İbrahim Teğin

İbrahim Teğin
Siirt University · Department of Chemistry

Professor

About

66
Publications
15,032
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481
Citations
Additional affiliations
January 2013 - present
Siirt University
Position
  • Professor (Associate)
February 2005 - September 2007
Dicle University
Position
  • Research Assistant
January 2005 - September 2007
Dicle University
Position
  • Research Assistant

Publications

Publications (66)
Article
Propolis, a natural product with remarkable therapeutic potential, has gained attention for its antimicrobial, antioxidant, and anti-inflammatory properties. In this study, propolis samples from Sarıyaprak, Kovanağzı, and Çemikari in Pervari, Siirt province, were analysed comprehensively. The evaluation included wax composition, DPPH and FRAP assay...
Article
Developing a streamlined and accessible method for identifying the bioactive components of Rheum ribes (rhubarb) holds significant promise in unlocking its therapeutic potential and advancing research in natural medicine. In this study, bioactive components of rhubarb such as total phenolics and flavonoids as well as the antioxidant activity of its...
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This study explores the recovery and preparation of Pb from Zn plant residues (ZPR), specifically leaching filter cake (LFC), through a hydrometallurgical process that includes the cementation of Pb using Zn and Al powder. The process consists of three key stages: acidic washing of zinc, alkali leaching, and the subsequent cementation of lead using...
Conference Paper
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Metal recovery from waste prevents pollution and supports environmental sustainability, while also conserving natural resources and reducing raw material costs and waste management expenses. Developing recovery methods drives technological innovation and enhances extraction efficiency, helping industries meet environmental regulations and avoid leg...
Conference Paper
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Recently, the surge in production and consumption has led to increased pollution of natural resources and a growth in waste. Prioritizing the disposal or reuse of generated waste, aiming to reduce its quantity through recycling or recovery, is among the desired goals. For this purpose, wastewater treatment processes are carried out using environmen...
Article
Allium dictyoprasum C.A. Meyer ex Kunth (A. dictyoprasum) underwent comprehensive analysis, encompassing quantum chemical computations to assess its radical scavenging potential, chemical and elemental composition, total phenolic content, and antimicrobial activity. Experimental and theoretical investigations focused on elucidating the radical scav...
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In this study, in the first stage, biochar is produced from green pistachio hulls (PGHMAC) by microwave heating method, which saves energy, time and cost. In the second step, with the activation of phosphoric acid (H3PO4), the surface properties of the biochar were modified by phosphorus (P) and oxygen (O) doping (O- and P-doped PGHMAC). This adsor...
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In this study, the removal of Reactive Blue 19 dyestuffs in aqueous systems was investigated by adsorption method using activated carbon obtained from the pumpkin seed waste. Activated carbon obtained from pumpkin seed waste functionalized with ZnCl2 was used as an absorbent. Pumpkin seed hydrochar was characterized by FT-IR, SEM, TGA-DTA, BET, and...
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Microwave heating is one of the leading methods that save energy, time, and cost for the conversion of bio-waste into biochar in the agricultural sector. In this study, in the first stage, economical biochar production from pistachio green hulls by microwave heating method is in question. In the second step, sodium hydroxide(NaOH) activation was fo...
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Trace elements found in sheep milk are present as inorganic ions and their salts as part of organic molecules such as proteins, fats, carbohydrates and nucleic acids. The chemical form of trace elements found in milk is important as it determines their absorption and biological utilisation in the intestine. In this study, trace element concentratio...
Conference Paper
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zet Sürekli olarak gelişen endüstrinin beraberinde gelen su ve çevre sorunları her geçen gün artmaktadır. Özellikle endüstriyel kaynaklı atık sularda ve yüzey sularında insan sağlığını tehdit eden kirlilikler oluşmaktadır. Bu kirliliklerin giderilmesine dair sürekli olarak çalışmalar yapılagelmektedir. Suların içerdikleri tehlikeli kirleticilerden...
Conference Paper
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The taxa belonging to the Apiaceae family have different smells and tastes due to the phytochemical compounds they contain. Because of these properties, they have been used by humans since very early times. Many taxa from the Apiaceae family are rich in volatile compounds. Today, phytochemical compounds are used in preventive medicine as well as in...
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The aim of this study is based on the efficient removal of cadmium ions (Cd²⁺) from aqueous solutions with the adsorbent obtained by various modification strategies on hydrochar-based carbon particles obtained by hydrothermal carbonization from green pistachio hulls as a precursor. Hydrochloric acid (HCl), sodium hydroxide (NaOH), or phosphoric aci...
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Pesticides are dangerous chemicals that can harm to people and the environment when applied inappropriately or in excess. In this research, various pesticide residues were investigated in 48 pepper samples using liquid chromatography-tandem mass spectrometry (LC-MS/MS). All samples were collected randomly in two periods of time (September and Decem...
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In this study, the fabrication of two-step phosphorus-doped porous carbon particles for adsorbent design based on low-cost biomass is performed for heavy metal removal. In the first step, activated carbon is produced from pistachio shells as biomass by activation of potassium hydroxide (KOH) (PSAC/KOH). In the second step, as a result of the activa...
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Full-text available
Here, the activated carbon (AC) was first produced by potassium hydroxide (KOH) activation from pistachio shells. Subsequently, the obtained AC was modified with hydrogen peroxide (H2O2) activation. Cu (II) and Zn (II) ions adsorption using the KOH-AC-H2O2 was carried out from wastewater. The correlation coefficient (R2) values in the adsorption of...
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Eremurus spectabilis M. Bieb was extensively investigated experimentally and theoretically, including the antioxidant properties of compounds such as flavonoids, hydroxycinnamic acid derivatives, hydroxybenzoic acid derivatives, and organic acids. Antioxidant activity was investigated using the Density Functional Theory (DFT) method based on three...
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Hazelnut shell biosorbent immobilized on Amberlite XAD-4 polymer resin as solid phase extraction method was developed and used for preconcentration of Cu(II) and Cd(II) ions from aqueous solutions. Concentrations of analytes in solutions were determined by Flame Atomic Absorption Spectrometry after extraction with column technique. Functional group...
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The concentrations of 30 elements (Li, Be, B, Na, Mg, P, K, Ca, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, As, Se, Sr, Mo, Cd, Sn, Sb, Ba, La, Ce, Pt, Tl and Pb) in cultivated stems of rhubarb samples collected from the Kurdish region of Iraq (Sor, Rash, Karajar, Gara and Qalandar) and the Siirt region of Turkey (Pervari and Şirvan) were determined by Indu...
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In this study, a two-step method was applied to obtain an effective adsorbent for cadmium (Cd) (II) and lead (Pb)(II) adsorption. The first stage includes the production of activated carbon (AC) from almond shells, which is agricultural waste, by microwave heating and potassium hydroxide (KOH) chemical agent. The second stage includes nitrogen and...
Conference Paper
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Known as a non-endemic herbaceous plant, Allium kharputense Freyn Et Sint is found in eastern Turkey (Siirt, Şırnak, Tunceli, Muş, Bitlis, Hakkâri, Van provinces), Iraq and Iran, at an altitude of 900-2000 m, grassy slopes, calcareous grows naturally in fields and slopes. Along with the use of this plant in traditional medicine, it also has anti...
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In this study, the production of activated carbon based on almond shells by microwave heating with KOH activation and then the modification of activated carbon with phosphorus and oxygen as a result of hydrothermal heating with phosphoric acid were carried out to increase the Cd(II) and Pb(II) adsorption efficiency. The resulting materials were cha...
Conference Paper
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This plant, which is popularly called sirik or sirmo (Allium vineale L.), is found naturally in the Istranca Section, Çatalca Kocaeli Section, Upper Sakarya Section, Upper Kızılırmak Section, Upper Fırat Section, Upper Murat Van Section and Hakkâri Section in Turkey. This plant is widely used by the people of the region as it gives a pleasant ta...
Article
One of the ways to increase the adsorption capacity of carbon-based materials is to add heteroatoms. However, the use of sulphur-doped carbons is quite limited. This study includes the production of activated carbon (AC) from almond shells by microwave heating and KOH chemical agent and sulphur doping by hydrothermal heating treatment of the obtain...
Conference Paper
Full-text available
Chromium, one of the heavy metals, is widely used in metallurgy to make hard and durable alloys and in the chemical industry. Trace metals such as chromium are still very difficult to determine directly, even with many advanced analytical techniques, due to their low concentration. It is inevitable to remove the difficulties and apply separation an...
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Thousands of tons of walnut and pistachio green outer shells emerge as waste sources. Recycling such wastes in environmental applications is of great importance. In this study, the efficiency of waste walnut and pistachio shell–based hydrochars in removing methylene blue (MB), which represents hazardous chemicals, from the water was investigated. O...
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This study was carried out on turnip (avtitu) obtained from a radish ecotype grown in Eruh region of Siirt. Antioxidant capacities, total phenolic and flavonoid amounts of DPPH (free radical scavenging), Ferric ion reducing antioxidant power (FRAP) analyses were performed in extracts obtained from radish with different solvents. In addition, the me...
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This study investigates a low-cost and economical raw and heat-treated clay sample as a potential adsorbent for a higher uptake of Cu(II), Pb(II) and Cd(II) ions from aqueous solutions. The characterization of the obtained raw and modified clay materials, X-ray fluorescence spectroscopy, thermogravimetric analysis, X-ray diffraction, Fourier transf...
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This study aims to apply an efficient and environmentally friendly subcritical water oxidation (SWO) method for the treatment of pistachio processing plant wastewater (PPPW). The effects of temperature (336.2-399.8 K), the concentration of H2O2 (0.08-0.92 M) and treatment time (6.4-73.6 min) on the oxidation of PPPW were investigated using the SWO...
Conference Paper
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Liquid-liquid extraction and determination of Molybdenum (VI) is very important in biological and industrial chemistry. In this study, a new method was developed for the determination of molybdenum in water, combining liquid-liquid extraction and slotted quartz tube - atom trap - atomic absorption spectrometry (SQT-AT-AAS). The amount of potassium...
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In this study, the removal of methylene blue (MB) by both raw and modified clay as an abundant, cost-effective was investigated. The modification of the raw clay was done by calcination, acid treatment, and again second calcination processes. In addition, the effects of calcination temperature and acid/base concentration on the adsorption capacity...
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In this study, Origanum acutidens (Hand.-Mazz.) Ietsw. (zemul), an endemic plant for Turkey, were extracted with two different solvents (Water and 80 % ethanol). O. acutidens samples were collected from Bingöl-Topalan (Collector registration number: MMH 1157). In this study, antioxidant activities, total phenolic and flavonoid content, also identif...
Article
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In this study, Origanum acutidens (Hand.-Mazz.) Ietsw. (zemul), an endemic plant for Turkey, were extracted with two different solvents (Water and 80 % ethanol). O. acutidens samples were collected from Bingöl-Topalan (Collector registration number: MMH 1157). In this study, antioxidant activities, total phenolic and flavonoid content, also identif...
Article
Full-text available
Allium vineale L. was extensively analysed to determine its radical scavenging activity, chemical composition, total polyphenol content, and elemental composition. The Soxhlet and the subcritical water extraction methods were performed for the extraction procedure. The extracts obtained in the subcritical water extraction method were evaluated by G...
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Spergularia (Caryophyllaceae) is seen as a cosmopolitan breed, ranging from temperate regions of all continents to sub-tropical climate regions, except for the Antarctic continent. Many of these strains have been investigated chemically and pharmacologically, such as hypoglycemic, diuretic, antihypertensive and cholesterol-lowering agents, antidiab...
Conference Paper
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Carlina is the one of the genus of Asteraceae family and has about 23 species in the world. The spread of the genus Carlina in the world is predominantly Europe and Southeast Asia. Also there are species of Carlina genus in East Asia and North America [1, 2]. There are 11 Carlina species in Turkey and 1 of them is endemic [3]. Species in Turkey are...
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Lepidium Perfoliatum L., Brassicaceae familyasının en büyük türlerinden biridir ve yaklaşık olarak 175 kadar türe sahiptir [1]. Öncelikle ılıman ve subtropikal bölgelerde; nadiren kuzey kutup bölgesi (arktik) iklimlerinde ve dağlık tropikal bölgelerde olmak üzere tüm Dünyada yayılış göstermektedir [2]. Türkiye'de Lepidium cinsinde 17 takson va...
Conference Paper
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Name probably for Plantago coronopus L.; in reference to the shape of basal leaves [1]. Plantago coronopus, commonly known as buckshorn banana ("diabelha" in Portugal), is a medical halophyte belonging to the Plantago L., the largest of the Plantaginaceae family [2]. Plantago will be those the vast majority paramount variety of the Plantaginaceae c...
Conference Paper
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Spergularia rubra has a very wide spread in the world. Infusion of S. rubra is used for diuretic purposes. Although widely used, the antioxidant activity of this species has not been evaluated and its chemical composition is not known [1]. In this study, antioxidant activity (DPPH %), total phenolic content (Folin Ciocalteau method) and phenolic co...
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In this study, two different samples were obtained from Küre Copper factory. It was determined that the samples contain: the sample of K.C.F. (Küre Copper Factory), 0.70% Cu and 0.5% Co. This sample was firstly grounded at -100 mesh dimension. Flotation was done according to previously obtained optimum flotation conditions. The flotation yield of C...
Conference Paper
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Teucrium is a genus of the Lamiaceae (Labiatate) family. 34 species (45 taxa) ara available in the Flora of Turkey. The T. polium subsp polium (acıyavşan) taxon, which constitutes the aim of our study, is a widely used plant in the folk medicine. In this study, the extract of T. polium subsp polium taxa was prepared with two different solvents (wat...
Conference Paper
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Throughout history, human beings have used plants as food, poison, treatment or pleasure plant. Findings from the excavations in the Sanidar cave, which is located in the Zagros mountains and considered as the starting point of modern humanity, are evidence of people using plants since their existence. In the works done in the Zagros mountains, rem...
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ABSTRACT In this study, sorbents as Siirt peanut shell with Amberlite XAD-4 immobilized on polymers of Cd (II) and Cu(II) ions were investigated conditions of enrichment by solid phase extraction method. The effect of the recovery yield of the ambient pH, eluent type and concentration, solution flow rate, the effect of solution volume, salt effect,...
Article
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In this study, the enrichment conditions of Cd (II) ions on Amberlite XAD-4 polymer immobilized with almond shell as biosorbent were investigated by solid phase extraction method. In addition, the effect of the recovery yield of the ambient pH, eluent type and concentration, flow rate of solution, effect of solution volume, salt effect, column repr...
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Gross a and b activity contents and element concentrations in well-known spa waters from the Siirt and the S¸ ırnak cities were determined and assessed by MPC- 9604 multi-detector a/b counting system and by wavelength dispersive X-ray fluorescence spectrometry. The 0.05–5.64 gross a and 0.06–2.76 Bq L-1 gross b activity levels and element concentra...
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Objective: Envenoming resulting from snakebites is a common devastating problem that is frequently seen in easternand southeastern regions of Turkey. This aim of this study is to observe the changes of snake venom on serum copper(Cu), zinc (Zn), and magnesium (Mg) levels in patients with snakebite.Materials and Methods: Patients with snakebite and...
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Objective: To determine the alterations of serum copper (Cu) and zinc (Zn) levels and Cu/Zn ratio in patients with brucellosis. Material and Methods: A total of 170 individuals were included in the study. Of these, 45 (26.5%) currently had acute or sub-acute brucellosis, 35 (20.6%) were previously diagnosed with acute or sub-acute brucellosis and s...
Article
Full-text available
The synthetic, structural, spectroscopic and analytical properties of steric hindered Schiff-base ligand [N-(3,5-di-tert-butylsalicylaldimine)-1-(2-Aminoethyl) piperazine (HL)] and its mononuclear Cu(II), Co(II) and Ni(II) complexes are described. The new unsymmetric steric hindered Schiff base ligand containing a donor set of NONO was prepared by...
Article
Full-text available
Wagner's classification is the most widely used grading system in diabetic foot infections. The aim of this study was to evaluate the role of the trace elements in diabetic foot infected patients graded with Wagner's classification. This prospective study was carried out on 50 diabetic patients with variable severity of foot infections and 50 age a...
Article
Full-text available
Selective serotonin reuptake inhibitors (SSRIs) are commonly used to treat depression. SSRIs are classifi ed as fl uoxetine, paroxetine, escitalopram, citalopram, sertraline, and fl uvox-amine. Several methods have been published for the determi-nation of SSRI drugs in pharmaceuticals, biological materials and environmental samples. This review cov...
Article
Full-text available
The synthetic, structural, spectroscopic and analytical properties of steric hindered Schiff-base ligand [N-(3,5-di-tertbutylsalicylaldimine)- 1-(2-Aminoethyl) piperazine (HL)] and its mononuclear Cu(II), Co(II) and Ni(II) complexes are described. The new unsymmetric steric hindered Schiff base ligand containing a donor set of NONO was prepared by...
Article
Full-text available
The synthetic, structural, spectroscopic and analytical properties of steric hindered Schiff-base ligand [N-(3,5-di-tert-butylsalicylaldimine)-1-(2-Aminoethyl) piperazine (HL)] and its mononuclear Cu(II), Co(II) and Ni(II) complexes are described. The new unsymmetric steric hindered Schiff base ligand containing a donor set of NONO was prepared by...
Article
Full-text available
Eight new macrocyclic complexes were synthesized by template reaction of 1,4-bis(3-aminopropoxy)butane or (±)-trans-1,2-diaminocyclohexane with metal nitrate and 1,2-bis(2-formylphenyl)ethane and their structures were proposed on the basis of elemental analysis, FT-IR, UV-Vis, molar conductivity measurements, 1H NMR and mass spectra. The metals to...
Article
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Amberlit XAD-16 was functionalized using dithioethylenediamine as a ligand and characterized by elemental analysis and FTIR spectro-scopy. The effects of contact time, pH, electrolyte and the concentration of eluent on separation and preconcentration of Pb(II), Cr(III) and Cr(VI) were studied. In addition, the batch capacity for each ion was deter-...
Article
Full-text available
Amberlit XAD-16 was functionalized using dithioethylenediamine as a ligand and characterized by elemental analysis and FTIR spectro-scopy. The effects of contact time, pH, electrolyte and the concentration of eluents on separation and preconcentration of Pb(II), Cr(VI) and V(V) were studied. In addition, the batch capacity for each ion was determin...
Article
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In the present work, Amberlite XAD-4 copolymer resin modified by rubeanic acid was synthesized for separation and preconcentration of Cu(II), Co(II), Ni(II)), Cd (II) and Mn(II). The optimization procedure for analytical parameters including pH, contact time, batch capacity, etc. was examined in order to obtain quantitative recoveries of metal ions...
Conference Paper
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Background: The aim of this study is to compare the serum Copper (Cu), Zinc (Zn), Magnesium (Mg) and Selenium (Se) levels of patients with chronic osteomiyelitis and healthy individuals. Methods: In this study, 42 patients with chronic osteomiyelitis, and 90 healthy individuals in the control group were included. From totally 132 individuals, 5 ml...
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A macrocyclic ligand has been synthesized by reaction of 2,6-diaminopyridine and 1,6-bis(2-formylphenyl).hexane. Its complexes with Cu(II), Ni(II), Pb(II), Zn(II), Cd(II) and La(III) have been synthesized by the reaction of ligand and Cu(ClO(4))(2)center dot 6H(2)O, Ni(ClO(4))(2)center dot 6H(2)O, Pb(ClO(4))(2)center dot 6H(2)O, Zn(ClO(4))(2)center...
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In this study, experiments were carried out on copper ore containing gold and silver obtained from Kisecik village of Hatay, which is in the south of Turkey. Analyses of original ore showed that the sample contained 4.93 % Cu, 0.007 % Co, 0.92 % Zn, 11.41 % Fe, 10.72, % S, 4.72 g/t Au and 12.80 g/t Ag. It was determined that gold and silver could n...
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This study deals with the separation of Mo, Cu, Zn and Pb from concentrates of a flotation process of Elazig region fluorite ore containing of molybdenum. The original ore contained (%) 1.08 Mo, 0.05 Cu, 1.12 Zn, 1.20 Pb and 12 F. The ore concentrate after flotation contained (%) 19.46 Mo, 0.87 Cu, 4.54 Zn and 2.65 Pb. The fluorite itself was separ...
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In present study, the effects of parameters such as acid concentration of the medium, amount of pyrite, initial Cr(VI) concentration, contact time, temperature and particle size of pyrite on the reduction of Cr(VI) by discontinuous experiments using raw pyrite and the pyrite samples roasted at high temperatures in vacuum were examined. Considering...
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P1518 Serum copper and zinc levels in patients with brucellosis M.F. Geyik, C. Ustun, I. Tegin, S. Hosoglu, C. Ayaz (Diyarbakir, TR) Objective: The aim of this study is to compare the serum Copper (Cu) and Zinc (Zn) levels of patients with brucellosis and healthy individuals. Material and Methods: In this study, 43 patients with brucellosis, and...
Article
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The removal of toxic cadmium(II) and lead(II) from aqueous solutions was investigated using calcite, which is inexpensive and widespread over the globe, as the effective inorganic adsorbent. The experimental data of the removal equilibrium were correlated by either the Langmuir or Freundlich equations. Results indicate that the Langmuir model gave...
Article
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The molybdenum and fluorite were obtained in different phases with the flotation of fluorite ore containing molybdenum obtained from Karaamağaradere-Keban-Elazığ district in Turkey. It has been found that the original ore contains 1.08 % Mo, 0.05 %Cu, 1.20 % Pb, 1.12 % Zn and 12.0 % F. It was determined that molybdenum and fluorite could not be enr...

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