منابع مشابه
The polarographic determination of selenium in urine.
Polarographicdata are presented for the reduction of selenite ion in 3M sulfuric acid, 1M potassium chloride, and 1M ammonia-ammonium chloride. In these first two media two waves are obtained correspondingto the diffusion-controlled reduction of selenite ion to selenium amalgam and the adsorption of selenite ion on the mercury drop, respectively. One wave is obtained in ammonia-ammonium chlorid...
متن کاملPolarographic Methods of Analysis
The polarographic method invented by J. Heyrovsk over 40 years ago has been associated with many successful achievements in many branches of physical and analytical chemistry, particularly in electrochemistry. Following the construction of the polarograph (with the excellent properties of Kuera's dropping mercury electrode incorporated) by Heyrovsk and Shikata, recording the current—voltage cur...
متن کاملPolarographic Behaviour and Analysis of Permethrin
The electrochemical reduction behaviour of Permethrin has been carried out, by employing d.c. polarography, cyclic voltammetry (CV) and differential pulse polarography (DPP) in the supporting electrolytes of the pH ranging from 2.0 to 12.0. The nature of electrode process was studied, the number of electrons was evaluated and the reduction mechanism was proposed. Kinetic parameters such as tran...
متن کاملPolarographic Analysis of Quetiapine in Pharmaceuticals
The voltammetric behaviour of quetiapine (QTP) was studied using direct current (DCt), differential pulse (DPP) and alternating current (ACt) polarography. The drug manifests cathodic waves over the pH range of 6 – 11.8. The waves were characterized as being irreversible, diffusion-controlled with limited adsorption properties. At pH 8, the diffusion current-concentration relationship was recti...
متن کاملAnodic polarographic determination of josamycin in formulations and spiked human urine.
The anodic polarographic behaviour of josamycin (a macrolide antibiotic) has been studied using direct current (DC(t)) polarography and differential pulse polarography (DPP). In Britton-Robinson buffers (BRb) josamycin exhibited well-defined anodic polarographic waves in the pH range 2-8. In BRb of pH 6, the diffusion-current constant was 1.62 microA mmol(-1) (n = 6). The current-concentration ...
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ژورنال
عنوان ژورنال: Review of Polarography
سال: 1963
ISSN: 0034-6691,1884-7692
DOI: 10.5189/revpolarography.11.26