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

Abstract

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

CLC Number:

TQ658.2 +4

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.

Figures/Tables 6

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Tab. 1

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References 14

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样品编号	w（钛）/%	w（锌）/%	HRTEM图下是否观测到纳米颗粒（1~100 nm）	Ti、Zn与标签标识是否一致	样品编号	w（钛）/%	w（锌）/%	HRTEM图下是否观测到纳米颗粒（1~100 nm）	Ti、Zn与标签标识是否一致
1	9.98	4.77	是	是	26	0.290	/	否	是
2	4.81	9.90	是	是	27	2.06	/	是	是
3	6.05	2.56	是	是	28	5.90	/	是	是
4	5.26	2.52	是	是	29	7.11	5.14	是	是
5	/	18.0	是	是	30	3.93	/	是	是
6	4.12	12.8	是	是	31	/	15.6	是	是
7	0.915	7.92	是	是	32	/	16.1	是	是
8	/	3.70	是	是	33	2.75	6.09	是	是
9	11.1	3.16	是	是	34	2.38	5.57	是	是
10	13.1	1.19	是	是	35	/	9.47	是	是
11	9.94	1.08	是	是	36	/	14.5	是	是
12	5.81	/	否	是	37	6.46	6.33	是	是
13	10.7	/	是	是	38	8.84	0.720	是	是
14	/	15.3	否	是	39	0.862	/	是	是
15	/	8.47	否	是	40	2.35	9.40	是	是
16	/	16.3	否	是	41	/	13.6	是	是
17	3.06	/	是	是	42	0.038 5	/	是	是
18	6.81	8.16	是	是	43	0.081 5	/	是	是
19	/	5.89	是	是	44	7.11	/	是	是
20	1.44	/	是	是	45	5.22	/	是	是
21	1.16	/	是	是	46	3.69	/	是	是
22	3.32	11.2	是	是	47	17.9	/	是	是
23	3.73	9.42	是	是	48	3.83	5.91	是	是
24	1.38	15.7	是	是	49	1.32	/	是	是
25	5.99	/	是	是	50	0.359	/	否	是

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Determination of zinc oxide and titanium dioxide nanoparticles in imported sunscreen cosmetics

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