Rapid Comparison of UVB Absorption Effectiveness of Various Sunscreens byUV-Vis Spectroscopy
Rapid Comparison of UVB Absorption Effectiveness of Various Sunscreens byUV-Vis Spectroscopy
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利用紫外-可见光谱快速比较各种防晒霜的 UVB 吸收效果
DOI：
10.4172/2155-9872.1000355
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发表时间：
2017
期刊：
影响因子：
--
通讯作者：
Hui Doan
中科院分区：
文献类型：
--
作者：
Ju Chou;T. J. Robinson;Hui Doan
防晒霜被用来吸收或阻挡有害的阳光，特别是紫外线辐射。使用紫外可见光谱仪测量防晒产品的吸光度。同一品牌的防晒系数(SPF)为8、15、30和50的防晒霜在相同的实验条件下进行了测试。结果表明，防晒霜的紫外线吸光度和透过率与SPF值有关。使用相同品牌的防晒霜，防晒霜的最大吸光度在280至320 nm之间(UVB区域)与SPF值呈线性正比，相关系数为0.998。因此，吸光度可用于评估吸收或阻挡UVB辐射的防晒霜的效率。对几种不同品牌但SPF30相同的商业防晒霜进行了比较。结果证实，尽管相同SPF的不同品牌防晒霜在紫外线吸收方面略有不同，但它们都能提供足够的紫外线防护。研究发现，利用UV-Vis光谱来测定防晒霜的效率特别有效。
Sunscreens are used to absorb or block harmful sunlight especially ultra violet (UV) radiation. An UV-vis spectrometer was employed to measure absorbance of sunscreen products. The same brand’s sunscreens with sun protection factor (SPF) of 8, 15, 30, and 50 were tested under identical experimental conditions. The results show that the UV absorbance and the transmittance of the sunscreens are associated with the SPF value. The maximum absorbance of the sunscreens measured between 280 to 320 nm (UVB region) is linearly proportional to the SPF value with a correlation coefficient of 0.998 using the same brand’s sunscreens. Thus, the absorbance can be used to evaluate the efficiency of a sunscreen that absorbs or blocks UVB radiation. Several commercial sunscreens of different brands but with the same SPF 30 were compared. The results confirmed that, although different brand sunscreens with the same SPF varied slightly in UV absorbance, they all offer adequate protection against UVB radiation. The utilization of UV-Vis spectroscopy is found to be particularly effective for determination of sunblock efficiency.