期刊
JOURNAL OF FOOD AND DRUG ANALYSIS
卷 26, 期 3, 页码 1192-1200出版社
FOOD & DRUG ADMINSTRATION
DOI: 10.1016/j.jfda.2018.01.010
关键词
Sunscreen powder; Nanoparticles; Titanium dioxide; Zinc oxide; Single particle inductively coupled plasma
资金
- Food and Drug Administration, Ministry of Health and Welfare in Taiwan, R.O.C. [MOHW104-FDA-N-114-000742]
Numerous consumer products, such as cosmetics, contain nanoparticles (NPs) of titanium dioxide (TiO2) or zinc oxide (ZnO); however, this raises questions concerning the safety of such additives. Most of these products do not indicate whether the product includes NPs. In this study, we characterized metal oxide NPs according to size, shape, and composition as well as their aggregation/agglomeration characteristics. In order to comprehend quickly the characterization of metal oxide NPs, we employed single particle inductively coupled plasma (SP-ICPMS) to help quantify the size of metal oxide NPs; then, we use transmission electron microscopy (TEM) to corroborate the results. The crystal size and structure was measured by X-ray diffraction (XRD), there are two crystal phase of TiO2 NPs in sunscreen powder showed in XRD. However, SP-ICPMS proved highly effective in determining the size of NPs, the results of which remarkably good agreement with the TEM measurements. Pretreatment included a conventional copper grid (requiring sample dilution) to evaluate the size, shape and composition of primary particles or plastic embedding (without the need for sample dilution) to evaluate the aggregate/aggregation of native NOAAs. The proposed method is an effective and fast approach to the characterization of oxide NPs in cosmetic sunscreen powder. These findings outline an alternative approach to the analysis of NPs in powder-form matrix. Copyright (c) 2018, Food and Drug Administration, Taiwan. Published by Elsevier Taiwan LLC. This is an open access article under the CC BY-NC-ND license.
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