The composition of a polymeric potential-determining phase for ketoprofen selective electrode has been determined and the following basic electrode parameters were examined: measurement range, slope characteristic, limit of detection, response time, lifetime and selectivity coefficients in relation to some organic and inorganic anions. The electrode have been used for ketoprofen determination i...

A new approach on the synthesis of Si anodes for Li-ion batteries is reported, combining advantages of both nanoparticulated and continuous Si films. A multilayered configuration prototype is proposed, comprising amorphous Si arranged in nanostructured, mechanically heterogeneous films, interspersed with Ta nanoparticle scaffolds. Particular structural features such as increased surface roughne...

A new bispyrenyl azadiene derivative has been synthesized and examined for its cation recognition abilities toward different cations. The ligand shows strong affinity for Hg(2+) ions over other cations such as Cu(2+), Pb(2+), Zn(2+), Ni(2+), Cd(2+), Ag(+), K(+), Na(+) and Li(+). An "Off-On" type of fluorescent behaviour was observed with simultaneous presence of Cu(2+) and Hg(2+) ions. An ion s...

2-amino-n-benzthioazolyl benzamide (abtb) was synthesized, characterized and used for thefabrication of a potentiometric sensor for cu2+ metal ions. the electrode exhibits linear response to cu(ii) over a wide concentration range (4.79×10 -8 – 1.85×10 -1 m) with nernstian slope of 30 ± 1.5 mvper decade. the electrode can be used in the ph range from 2 to 9. it has a fast response time of about1...

BACKGROUND/AIMS Currently available techniques for fluoride analysis are not standardized. Therefore, this study was designed to develop standardized methods for analyzing fluoride in biological and nonbiological samples used for dental research. METHODS A group of nine laboratories analyzed a set of standardized samples for fluoride concentration using their own methods. The group then revie...

Where E0 is the standard electrode potential, R is the universal gas constant, T is the absolute temperature, z is the number of moles of electrons transferred in the cell reaction or halfreaction, F is the Faraday-constant, and cox and cred are the concentrations of the oxidized and reduced forms of the component. The potential of the hydrogen electrode is declared to be 0.000 V at all tempera...

Methods for the determination of fluorine in a variety of matrices are reviewed with particular attention to those techniques which are widely adopted as routine methods. The fluoride ion-sensitive electrode is a very successful potentiometric technique for the determination of fluoride in aqueous solution and it has largely replaced the various colorimetric methods formerly used. However it is...

sol-gel and polymeric membrane electrodes, based on thiacalix[4]arene as a neutral carrier, weresuccessfully developed for the detection of vo2+ in aqueous solutions. the sol-gel and pvcmembrane electrodes exhibited linear response with nernstian slopes of 29.3 and 28.4 mv perdecade, respectively, within the vanadyl ion concentration ranges from 1.0 × 10-6 to 1.0 × 10-1mol dm-3 and from 1.0 × 1...