L'�tude polarographique de l'effet des radiations ionisantes sur les solutions de prot�ines

Buruianã, L. M.; Pavlu, V.

doi:10.1007/bf00599309

Cited by 3 publications

(2 citation statements)

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“…The Brdicka test has been applied to cystine (672), 5,5-diphenyl-2-thiohydantoin, 5,5-diphenyl-2,4-dithiohydantoin, 2-thiocytosine, 2,4-dithiopyrimidine (859), -Iipoic acid (712), dimercaptopropylphthalamidic acid (143), hydroxyaldehydes, hydroxy ketones, Schiff's bases (394), corticotropin preparations [ACTH] (223), various oxytocins (713,714), serum albumin (711), denatured and deproteinized serum filtrates (124), casein fractions from cow's milk (126), tobacco mosaic virus (630), irradiated blood (384), «2-globulin fractions (313), catalase inhibitors (204), mucoproteins MP-1 (312), proteins in bean leaves (230), sera of survivors of the atomic bombing in Hiroshima (674), alkaline thioglycolate extracts of wool (291), serum mucoids (617), and toxins (475).…”

Section: Systemsmentioning

confidence: 99%

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Organic Polarography

Wawzonek¹

1962

Anal. Chem.

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Section: Systemsmentioning

confidence: 99%

“…Other studies have examined the effect of irradiation on albumin (127) and meat (536), and the effect of tri-chloroacetic acid (615), alkali (321), and glycerol ( 125) on various proteins. The applications of the Brdicka reaction to cancer have been reviewed (640).…”

Section: Systemsmentioning

confidence: 99%

Organic Polarography

Wawzonek¹

1962

Anal. Chem.

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Modification de l'Activité Polarographique des Protéines Cytoplasmatiques sous l'Action des Radiations Ionisantes

Buruianã

1964

Sci Nat

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Radioelectrochemistry. Review

Raaen¹

1974

Anal. Chem.

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In part I of this report, we described chronocoulometric measurements of lead iodide and bromide adsorptions in which discontinuities in adsorption isotherms were related to surface solubility properties of the lead halide salts. While it is tempting to try to relate those abrupt changes in Fpb to the abrupt occurrences of inhibition observed in Part II, we believe this would be an error. We regard the two sets of observations as representing two different transitions for the adsorbed lead species. It is unfortunately not possible, for solubility (of Hg(II) halides) reasons, to conduct the inhibition tests in solutions of composition yielding adsorption isotherm discontinuities. We do know, however, from data in 1.0M I* and Br" obtained in this and a preceding report (3) that no large change in Pb occurs over the inhibition transition interval for Hg(II) reduction, and that Pb is furthermore close in value to the limiting plateau Pb of adsorption isotherm in Figures 1 and 2. The inhibition results appear to tell us that at least bits and traces of further lead halide adsorption can occur beyond formation of the two-dimensional PbX2 crystal at the adsorption isotherm, which is to say that the initially formed surface phase must not represent a "perfect crystal.'' The imperfections may be small boundary openings between patches of surface crystal, intruding adsorbed halide, or possibilities for structural reorganizations which can be eliminated or accomplished, by small amounts of additional lead halide. Whatever the reason, the rather readily penetrable surface crystal formed at the adsorption isotherm discontinuity is transformed into a surface phase exceedingly impenetrable from either the solution or electrode side by species other than the Pb(II) ion itself. In the case of Pb(II), actual penetration of intact surface phase is, of course, not required since Pb(II) can pass the surface lattice by simple exchange.

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L'�tude polarographique de l'effet des radiations ionisantes sur les solutions de prot�ines

Cited by 3 publications

References 2 publications

Organic Polarography

Organic Polarography

Modification de l'Activité Polarographique des Protéines Cytoplasmatiques sous l'Action des Radiations Ionisantes

Radioelectrochemistry. Review

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