Comparison of accumulation capacities of two lichen species analyzed by instrumental neutron activation analysis

Yenisoy-Karakas, S
Tuncel, Süleyman Gürdal
Instrumental neutron activation analysis and ICP-OES were used to determine 3 8 elements in two lichen species namely Xanthoria parietina (L.) Th. Fr. and Parmelia tiliacea (Hoffm) Ach. which were collected in Aegean Region of Turkey. It was found that the accumulation capacities of two species differed only for the elements Ca, Cl, Cu and Pb by using ANOVA at 95% confidence level. Average concentrations of all elements except for Ba, Mn and Hg were higher in Parmelia tiliacea. For the elements Ba, Br, Co, Cr, Cs, Fe, K, Mg, Mn, Mo, Rb, Sb and Ti, the equation y - ax+b could be used to make interchangeability possible between two species.


Estimation of silica scaling temperatures of Kizildere geothermal field effluent, Turkey
Ariturk, S; Parlaktuna, Mahmut (2001-07-01)
A computer program, SPECIATION, was developed to deter-mine the detailed composition of an aqueous solution and the concentrations and activities of all species. Once the detailed composition of an aqueous solution is known, it is possible to determine the saturation level of the solution with respect to any mineral, which is silica for this study.
Multivariate statistics to investigate metal contamination in surface soil
YAY, OZAN DEVRİM; Alagha, Omar; Tuncel, Süleyman Gürdal (2008-03-01)
The modification of soil composition in the urbanized area of Ankara due to wet-dry deposition and pollution-derived particles from the atmosphere is investigated by analyzing 120 surface soil samples, collected from the urbanized area and its un-urbanized surrounding, for major, minor and trace elements. Concentrations of elements from human activity (e.g. Cd, Pb, Cr, Zn, Cu and Ca) in the urbanized area were higher than their corresponding concentrations in global average soil and soil in un-urbanized are...
Investigation of HMO spectra of Huckel and Mobius type cyclacenes
Turker, L; Erkoç, Şakir (1997-01-01)
The Huckel molecular orbital spectra (HMO) of Huckel- and Mobius-type cyclacenes having 3-15 benzenoid rings were investigated and it was found that certain eigenvalues are topologically invariant, whereas others exhibit topological periodicity. Fbr example, Huckel-type cyclacenes having 2r (r: 2,3,4,...) benzenoid rings which possess nonbonding molecular orbitals (NBMO) and are thus expected to be open shell structures.
Beşikci, Cengiz; Labeyrıe, G; Bıgan, E; Razeghı, M; Cohen, Jb; Carsello, J; Dravıd, Vp (1994-11-15)
InAs0.3Sb0.7 layers with mirrorlike morphology have been grown on GaAs substrates by low‐pressure metalorganic chemical vapor deposition. A room‐temperature electron Hall mobility of 2×104 cm2/V s has been obtained for a 2‐μm‐thick layer. Low‐temperature resistivity of the layers depended on TMIn flow rate and layer thickness. Hall mobility decreased monotonically with decreasing temperature below 300 K. A 77 K conductivity profile has shown an anomalous increase in the sample conductivity with decreasing t...
Synthesis and characterization of thiophene functionalized polystyrene copolymers and their electrochemical properties
Sahin, E; Camurlu, P; Toppare, Levent Kamil; Mercore, VM; Cianga, I; Yagci, Y (Wiley, 2005-12-01)
Thiophene functionalized polystyrene samples (TFPS) were synthesized by atom transfer radical polymerization (ATRP) of styrene, followed by Suzuki coupling with 3-thiophene (Th) boronic acid. Conducting graft polymer of TFPS with thiophene was achieved at 1.5 V in tetrabutylammonium tetrafluoroborate/dichloromethane (TBAFB/DM) by electrochemical methods. Spectroelectrochemical analysis of the resulting copolymers [P(TFPS-co-Th)] reflected electronic transitions at 449, 721 and 880 nm, revealing pi - pi* tra...
Citation Formats
S. Yenisoy-Karakas and S. G. Tuncel, “Comparison of accumulation capacities of two lichen species analyzed by instrumental neutron activation analysis,” JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY, pp. 113–118, 2004, Accessed: 00, 2020. [Online]. Available: