进口防晒剂中纳米氧化锌和纳米二氧化钛检测结果分析

doi:10.3969/j.issn.1001-1803.2019.09.011

摘要/Abstract

摘要：

纳米氧化锌（nano-ZnO）和纳米二氧化钛（nano-TiO₂）作为原料被广泛应用于防晒剂中。纳米颗粒具有的特殊理化性质,可能会对人体产生潜在的风险隐患,其安全性受到广泛关注。一些防晒剂产品标签成分表中仅标识了氧化锌和/ 或二氧化钛字样,对是否属于纳米级别却没有相应标识。实验分别使用石墨炉原子吸收光谱法、紫外-可见光分光光度法对市售的50批进口防晒剂中的氧化锌、二氧化钛含量进行了定量测定。通过实验室自拟方法,采用高分辨透射电子显微镜联用能谱技术对其中添加的纳米氧化锌/纳米二氧化钛形态进行了表征。检测结果表明,50批防晒剂中氧化锌、二氧化钛含量均符合要求,44批样品观测到含有纳米颗粒,但所有样品均未对所含氧化锌、二氧化钛是否属于纳米颗粒进行标识。

关键词: 化妆品, 防晒剂, 纳米氧化锌, 纳米二氧化钛, 透射电子显微镜

Abstract:

Nanoparticles（NPs）of zinc oxide（nano-ZnO）and titanium dioxide（nano-TiO₂）have been widely used as raw materials in sunscreen cosmetics. The special physico-chemical properties of NPs may lead to potential risks to the human body, and thus their safety has received extensive attention recently. For some sunscreen cosmetics, only the words zinc oxide（ZnO）and/or titanium dioxide（TiO₂）are labeled on the composition table, and there is no information about being nano-sized or not. Quantitative analysis of ZnO and TiO₂was carried out by graphite furnace atomic absorption spectroscopy and ultraviolet-visible spectrophotometry, respectively, for 50 batches of commercial imported sunscreen cosmetics. The morphologies of the ZnO and TiO₂ NPs were characterized by a high resolution transmission electron microscope equipped with energy-dispersive X-ray spectroscopy. The results indicated that NPs were observed in 44 batches of samples among the 50 batches of samples in total. However, none of these commercial products is labeled for the existence of NPs.

Key words: cosmetics, sunscreen, nano-zinc oxide, nano-titanium dioxide, transmission electron microscope

中图分类号:

TQ658.2 +4

李硕,代静,李莉,王钢力. 进口防晒剂中纳米氧化锌和纳米二氧化钛检测结果分析[J]. 日用化学工业, 2019, 49(9): 621-626.

LI Shuo,DAI Jing,LI Li,WANG Gang-li. Determination of zinc oxide and titanium dioxide nanoparticles in imported sunscreen cosmetics[J]. China Surfactant Detergent & Cosmetics, 2019, 49(9): 621-626.

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参考文献 14

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