Simultaneous determination of Cd and Zn by fluorescence spectrometry using a novel reagent and surfactants

Ertas, N
Akkaya, EU
Ataman, Osman Yavuz
A method for the simultaneous determination of zinc and cadmium with the chelating ligand 9-(1',4',7',10'-Tetraazacyclododecyl)methylanthracene using spectrofluorimetry is described. Effect of experimental variables on fluorescence intensities and on the spectral behavior of the metal-ligand in several types of surfactants have been studied, The range of application is between 2.0 and 35 mu g/L for both zinc and cadmium. The method has been applied to the determination of zinc and cadmium in real leachate samples and synthetic mixtures.


Simultaneous determination of cadmium and zinc using a fiber optic device and fluorescence spectrometry
Ertas, N; Akkaya, EU; Ataman, Osman Yavuz (2000-04-03)
A reservoir type of optode is described for simultaneous and remote determination of Cd and Zn using [9-(1',4',7', 10',13'-pentaazacyclopentadecyl)methylanthracene] as the fluorophore. Simultaneous analysis was achieved by the significant perturbation in the fluorescence spectrum of the Cd-ligand complex while the Zn complex only results in enhancement in the fluorescence intensity as compared to ligand alone. The ion permeability of several membranes were examined; Nafion and cellophane were used for the c...
Enhancement of biodegradability by continuous ozonation in Acid Red-151 solutions and kinetic modeling
Gokcen, F; Ozbelge, TA (Elsevier BV, 2005-11-15)
In this work, continuous ozonation of aqueous Acid Red-151 was performed in a stirred tank reactor at neutral pH and 25 degrees C. The results show that ozonation is capable of a rapid conversion of the Acid Red-151 dye molecule to more biodegradable intermediates up to the ozonation time of 120 min at which the optimum BOD5/COD ratio is obtained. The peak BOD5/COD ratios were found to be in the range of 0.028-0.35 for the initial dye concentrations being in the range of 1000-100 mg/L, respectively.
Synthesis of new mediators for electrochemical nad/nadh recycling
Khalily, Mohammad Aref; Demir, Ayhan Sıtkı; Department of Chemistry (2011)
The synthesis of enantiopure compounds can be achieved by using dehydrogenases as biocatalysts. For instance, reduction reactions of prochiral compounds (ketones, aldehydes and nitriles) into chiral compounds can be achieved by dehydrogenases. These dehydrogenases are cofactor dependent where cofactor is Nicotinamide Adenin Dinucleotite having some restrictions that confines usage of dehydrogenases in organic synthesis including instability of cofactor in water and high cost. Therefore, suitable recycling m...
Simultaneous production of tert-Amyl ethyl ether and tert-Amyl alcohol from isoamylene-ethanol-water mixtures in a batch-reactive distillation column
Varisli, D; Doğu, Timur (American Chemical Society (ACS), 2005-07-06)
tert-Amyl ethyl ether (TAEE) and tert-amyl alcohol (TAA), which are the attractive alternatives to methyl tert-butyl ether as octane-enhancing gasoline-blending components, are produced by the simultaneous etherification and hydration of 2-methyl-2-butene (2M2B) in a batch-reactive distillation column. It was shown that, by changing the reboiler temperature in the range of 90-124 degrees C, significant increases of the overall fractional conversion of 2M2B, reaching values of 0.99, were achieved in this sys...
Dynamic analysis of removal and selective oxidation of H2S to elemental sulfur over Cu-V and Cu-V-Mo mixed oxides in a fixed bed reactor
Yasyerli, S; Dogu, G; Ar, I; Doğu, Timur (Elsevier BV, 2004-10-01)
Selective oxidation of H2S to elemental sulfur was studied using the Cu-V and Cu-V-Mo mixed oxide catalysts with different O-2/H2S ratios between 0 and 3. High activities and high sulfur selectivities reaching 0.98 were obtained with the Cu-V catalyst. The Cu-V-Mo mixed oxide catalyst showed higher activity with a somewhat less selectivity. The Cu-V catalyst, which was originally in the form of alpha-Cu2V2O7, was converted to Cu3VS4, CuS and VOx during the initial stages of reaction. Oxidized form of the ca...
Citation Formats
N. Ertas, E. Akkaya, and O. Y. Ataman, “Simultaneous determination of Cd and Zn by fluorescence spectrometry using a novel reagent and surfactants,” QUIMICA ANALITICA, pp. 101–104, 1997, Accessed: 00, 2020. [Online]. Available: