Tıbbi Hizmetler ve Teknikler Bölümü

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Citation - WoS: 10
Citation - Scopus: 10
Preconcentration of Sn in Real Water Samples by Solid Phase Extraction Based on the Use of Helvella leucopus as a Fungal Biomass Prior to its Determination by ICP-OES
(ATOMIC SPECTROSCOPY, 2013) Kilinc, Ersin; Dundar, Abdurrahman; Ozdemir, Sadin; Okumus, Veysi; 21.02. Department of Medical Services and Techniques / Tıbbi Hizmetler ve Teknikleri Bölümü; 21. Vocational School of Health Services / Sağlık Hizmetleri Meslek Yüksekokulu; 01. Mardin Artuklu University / Mardin Artuklu Üniversitesi
Recently, biosorbents of biological origin such as fungus, algae, and bacteria have found special application as packing material in solid phase extraction (SPE). In this study, an alternative SPE method was developed and validated for the preconcentration of Sn prior to its determination by inductively coupled plasma optical emission spectrometry (ICP-OES). Helvella leucopus, a fungal biomass, was used as the biosorbent in the column studies. Experimental parameters, such as pH and flow rate of the solution, amounts of biosorbent and resin, and volume of the sample solution which affects the analytical results, were investigated. Effects of possible interfering ions on the SPE preconcentration of Sn were investigated. The sensitivity of ICP-OES was improved 47.1 times for Sn. The LOD and LOQ values were 0.06 and 0.21 ng respectively. Linearity was obtained in the concentration range of 1.0-30 ng mL(-1) for Sn. The loading capacity of Helvella leucopus immobilized Amberlite XAD-4 was 10.4 mg g(-1). The concentrations of Sn in the water samples from the Tigris River were determined using the developed method and validated by analysis of the certified reference material NWTM-26.3 Fortified Water sample.
Citation - WoS: 24
Citation - Scopus: 24
Solid Phase Extraction Based on the Use of Agaricus arvensis as a Fungal Biomass for the Peconcentrations of Pb and Al Prior to Their Determination in Vegetables by ICP-OES
(ATOMIC SPECTROSCOPY, 2013) Kilinc, E (Kilinc, Ersin); Dündar, Abdurrahman; Özdemir, Sadin; Okumuş, Veysi; 21.02. Department of Medical Services and Techniques / Tıbbi Hizmetler ve Teknikleri Bölümü; 21. Vocational School of Health Services / Sağlık Hizmetleri Meslek Yüksekokulu; 01. Mardin Artuklu University / Mardin Artuklu Üniversitesi
A solid phase extraction (SPE) method based on the use of a fungal biomass as sorbent was developed for the preconcentrations of Pb and Al. Agaricus arvensis was immobilized on Amberlite XAD-4 and loaded onto a column. Important parameters such as pH and flow rate of the solution, amount of biosorbent and resin, volume of sample solution, which affect the efficiency of the preconcentration procedure for Pb and Al, were optimized. The effect of possible interfering ions, i.e., Cd2+, Cu2+, Ni2+, Zn2+, Co2+, Na+, K+, Ca2+, Mg2+, and Fe2+, was investigated. Experiments on the repeatability of the solid phase column showed that the same column could be used at least 30 cycles without loss of the biosorption efficiency for the recovery of Pb and Al. The limit of detection (LOD) of Pb and Al was found to be 0.10 ng m(L-1) and 0.03 ng mL(-1), respectively. The sensitivity of ICP-OES improved 39.8-fold for Pb and 39.5-fold for Al. Linearity was obtained in the concentration range of 1.25-50.0 ng mL(-1) for Pb and 0.5-50.0 ng mL(-1) for Al. The relative standard deviation (RSD) of the method under optimum conditions was lower than 8.4% (n=5) for Pb and Al, which was validated through the analysis of certified reference tea and poplar leaves samples. The biosorption capacity of immobilized Agaricus arvensis for Pb and Al was found to be 31.2 mg g(-1) and 45.7 mg g(-1), respectively. The developed method was applied to determine the concentrations of Pb and Al in various edible vegetable samples (cucumber, okra, tomato, beans, aubergine, watermelon, zucchini, pepper, melon, lettuce, roka, purslane, scallion, cress, parsley, cabbage, sugar cane, and basil) grown along the cultivated banks of the Tigris River in Diyarbakir, Turkey.
Citation - WoS: 1
Citation - Scopus: 1
Trace Metal Determination in the Medicinal Plant Hyoscyamus (Solanaceae) by Inductively Coupled Plasma Optical Emission Spectrometry
(Perkin - Elmer Corp., 2014) Keskin, C.; Keskin, Cumali; Kisin, E.; Yavuz, M.; 21.02. Department of Medical Services and Techniques / Tıbbi Hizmetler ve Teknikleri Bölümü; 21. Vocational School of Health Services / Sağlık Hizmetleri Meslek Yüksekokulu; 01. Mardin Artuklu University / Mardin Artuklu Üniversitesi
The concentrations of Cd, Ni, Cu, Pb, Cr, Fe, B, and A1 were determined in four different medicinal plants of the Hyoscyamus species: Hyoscyamus reticulums L, Hyoscyamus leptocalyx STAPF, Hyoscyamus aureus L, and Hyoscyamus albus L by ICP-OES. By considering the sensitivity of ICP-OES with respect to the trace level determination of Cd, Ni, Cu, Pb, Cr, Fe, B, and Al in the studied plant samples and the limitations of sample amount possible in a microwave digestion procedure, the ashing method was applied before analysis and proved the quantitative measurements of the elements.The accuracy of the method was verified by comparison to the certified reference sample NCSZC 73014 Tea Leaves. The RSD values were between 0.14-10.4%, while the error values were in the 90-107% range. The results show that with the proposed method higher concentrations of Ni, Cr, Pb, Fe, and B were determined in H. aureus. Interestingly, the concentration of Cu in H. reticulatus was approximately 48.5 times higher than the mean Cu values of the other three Hyoscyamus species, while the Pb concentration levels in H. aureus were 17.8 times higher than in the H. reticulatus L, H. leptocalyx STAPF, and H. albus L species.

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