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Öğe Evaluation of Analysis Results and Element Analysis of Salted Field Plant Spergularia rubra (L) J. Presl & C. Presl Using Chemometric Techniques(2018) Teğin, İbrahim; Yüksel, Uyan; Fidan, MehmetSpergularia (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, antidiabetic, anti-cholinesterase antidiabetic agents. There are seven species of the genus second side being endemic in Turkey. In this study, all samples collected had been digested by microwave digestion system then element analysis of Spergularia rubra (L.) bitumen grown in the areas of Akdoğmuş, Çöl, Çaykaya, Gölgelikonak and Üzümlük in Siirt and surrounding areas was carried out by ICP-OES. The highest values of Be, Cd, Co, Cr, Cu, Li, Mn, Mo, Nb, Pb, Sb and Se were found to be 1.44, 1.62, 1.95, 8.38, 10.21, 5.78, 64.60, 1.51, 9.78, 2.87, 3.43 mg / L, respectively; Fe, K, Mg and Na values were found to be 1.56, 23.72, 14.82, 33.66 g / L. The highest concentrations of Na and K were found in Akdoğmuş and the concentrations of Fe and Mg were found in the Çöl. Chemometric techniques such as correlation, PCA and CA have been applied to saline areas and elemental contents. In the chemometric study, it was seen that the correlations at 99% level were very high. From the principle component analysis (PCA), the first two eigenvalues were found to be ?1. Two factors were found after maximal rotation and commonality.Öğe Preconcentration with bacillus subtilis immobilized amberlite xad-16: determinations of cu2+ and ni2+ in river, soil, and vegetable samples(Bioremediation Journal, 2015) Okumuş, Veysi; Özdemir, Sadin; Kılınç, Ersin; Dündar, Abdurrahman; Yüksel, Uyan; Baysal, ZübeydeSolid-phase extraction (SPE) method was developed for the preconcentration of Cu and Ni before their determination by inductively coupled plasma optical emission spectrometry (ICP-OES). Bacillus subtilis– immobilized Amberlite XAD-16 was used as biosorbent. Effects of critical parameters such as pH, flow rate of samples, amount of Amberlite XAD-16 and biosorbent, sample volume, eluent type, and volume and concentration of eluent on column preconcentration of Cu and Ni were optimized. Applicability of the method was validated through the analysis of the certified reference tea sample (NCS ZC73014). Sensitivity of ICP-OES was improved by 36.4-fold for Cu2C and 38.0-fold for Ni2C by SPE-ICP-OES method. Limit of quantitation (LOQ) was found to be 0.7 and 1.1 ng/ml for Cu2C and Ni2C, respectively. Concentrations of Cu and Ni were determined by ICP-OES after application of developed method. Relative standard deviations (RSDs) were lower than 4.9% for Cu and 7.9% for Ni. The Tigris River that irrigates a large agricultural part of Southeast Turkey is polluted by domestic and industrial wastes. Concentrations of Cu and Ni were determined in water, soil, and some edible vegetables as a biomonitor for heavy metal pollution.Öğe Selective preconcentration of lanthanum (III) by coriolus versicolor immobilized on amberlite XAD-4 and its determination by ICP-OES.(International Journal of Environmental Analytical Chemistry, 2014) Özdemir, Sadin; Okumuş, Veysi; Dündar, Abdurrahman; Çelik, Kadir; Yüksel, Uyan; Kılınç, ErsinCoriolus versicolor, a wood fungus, was immobilised on Amberlite XAD-4 and used as solid-phase biosorbent for preconcentrations of rare earth elements. La(III), Th(IV), U(IV) and Ce(III) were subjected to solid-phase extraction procedure. We observed that La(III) was selectively preconcentrated, while other ions remained in solution at pH 6.0. 5.0 mL of 1.0 mol L−1 HCl was used to elaute La(III) from column. 250 mg of C. versicolor loaded on 1000 mg of XAD-4 was optimised as solid-phase matrix. Concentrations of ions in solutions were determined by inductively coupled plasma– optical emission spectrometry (ICP-OES). The calibration plot after preconcentration was linear in the range from 1.0 to 50.0 ng mL−1 for La(III). Limit of detection was found as 0.27 ng mL−1 for La(III) by SPE method. Relative standard deviation was found lower than 6.7% for 1.0 ng mL−1 of La(III) solution (n = 10). The sensitivity of ICP-OES was improved by a factor of 46.8. The applicability of the method was validated through the analysis of certified reference samples of tea (NCS ZC-73014) and spinach (NCS ZC-73013).Öğe Siirt ilinde toplanan Carlina lanata L. bitkisinin ICP-OES ile element analizi(İKSAD YAYINEVİ, 2018) Teğin, İbrahim; Yüksel, Uyan; Canpolat, GurbetCarlina, papatyagiller familyasının bir cinsi olup dünyada yaklaşık 23 türü bulunmaktadır. Carlina cinsinin dünyadaki yayılışı ağırlıklı olarak Avrupa ve Güneydoğu Asya’dır. Ayrıca Doğu Asya ve Kuzey Amerika’da da türleri bulunmaktadır [1, 2]. Türkiye’de Carlina cinsinin bir tanesi endemik olmak üzere toplam 11 taksonu bulunmaktadır [3]. Türkiye’de bulunan türler șunlardır: C. traganthifolia Klatt, C. corymbosa L., C. graeca Heldr. & Sart., C. oligocephala Boiss. & Kotschy, C. involucrata Poiret subsp. libanotica (Boiss.) Meusel & Kästner, C. lanata L., C. vulgaris L., C. intermedia Schur, C. biebersteinii Bernh. ex Hornem [4]. Bu çalışmada, kullanılan bitki, Siirt'teki Akdoğmuş köyünün tuzlu alanından toplanmıştır. Bu bitki gölgede oda sıcaklığında kurutulmuş ve daha sonra öğütülmüştür. Çözünürleştirme işlemi için; ilk olarak, kurutulmuş bitki 0,5 g olarak tartılıp ve basınca dayanıklı PTFE (Politetrafloroetilen) kabına konuldu. Daha sonra, 10 mL nitrik asit ve 2 mL hidrojen peroksit karışımı, tartılan bitki numunesine ilave edildi ve karışım, NO2 dumanları çıkana kadar beklemeye bırakıldı. Akabinde, karışımın çözünmesi, PTFE kaplarda Speedwawe MWS-3 Berghof marka mikrodalga fırınında gerçekleştirildi. Çözünürleştirme sonrası süzülen numuneler son hacimleri destile su ile 25 mL' ye tamamlandı. Element miktarlarını belirlemek için Model Optima ™ 7000 DV ICP-OES (İndüktif Eşleşmiş Plazma Optik Emisyon Spektrometresi) (Perkin Elmer, Inc., Shelton, CT, ABD) kullanılmıştır. Siirt, Akdoğmuş köyü tuzlu alanda yetişen Carlina lanata L. bitkisinin element analiz sonuçlarına göre, mg/L olarak belirlenen elementlerin değerleri aşağıdaki gibidir; As, Be, Cd, Co, Cr, Cu, Fe, Li, Mn, Mo, Ni, Pb, Sb, Se, Sr, Ti, V ve Zn değerleri sırasıyla 3,13; 1,56; 1,43; 0,95; 1,77; 5,23; 86,60; 2,85; 16,79; 1,56; 1,70; 10,94; 3,67; 6,87; 120,04; 4,62; 0,68 ve 12,78’tir. Bunun dışında K, Mg ve Na gibi makro elementler g/L olarak bulunmuş ve değerleri sırasıyla 9,92, 1,06 ve 2,09'dur.
