Study on Fluorescence and Raman Spectral Characteristics of Lipstick
SHEN Yi-jun1, YANG Zi-chen2，3, WANG Ting-yu2，3, WANG Cheng-wei2，3, LI Lei2,3, CHEN Guo-qing2，3*
1. School of Design，Jiangnan University, Wuxi 214122, China
2. School of Science，Jiangnan University, Wuxi 214122, China
3. Jiangsu Provincial Research Center of Light Industrial Optoelectronic Engineering and Technology, Jiangnan University, Wuxi 214122, China
Abstract：With the rise of e-commerce and the explosive growth of the beauty makeup market, lipstick products’ safety become the focus of attention. In the face of the authenticity of brand lipsticks, the market detection method of cosmetics is single, and the characteristics of brand lipsticks are not targeted. In this paper, the spectral properties of a brand of true and false lipstick were studied using three-dimensional fluorescence technique and confocal Raman technique. According to the 3d fluorescence spectrum, the optimal excitation wavelength of all the five groups of lipsticks is about 320 nm, and the emission peak wavelength is about 372 nm (region Ⅰ). Among the six samples, A1, A2, A3, B1, B2 and B3, fluorescence with a central wavelength of about 400 nm will be emitted when the optimal excitation light wavelength is 230 nm. In A4, A5, B4 and B5 samples, the optimal excitation wavelength was redshifted to about 250 nm, and the fluorescence emission peak was redshifted to 450~470 nm (region Ⅱ). In addition, the optimal excitation wavelength of A5 is 550 nm, and the emission peak is near 590 nm. B1 also has a fluorescence peak excited at 270 nm and emitted around 292 nm (region Ⅲ). The relative fluorescence intensity method was used for quantitative analysis. If the fluorescence intensity of zone I was 1, the relative fluorescence intensity of zone Ⅱ and zone Ⅲ in different colors and between true and false lipsticks with the same color number were significantly different. Raman spectrum shows that there are vibration peaks of TiO2 in authentic lipstick and a large number of vibration characteristic peaks of organic functional groups such as C—C, C—N, —CH2 and —NH2. Compared with the real lipsticks, there are four specific vibration peaks in some fake lipsticks, namely 228, 447, 609 and 1 090 cm-1, which is consistent with the Raman peak of Fe2O3. The experimental results show obvious spectral differences between different lipstick colors and between true and false lipsticks of the same color.
沈奕君，杨子晨，王婷钰，王成伟，李 磊，陈国庆. 口红的荧光和拉曼光谱特性的研究[J]. 光谱学与光谱分析, 2021, 41(09): 2665-2669.
SHEN Yi-jun, YANG Zi-chen, WANG Ting-yu, WANG Cheng-wei, LI Lei, CHEN Guo-qing. Study on Fluorescence and Raman Spectral Characteristics of Lipstick. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2021, 41(09): 2665-2669.
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