 1-20 of 23

Analysis of Saccharides by the Addition of Amino Acids

Özdemir, Abdil; Jung-Lee Lin; Kent J. Gillig; Gülfen, Mustafa; Chung-Hsuan Chen (SPRINGER, 2016)

In this work, we present the detection sensitivity improvement of electrospray ionization (ESI) mass spectrometry of neutral saccharides in a positive ion mode by the addition of various amino acids. Saccharides of a broad ...
Application of Wet vs. Microwave Digestion for Trace Element Determination in Soil, Vegetable, Nuts, and Grain Samples by ICP-OES

Altundağ, Hüseyin; Sinem Albayrak; Mustafa S. Dundar; Mustafa Tuzen; Mustafa Soylak (PERKIN-ELMER CORP, 2015)

In this study, the ICP-OES determination of the trace elements Co, Cr, Cu, Fe, Mn, Ni, Se, and Zn in soil, vegetable, nuts and grain samples from Sakarya, Turkey, was evaluated after wet and microwave digestion. Element ...
Charge transfer complex formation between p-chloranil and 1,n-di(9-anthryl)alkanes

Arslan, Mustafa (PERGAMON-ELSEVIER SCIENCE LTD, 2006)

Dimer model compounds of polyvinylanthracenes (1,n-di(9-anthryl)alkanes, when n = 1-5) were synthesized to model the effects of distance and orientation between anthracene groups in polymeric systems. Charge transfer (CT) ...
Charge transfer complex studies between some non-steroidal anti-inflammatory drugs and pi-electron acceptors

Demirhan, Hülya; Küçükislamoğlu, Mustafa; Zengin, Mustafa (PERGAMON-ELSEVIER SCIENCE LTD, 2006)

Charge transfer (CT) complexes of some non-steroidal anti-inflammatory drugs, naproxen and etodolac which are electron donors with some pi-acceptors, such as tetracyanoethylene (TCNE), 2,3-dichloro-5,6-dicyano-p-benzoquinone ...
Charge transfer complex studies between some non-steroidal anti-inflammatory drugs and pi-electron acceptors

Arslan, Mustafa; Küçükislamoğlu, Mustafa; Zengin, Mustafa (PERGAMON-ELSEVIER SCIENCE LTD, 2006)

Charge transfer (CT) complexes of some non-steroidal anti-inflammatory drugs, naproxen and etodolac which are electron donors with some pi-acceptors, such as tetracyanoethylene (TCNE), 2,3-dichloro-5,6-dicyano-p-benzoquinone ...
Charge-transfer complex formation between p-chloranil and 1,n-dicarbazolylalkanes

Arslan, Mustafa (PERGAMON-ELSEVIER SCIENCE LTD, 2007)

Dimer model compounds of polyvinylcarbazoles (1,n-di(N-carbazolyl)alkanes, when n = 1-5) were synthesized to model the effects of distance and orientation between carbazole groups in polymeric systems. Charge-transfer (CT) ...
Column Solid Phase Extraction of Ni(II) and Cu(II) Using Salicylaldehyde-Modified Polyamine Polyurea Resin for Their Determination by FAAS in Waters

Özer, Çiğdem; İmamoğlu, Mustafa (PERKIN-ELMER CORP, 2017)

extraction-preconcentration procedure was developed by using a salicylaldehyde modified polyamine polyurea resin as solid phase adsorbent for the determination of Ni(II) and Cu(II) ions at trace level in waters by flame ...
Electrode-assisted desorption electrospray ionization mass spectrometry

Özdemir, Abdil (WILEY, 2010)

A new ion source has been developed for rapid, noncontact analysis of materials at ambient conditions. The method provides desorption of analytes under ambient conditions directly from different surfaces with little or no ...
FAAS Determination of Au and Pd After Selective Preconcentration on Ethylenediamine Silica Material Prepared By the Sol-Gel Method

İmamoğlu, Mustafa (PERKIN-ELMER CORP, 2012)

The recoveries for Au(111) and Pd(II) ions under optimum preconcentration conditions were 99 +/- 2 and 98 +/- 2% at the 95% confidence level, respectively. The analytical detection limits of Au and Pd were 0.20 and 0.21 ...
Fe-tannic acid complex dye as photo sensitizer for different morphological ZnO based DSSCs

Soner Cakar; Özacar, Mahmut (PERGAMON-ELSEVIER SCIENCE LTD, 2016)

In this paper we have synthesized different morphological ZnO nanostructures via microwave hydrothermal methods at low temperature within a short time. We described different morphologies of ZnO at different Zn(NO3)(2)/KOH ...
Investigation of Charge Transfer Complexes Formed between Mirtazapine and Some pi-Acceptors

Demirhan, Hülya; Arslan, Mustafa; Zengin, Mustafa; Küçükislamoğlu, Mustafa (HINDAWI LTD, 2013)

Charge transfer complexes (CTC) of mirtazapine with tetracyanoethylene (TCNE), 2,3-dichloro-5,6-dicyano-p-benzoquinone (DDQ), and tetracyanoquinodimethane (TCNQ) have been studied spectrophotometrically in dichloromethane ...
Investigation of Charge Transfer Complexes Formed between Mirtazapine and Some pi-Acceptors

Demirhan, Hülya; Küçükislamoğlu, Mustafa; Zengin, Mustafa (HINDAWI LTD, 2013)

Charge transfer complexes (CTC) of mirtazapine with tetracyanoethylene (TCNE), 2,3-dichloro-5,6-dicyano-p-benzoquinone (DDQ), and tetracyanoquinodimethane (TCNQ) have been studied spectrophotometrically in dichloromethane ...
Investigation of non-covalent complexations of Ca(II) and Mg(II) ions with insulin by using electrospray ionization mass spectrometry

Gülfen, Mustafa; Özdemir, Abdil; Jung-Lee Lin; Chung-Hsuan Chen (WILEY-BLACKWELL, 2016)

ConclusionsThe binding equilibrium constants of Ca(II)- and Mg(II)-insulin non-covalent complexes have been determined successfully by ESI-MS. Ca(II) and Mg(II) ions are involved in the insulin secretion by forming ...
Mercury Determination in Muscle Tissue of Fish Samples Using Microwave Digestion and GAAS Analysis

Altundağ, Hüseyin; Tulay Kupeli; Altıntığ, Esra; Ali Imran Vaizogullar; Ibrahim Kula; Mustafa Tuzen; İmamoğlu, Mustafa (PERKIN-ELMER CORP, 2017)

In this study, the mercury (Hg) levels in muscle tissue of 19 different fish species were determined. The fish samples were collected from the Sakarya River, Sakarya Cark Stream, Sapanca Lake and the Western Black Sea, ...
Preconcentration and Determination of Cd, Co, Cu, Ni, Pb, and Zn in Water Samples Using Cloud Point Extraction and Ultrasonic Nebulization Coupled With Inductively Coupled Plasma Optical Emission Spectrometry

Dündar, Mustafa Şahin; Altundağ, Hüseyin (PERKIN-ELMER CORP, 2016)

In this work, the ions of Cd2+, Co2+, Cu2+, Ni2+, Pb2+, and Zn2+ in different natural water samples were separated and pre-concentrated using cloud point extraction and determined in combination with an ultrasonic nebulizer ...
Quantitative ICP-OES Determination of Trace and Essential Elements in the Plant Species of Genus Ferula

Sermin Yelkenci; Altundağ, Hüseyin; Sağıroğlu, Mehmet; Abdul Razaque Memon (PERKIN-ELMER CORP, 2016)

Some of the species belonging to the genus ferula are known to be used as traditional medicine for treating various diseases in South Asia, the Middle East, and in North Africa. In this study, samples from 20 varieties of ...
Selective Determination of Cr(VI) by FAAS After Solid Phase Extraction on Bis(3-aminopropyl)amine-Bonded Silica Gel

İmamoğlu, Mustafa; Altundağ, Hüseyin (PERKIN-ELMER CORP, 2013)

The recovery of the Cr(VI) ions was not affected by anions and cations widely found in environmental water samples. Adsorbed Cr(VI) on the column could be easily eluted using 5.0 mL of a 2.0M HCl solution. Cr(VI) adsorption ...
Solid Phase Extraction of Au and Pd by Silica Gel Functionalized With Triethylenetetramine for Determination by FAAS

İmamoğlu, Mustafa (PERKIN-ELMER CORP, 2012)

Flame atomic absorption spectrometry (FAAS) was used throughout the study for the determination of Au, Pd, and other metal concentrations. The detection limits of FAAS (3 delta) for Pd(II) and Au(III) were 0.26 and 0.24 ...
Speciation of Antimony Using Dithizone Ligand via Cloud Point Extraction and Determination by USN-ICP-OES

Dündar, Mustafa Şahin; Ferhat Kaptan; Caner, Celal; Altundağ, Hüseyin (PERKIN-ELMER CORP, 2018)

In this paper, a cloud point extraction (CPE) method is described and inorganic antimony species were determined by using an inductively coupled plasma optic emission spectrometer coupled to an ultrasonic nebulizer ...
Spectroscopic studies of charge transfer complexes between colchicine and some pi acceptors

Arslan, Mustafa (PERGAMON-ELSEVIER SCIENCE LTD, 2007)

Charge transfer complexes between colchicine as donor and pi acceptors such as tetracyanoethylene (TCNE), 2,3-dichloro-5,6-dicyano-p-benzoquinone (DDQ), p-chloranil (p-CHL) have been studied spectrophotometrically in ...