نتایج جستجو برای: potentiometric method

تعداد نتایج: 1632258  

2010
Rogério Adelino de Sousa Éder Tadeu Gomes Cavalheiro

A potentiometric titration method for the determination of minoxidil based on its redox reaction with K2Cr2O7 is described. The best results were observed using 1.00 x 10-3 mol L-1 K2Cr2O7 and 1.00 x 10-2 mol L-1 minoxidil solutions, and the minoxidil as titrant in 2.00 mol L-1 H2SO4 medium. The method was applied to commercial samples and compared with the results from a chromatographic proced...

2015
Elzbieta Kusmierek Ewa Chrzescijanska

Atmospheric corrosion is a significant problem given destruction of various materials, especially metals. The corrosion investigation in the industrial city environment was carried out during one year exposure. Corrosion potential was determined using the potentiometric method. The highest effect of corrosion processes was observed during the winter season due to increased air pollution. Corros...

Journal: :The Analyst 2014
Ewa Jaworska Morten Schmidt Giuseppe Scarpa Krzysztof Maksymiuk Agata Michalska

A novel fully spray coating-based method of the preparation of all-solid-state ion-selective electrodes of simplified construction is proposed. This method is an alternative for screen-printed electrodes used sometimes in potentiometric applications. The benefits of the herein-proposed approach include fully automatic sensor preparation and minimized use of chemicals allowing for the production...

Journal: :physical chemistry and electrochemistry 0
mohammad faraji faraji department of chemistry, babol branch, islamic azad university, babol, iran ali farajtabar bdepartment of chemistry, jouybar branch, islamic azad university, jouybar, iran

the protonation constant values of salicylic and 5-nitrosalicylic acid werestudied by a combinationof spectrophotometric and potentiometric methods at 25 °c in wide range of ionic strength. the ionicstrength of solutions was kept constant by sodium perchlorate as background electrolyte at 0.10 to 3.0 moldm-3. potentiometer was calibrated according to gran method at each of ionic strength. the p...

Journal: :Chemical communications 2009
Anca-Iulia Stoica Clara Viñas Francesc Teixidor

A potentiometric sensor for enantiomers has been prepared with no chiral additives, only cobaltabisdicarbollide and the protonated enantiomer.

Journal: :Fresenius' Zeitschrift f�r Analytische Chemie 1988

Here, a simple, quick, Low cost and sensitive Potentiometric method is described for tramadol hydrochloride measurement using .PVC membrane electrode based on neutral ligand (E)-N'-(1-(2-hydroxyphenyl)ethylidene)benzohydrazid. Besides, effect of various parameters like ionic additives, membrane solvent and pH on the Potentiometric response of the electrode are investigated. The best electrode p...

Journal: :Communications, Faculty Of Science, University of Ankara Series B Chemistry and Chemical Engineering 2003

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