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نمایش تعداد 1-10 از 15
Complexation Ability of Dibenzo-24-crown-8 with Cs+ Cation in Binary Mixed Non-Aqueous Solvents
The complexation reaction of macrocyclic ligand, dibenzo-24-crown-8 (DB24C8) with Cs+ cation was studied in acetonitrile-methanol(AN-MeOH), acetonitrile-ethanol (AN-EtOH), acetonitrile-dimethylformamide(AN-DMF) and ...
complaxation of 4-nitrobenzo-15-crown-5 with Zn2+ , Mn2+ , Cr3+ and Sn4+ cations in acetonitrile-ethanol binary mixture
macrocyclic crown ethers [1] are widely used as a promising separating agent [2] because of their excellent ability as a neutral host for selective charged metal ions in its narrow cavity in various non equeous solvents .
stability of dibenzo-18-crown-6 complexes with Ce3+ , Y3+ , UO22+ and Sr2+ cations in acetonitrile-Dimethylformamide binary solutions.
crown ethers noted fot their remarkable selectivity towards specific cations making them excellent choices for the separation of desired ions from mixture by solvent extraction and membrane transport [1,2].
Study of competitive transport of some heavy metal cations across bulk liquid membranes containing phenylaza-15-crown-5 and cryptand 222 as carriers using flame atomic absorption spectrometry
In this study, a competitive transport procedure was used for transport process of Cr(III), Cu(II),
Co(II), Cd(II), Ag(I), Pb(II), and Zn(II) metal cations across bulk liquid membrane (BLM) using phenylaza-
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Voltammetric paracetamol sensor using a gold electrode made from a digital versatile disc chip and modified with a hybrid material consisting of carbon nanotubes and copper nanoparticles
A composite consisting of carbon nanotubes (CNT) and copper nanoparticles (CuNPs) was prepared by a chemical reduction method, and its structure characterized by scanning electron microscopy, transmission electron microscopy ...
Electrochemical Sensor Based on TiO2 Nanoparticles/Nafion Biocompatible Film Modified Glassy Carbon Electrode for Carbamazepine Determination in Pharmaceutical and Urine Samples
In the present research work, voltammetric technique was applied for quantitative measurement of carbamazepine (CBZ) in solutions using a glassy carbon electrode (GCE) modified by titanium oxide nanoparticles (TiO2NPs) and ...
A novel disposable sensor based on gold digital versatile disc chip modifed with graphene oxide decorated with Ag nanoparticles/β-cyclodextrin for voltammetric measurement of naproxen
A novel disposable electrochemical sensor was constructed from a gold digital versatile disc -G-DVD- modified with graphene oxide decorated with Ag nanoparticles and β-cyclodextrin -AgNPs@GO-β-CD- for quantitative measurement ...
Competitive transport of heavy metal cations across bulk liquid membranes containing phenylaza-15-crown-5 and cryptand 222 as carrier by flame atomic absorption spectrometry
Liquid membranes represent an important tool in separation science. Compared with solvent extraction, liquid membranes have shown great potential since
they combine the process of extraction and stripping in a single ...
Spectrometric determination of silver ions after selective bulk liquid membrane transport using phenylaza-15-crown-5 as carrier
Selective transport of cationic substrates by membrane carriers is of great importance in chemistry, biology, and separation sciences. Compared with
conventional separation processes, such as liquid-liquid extraction, ...
thermodynamics of ZrO2+ cation complexation with dibenzo-18-crown-6 in mixed nonaqueous solvents
since the time pedersen published the first report on crown compounds in 1967,[1] these compounds have been considered for a wide rang of applications including enzyme models, biophysics and medicine [2].