Burdur ilinde karayollarının yakınından toplanan bazı karayosunu örneklerinde ağır metal seviyelerinin belirlenmesi

The main sources of atmospheric heavy metals deposition are agricultural activities, fossil fuels, central heating stations and the exhaust gases of motor vehicles. In this study, the total of 29 mosses samples were collected from contaminated points near the Isparta-Antalya, Burdur-Denizli, Burdur-Afyonkarahisar, Burdur-Fethiye (Muğla) and Burdur-Antalya highways (2-20m) and uncontaminated areas in 2012. Samples were analyzed by flame and graphite furnace atomic absorption spectrometry (AAS) later microwave digestion methods. The highest accumulation levels detected as µg.g−1 Fe (1419.02)>Zn (158.44)>Mn (362.77)>Ni (109.53)>Cr (60.51)>Pb (30.38)>Cd (35.866)>Cu (25.17) for mosses. Element levels are differ depending on moss species and the location of collecting localities.Atmosferik Ağır metal birikiminin ana kaynakları, tarımsal faaliyetler, fosil yakıtlar, merkezi ısıtma istasyonları ve bölgedeki motorlu taşıtların egzoz gazlarıdır. Bu çalışmada, 2012 yılında Isparta-Antalya, Burdur-Denizli, Burdur-Afyonkarahisar, Burdur-Fethiye (Muğla) ve Burdur-Antalya karayollarının yakınından (2-20m) kirlenmiş bölgeden ve bu yollara uzak noktalardan temiz bölgeden 29 karayosunu örneği toplanmıştır. Örnekler mikrodalga çözünürleştirme sonrasında alev ve grafit fırın atomik absorpsiyon spektrometresi (AAS) metodu ile analiz edilmiştir. Karayosunları için en yüksek birikim seviyeleri µg.g−1 olarak şu şekilde tespit edildi; Fe (1419.02)>Mn (362.77)>Zn (158.44)>Ni (109.53)>Cr (60.51)>Pb (30.38)>Cd(35.866)>Cu (25.17). Element seviyesi, karayosunu türlerine ve toplanma lokalitelerinin durumuna bağlı olarak farklıdır

Evaluation of iron and zinc levels in recurrent tonsillitis and tonsillar hypertrophy

WOS: 000372213200012PubMed ID: 26954864Objectives: The aim of this study is to look into the roles of iron and zinc metals in etiopathogenesis of recurrent tonsillitis and tonsillar hypertrophy by evaluating the levels of iron and zinc elements in the palatine tonsillar tissue. Methods: In total, 40 patients who underwent a tonsillectomy to treat recurrent tonsillitis and tonsillar hypertrophy were included in the study. Patients were classified into two groups, recurrent tonsillitis and tonsillar hypertrophy, determined by the results of clinical and histopathological examination. The levels of iron and zinc elements were determined for each tonsillar tissue sample. Results: There was a significant difference in the iron and zinc concentrations (p < 0.001) between the tonsillar hypertrophy and recurrent tonsillitis groups. The levels of iron and zinc were significantly lower in the recurrent tonsillitis group. Conclusions: This study suggests that low tissue concentrations of iron and zinc may lead to recurrent tonsillitis. (C) 2016 Elsevier Inc. All rights reserved

Seasonal investigation of trace element contents in commercially valuable fish species from the Black sea, Turkey

Fish species (Sarda sarda, Mulus barbatus ponticus, Trachurus trachurus and Merlangius merlangus) were collected from the Black sea, Turkey between 2008 and 2009 (spring, summer, autumn and winter). The samples were analyzed using flame and graphite furnace atomic absorption spectrometry after microwave digestion. The maximum metal concentrations were found to be as 25.5-41.4 mu g/g (Fe), 17.8-25.7 mu g/g (Zn), 0.28-0.64 mu g/g (Pb), 0.64-0.99 mu g/g (Cr), 1.3-3.6 mu g/g (Mn), 1.4-1.9 mu g/g (Cu), 0.18-0.35 mu g/g (Cd) and 0.25-0.42 mu g/g (Co) for fish species. The concentration of trace metals in samples is depended on fish species. Some species is accumulated trace metals at high ratio. Trace element levels in analyzed fish species were acceptable to human consumption at nutritional and toxic levels. The levels of lead and cadmium in fish samples were higher than the recommended legal limits. (C) 2009 Elsevier Ltd. All rights reserved

Biosorption of heavy metals on Aspergillus fumigatus immobilized Diaion HP-2MG resin for their atomic absorption spectrometric determinations

A solid phase extraction procedure based on biosorption of copper(II), lead(II), zinc(II), iron(III), nickel(II) and cobalt(II) ions on Aspergillus fumigatus immobilized Diaion HP-2MG has been investigated. The analytical conditions including amounts of A. fumigatus, eluent type, flow rates of sample and eluent solutions were examined. Good recoveries were obtained to the spiked natural waters. The influences of the concomitant ions on the retentions of the analytes were also examined. The detection limits (3sigma, N = 11) were 0.30 mu g l(-1) for copper, 0.32 mu g l(-1) for iron, 0.41 mu g l(-1) for zinc, 0.52 mu g l(-1) for lead, 0.59 mu g l(-1) for nickel and 0.72 mu g l(-1) for cobalt. The relative standard deviations of the procedure were below 7%. The validation of the presented procedure is performed by the analysis of three standard reference materials (NRCC-SLRS 4 Riverine Water, SRM 1515 Apple leaves and GBW 07605 Tea). The procedure was successfully applied for the determination of analyte ions in natural waters microwave digested samples including street dust, tomato paste, black tea, etc. (c) 2006 Elsevier B.V. All rights reserved

Separation-preconcentration of Cu, Cd, Pb and Ni in various water and food samples on Sepabeads SP-207

This study presents a solid phase extraction (SPE) procedure for preconcentration and separation of Cu(II), Cd(II), Pb(II) and Ni(II), as their diethyldithiocarbamate chelates on Sepabeads SP-207 resin using flame atomic absorption spectrometry. The parameters, including pH, sample volume, eluent type and volume etc., were optimised. The influences of the some alkali, alkali earth and transition metal ions on the involvement of copper(II), cadmium(II), lead(II) and nickel(II) were also examined. The preconcentration factor was calculated as 50. The limit of detections of the analyte ions (k=3, N=21) were 0.18gL1 (Cu), 0.17gL1 (Cd), 0.55gL1 (Pb) and 1.67gL1 (Ni). GBW 07605 Tea and NRCC-DORM-2 Dogfish Muscle certificated reference materials were used for confirm of method. The method was successfully performed for determination of Cu(II), Cd(II), Pb(II) and Ni(II) ions in water and food samples. The relative standard deviation was found to be lower than 7%

Trace metal content in nine species of fish from the Black and Aegean Seas, Turkey

Trace metal content of nine fish species harvested from the Black and Aegean Seas were determined by microwave digestion and atomic absorption spectroscopy (MD-AAS). Verification of the MD-AAS method was demonstrated by analysis of standard reference material (NRCC-DORM-2 dogfish muscle). Trace metal content in fish samples were 0.73-1.83 mu g/g for copper, 0.45-0.90 mu g/g for cadmium, 0.33-0.93 mu g/g for lead, 35.4-106 mu g/g for zinc, 1.28-7.40 mu g/g for manganese, 68.6-163 mu g/g for iron, 0.95-1.98 mu g/g for chromium, and 1.92-5.68 mu g/g for nickel. The levels of lead and cadmium in fish samples were higher than the recommended legal limits for human consumption. (C) 2007 Elsevier Ltd. All rights reserved

Determination of trace metals in different fish species and sediments from the River Yesilirmak in Tokat, Turkey

In the presented study, five different fish species and sediment samples were collected from polluted areas, control samples from unpolluted areas in Yesilirmak River during 2008-2009. The samples were analyzed using flame and/or graphite furnace atomic absorption spectrometry after various digestion methods. The relative standard deviations (RSD) were found below 10%. The accuracy of the methods was confirmed by certified reference materials. The maximum iron, zinc, copper, lead, manganese, nickel and cadmium concentrations were found to be as 116 (Fe), 63.5 (Zn), 2.5 (Cu), 0.56 (Pb), 9.4 (Mn), 10.2 (Ni) and 0.75 (Cd) mu g/g in fish samples. The maximum metal concentration in sediment was 3566 mu g/g for Fe, 463 mu g/g for Mn, 45.5 mu g/g for Zn, 38.7 mu g/g for Cu, 17.3 mu g/g for Pb, 79.2 mu g/g for Ni and 0.55 mu g/g for Cd, respectively. Some species is accumulated trace metals at high ratio. (C) 2010 Elsevier Ltd. All rights reserved