The change in the absorption spectra of ascorbic acid solutions, depending on their acidity

Julia Danyaeva; Svetlana Kutsenko; Natalya Kudrya

doi:10.1117/12.2564342

9 April 2020 The change in the absorption spectra of ascorbic acid solutions, depending on their acidity

Julia Danyaeva, Svetlana Kutsenko, Natalya Kudrya

Proceedings Volume 11457, Saratov Fall Meeting 2019: Optical and Nano-Technologies for Biology and Medicine; 114571H (2020) https://doi.org/10.1117/12.2564342
Event: Saratov Fall Meeting 2019: VII International Symposium on Optics and Biophotonics, 2019, Saratov, Russian Federation

Abstract

The results of investigation of the absorption spectra of ascorbic acid solutions with varying pH value are presented. The acidity of the solutions changed with increasing concentration, with the addition of hydrogen peroxide and sodium hydroxide. It was found that the position of the maximum absorption of ascorbic acid solutions depends on the pH value. The position of the absorption maxima shifts from 243 nm to 268 nm if the pH increases from 2 to 9. The change in the spectra is due to the stronger oxidation of ascorbic acid in alkaline solutions, which is accompanied by the removal of protons.

Citation Download Citation

Julia Danyaeva, Svetlana Kutsenko, and Natalya Kudrya "The change in the absorption spectra of ascorbic acid solutions, depending on their acidity", Proc. SPIE 11457, Saratov Fall Meeting 2019: Optical and Nano-Technologies for Biology and Medicine, 114571H (9 April 2020); https://doi.org/10.1117/12.2564342

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