Polarographische Untersuchung des Systems Cystin-Cystein I.

Grubner, O.

doi:10.1135/cccc19540444

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E the Effect Of The Adsorption Of Compounds Not Taking Part1

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Cited by 9 publications

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“…Thus, during the anodic polarization of the mercury electrode in cysteine solution, due to the RSH + Hg ~ HgRS + H+ + ereaction a compact layer is formed, inhibiting the further reversible electrode process, which appears on the polarograms as a pseudo-prewave [454]. If the temperature is increased to 90°C, the pseudo-prewave disappears, due to desorption of the HgRS layer [455]. The pseudo-prewave also disappears when a strongly adsorptive compound like dithioglycolic acid, which prevents the adsorption of HgRS particles [454], is added to the solution.…”

Section: E the Effect Of The Adsorption Of Compounds Not Taking Partmentioning

confidence: 99%

Catalytic and Kinetic Waves in Polarography

Mairanovskii¹

1968

129

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Section: E the Effect Of The Adsorption Of Compounds Not Taking Partmentioning

confidence: 99%

Catalytic and Kinetic Waves in Polarography

Mairanovskii¹

1968

129

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Polarographic Study of Thio‐Salicylic Acid

Tiwari

Kumar

1974

J. Prakt. Chem.

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The polarographic behaviour of thio‐salicylic acid (TSH) at d.m.e. has been investigated in the presence of KNO3 in the pH range 1.60 to 13.50 at 30.0 ± 0.2°C in 40% ethanol (by volume) at 0.2 M ionic strength. Well defined anodic waves were obtained at all pH values. The effect of pH, concentration of TSH, drop time, temperature and ethanol, on the wave characteristics and the mechanism of the reaction at the surface of mercury drop have been studied in detail. The reversibility of the reaction mechanism was confirmed by a number of methods. The wave was diffusion controlled, reversible involving one electron transfer process and proportional to TSH concentration. Methematical and experimental evidence shows that the anodic wave of TSH at d.m.e. does not correspond to the formation of (TSST) but to a mercury compound, TSHg. The diffusion coefficients and temperature coefficients for the range of 20–45°C of id at pH 5.70 and 9.20 have been found to be 5.248; 5.105 × 10−6 cm2 · sec−1 and 1.215, 1.127% per degree, respectively. The dissociation constant (pK) was found to be 9.80 by the plot E1/2 vs. pH. The linearity of id with TSH concentrations provides a rapid and precise method for the determination of TSH down to 0.06 mM.

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The five-membered disulphide ring system—I

Schotte

Nygård

1962

Biochemical Pharmacology

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Polarographische Untersuchung des Systems Cystin-Cystein I.

Cited by 9 publications

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Catalytic and Kinetic Waves in Polarography

Catalytic and Kinetic Waves in Polarography

Polarographic Study of Thio‐Salicylic Acid

The five-membered disulphide ring system—I

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