Licht-im-Terrarium: Literaturdatenbank
Licht-im-Terrarium: Literaturdatenbank |
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Terenetskaya, I. P. (2008). Limitations of the photostationary approximation in the photochemistry of provitamin d: The ambiguous role of the irreversible degradation channel. Theoretical and Experimental Chemistry, 44(5), 286–291. Added by: Sarina (2017-01-20 15:54:17) |
| Resource type: Journal Article DOI: 10.1007/s11237-008-9043-8 ID no. (ISBN etc.): 1573-935X BibTeX citation key: Terenetskaya2008 View all bibliographic details  |
Categories: Englisch = English Creators: Terenetskaya Collection: Theoretical and Experimental Chemistry |
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Meine Sichtweise (Keine vollständige Zusammenfassung des Artikels! Meine Meinung muss nicht mit der Meinung der Autoren übereinstimmen! Bitte lesen Sie auch die Originalarbeit!)
Enthält Absorptionsspektren von 7DHC, preD3, Lumsteril, Tachysterol sowie Quanteneffizienzen φ12 = 0.26 7DHC → preD3 Added by: Sarina Last edited by: Sarina |
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The limitations of the generally accepted photostationary approximation in the photochemistry of provitamin D resulting from the strong spectral dependence of the effectiveness of the irreversible channel were established theoretically by a simplified model. The results show clearly that disregard of the irreversible channel with low quantum yield in a system of reversible photochemical reactions over a wide spectral range is not always justified. As a result the approximation according to which the concentration of the main photoisomers of provitamin D is constant only holds in a specific region of the spectrum, and this must be taken into account during concentration analysis of the photoisomeric mixture.
Added by: Sarina |