Université de Perpignan Via Domitia, BAE, 52 Avenue Paul Alduy, F-66860, Perpignan Cedex, France; Sorbonne Université, CNRS, Laboratoire de Biodiversité et Biotechnologie Microbienne, USR3579, Observatoire Océanologique, Banyuls-sur-Mer, France.
Sorbonne Université, CNRS, Laboratoire de Biodiversité et Biotechnologie Microbienne, USR3579, Observatoire Océanologique, Banyuls-sur-Mer, France.
Talanta. 2022 Dec 1;250:123728. doi: 10.1016/j.talanta.2022.123728. Epub 2022 Jul 8.
This study focuses on the spectroelectrochemical quantification of four UV filters, butylmethoxy dibenzoylmethane (BM), benzophenone-3 (BP3), ethylhexyl methoxycinnamate (EM) and octocrylene (OC) used as sunscreens in cosmetics. Three of them exhibited electrochemical activity resulting in the modification of their absorption spectrum under the application of an oxidizing potential of +1.8 V vs. Ag. When working with a mixture containing both electroactive and nonelectroactive UV filters, UV-vis absorption spectra recorded before and after the application of the potential differed. The combination of spectral deconvolution of the spectra pair allowed a more accurate identification and quantification of UV filters than spectral deconvolution of the initial absorbance spectrum alone. This method was effective for the assessment of UV filters in model mixtures and commercial sun creams.
本研究专注于四种紫外线滤光剂的光谱电化学定量分析，这些滤光剂分别为丁基甲氧基二苯甲酰甲烷（BM）、二苯酮-3（BP3）、乙基己基甲氧基肉桂酸酯（EM）和奥克立林（OC），它们被用作化妆品中的防晒霜。其中三种紫外线滤光剂具有电化学活性，在施加+1.8 V 相对于 Ag 的氧化电势时，其吸收光谱会发生变化。当处理含有电活性和非电活性紫外线滤光剂的混合物时，施加电势前后记录的紫外可见吸收光谱会有所不同。对光谱对进行光谱解卷积的组合比单独对初始吸光度光谱进行光谱解卷积更能准确地识别和定量紫外线滤光剂。该方法可有效评估模型混合物和商业防晒霜中的紫外线滤光剂。
