The oxidases and other oxygen - catalysts concerned in biological oxidations / by J. H. Kastle.

  • Kastle, Joseph H. (Joseph Hoeing), 1864-1916.
Date:
[1910]
Catalogue details

Licence: In copyright

Credit: The oxidases and other oxygen - catalysts concerned in biological oxidations / by J. H. Kastle. Source: Wellcome Collection.

    44/168 (page 42)
    Tn'he blZl 'I?™ “T “ L high <Iegree P*»hb that there exist the blood of animals substances having the power to change the piled inactive oxygen in a similar way to that accomplished by phosphorus and oil of bitter almonds-that is, substances which n the'lifr T T*1 Therfy phenomena observed n the life cycle are brought about. He adds, further, that without ie presence of such substances as convert (0) into 6 the animal would he suffocated in the midst of an ocean of the purest but inactive oxygen as quickly as it would be in a vacuum. ’ ’ Schoenbem’s remarkable observations in this field, however, did ot end here. From Ins extended investigations on ozone and hydro- gen peroxide he had reached the conclusions that oxygen can exist in three forms, viz common oxygen, which he represented by O or (O), ozone, 0or 0), and antozone, ©or (©); and that deriving from these thiee modifications of oxygen, respectively, we have three classes of oxides, viz, (1) ordinary oxides, such as water; (2) ozonides, which included most if not all of the peroxides of the heavy metals such as manganese dioxide and lead peroxide, and (3) antozonides,’ like hydrogen peroxide and barium dioxide u 0 © PIO (old formula), MnO+ 0, H© + ©. Ca°, PbO + 0, BaO + ©, Of these several forms of oxygen, the ozonic modification was the most active. He had observed, further, that just as the common oxy- gen is transformed into ozone through the influence of ozonizers, such as phosphorus, platinum, etc., so the oxygen of the antozonides ©may be transformed into the ozonic modification, 0, by the action of certain substances such as platinum or lead salts, etc., and that finally as a result of the neutralization of their electrically opposite potentials, an ozonide reacts with an antozonide with the production of common oxygen. Thus ozone and hydrogen peroxide give rise to common oxygen and water: 0 + FIO + © = H0+20. He found, for example, that guaiacum blue results from the action of finely divided platinum on tincture of guaiacum and air or hydrogen peroxide, whereas neither of these substances can effect this alteration in the color of the guaiacum, or can do so only with extreme slowness, when used alone. It had been previously observed by Thenard that hydrogen peroxide is decomposed by finely divided platinum into water and common oxygen. All of these facts found a simple expla- nation in terms of Schoenbem’s theory. According to this theory, - neither common oxygen nor antozone nor an antozonide can blue guaiacum, for the reason that the resin only combines with the ozonic