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Issue 5, 2017
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Quantum yield for the photo-degradation of vitamin D3

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Abstract

Ultraviolet radiation can photodegrade vitamin D3 to suprasterol I, superasterol II and 5,6-transvitamin D3. The probability of the photodegradation of vitamin D3, after the absorption of one photon, is called the quantum yield. We estimated the quantum yield ϕ for all the degeneration reactions together on the basis of the results reported by Webb et al. (1989) for a degradation experiment on pure, tritiated vitamin D3 in methanol in sunlight. We find ϕ = (0.42 ± 0.1). This value of the quantum yield can be used to estimate the kinetics contribution from vitamin D3 degradation in exposure experiments and model calculations.

Graphical abstract: Quantum yield for the photo-degradation of vitamin D3

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Publication details

The article was received on 27 Oct 2016, accepted on 26 Feb 2017 and first published on 27 Feb 2017


Article type: Paper
DOI: 10.1039/C6PP00393A
Citation: Photochem. Photobiol. Sci., 2017,16, 690-693
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    Quantum yield for the photo-degradation of vitamin D3

    A. van Dijk, Photochem. Photobiol. Sci., 2017, 16, 690
    DOI: 10.1039/C6PP00393A

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