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Identification detection method of nano titanium dioxide in sun-screening cosmetic

A nano-titanium dioxide and detection method technology, which is applied in the preparation of test samples, color/spectral characteristic measurement, material analysis using radiation diffraction, etc., can solve the problems of nano-products not forming a unity, no detection mechanism, etc., and achieve convenient operation , accurate results

Inactive Publication Date: 2012-04-18
CHINESE ACAD OF INSPECTION & QUARANTINE
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Problems solved by technology

However, there is no unified method standard for nano-products in sunscreen products to determine whether nano-level TiO is contained in sunscreen cosmetics. 2 , how to determine its shape and size, and there is no professional testing organization that can issue corresponding testing results

Method used

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  • Identification detection method of nano titanium dioxide in sun-screening cosmetic
  • Identification detection method of nano titanium dioxide in sun-screening cosmetic
  • Identification detection method of nano titanium dioxide in sun-screening cosmetic

Examples

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Embodiment Construction

[0036] For further illustrating the present invention, specifically illustrate in conjunction with following examples:

[0037] 1. Chemicals and reagents used in the examples

[0038] Hexane (AR), methanol (AR), ethanol (AR), chloroform (AR), and acetone (AR) were purchased from Beijing Chemical Plant; deionized water was obtained from Mili-Q ultrapure water preparation equipment in the United States.

[0039] 2, the instrument that adopts in the embodiment

[0040] The plasma emission spectrometer was purchased from Varian Company 715-ES;

[0041] The X-ray fluorescence spectrometer is the QUANT'X type of Thermo Company;

[0042] Scanning electron microscope S-4800 was purchased from Hitachi;

[0043] Transmission electron microscope, Japan Electronics JEM-2011 type;

[0044] Nicholas iN10 infrared microscope, purchased from American Thermoelectric Company;

[0045] The Tristar3000 automatic specific surface area and pore analyzer was purchased from American Mike Company...

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Abstract

The invention provides an identification detection method of nano titanium dioxide in a sun-screening cosmetic. According to the invention, X-ray diffraction (XRD) analysis, scanning electron microscope (SEM) analysis, transmission electron microscope (TEM) analysis, nitrogen adsorption / desorption Brunauer-Emmett-Teller (BET) analysis and infrared ultraviolet spectral analysis are utilized to identify crystal structure, crystal microstructure characteristics, crystal form, particle dimension, distribution, specific surface area, atom site occupation and absorption and reflection capabilities on ultraviolet ray of a nano material; and elemental analysis of inductively coupled plasma (ICP), X-ray fluorescence spectrum, thermogravimetric (TG) analysis and EDS are used as assistant measures to carry out quantitative analysis on titanium dioxide in a product. According to comprehensive analysis on crystal form, particle dimension, distribution, specific surface area, atom site occupation and absorption and reflection capabilities on ultraviolet ray of the nano material, a comprehensive identification detection of nano titanium dioxide in sun-screening cosmetic is established.

Description

technical field [0001] The invention relates to the technical field of chemical substance detection, in particular to a detection method for sunscreen cosmetics containing nano-titanium dioxide. Background technique [0002] Sunscreens, also known as sunscreens, can be divided into physical blocking agents and chemical absorbents according to their protective mechanism. In sunscreen cosmetics, most of the sunscreen agents adopted in the early stage are organic substances, which can only shield UVB, and also have certain toxicity and chemical sensitivity problems. With the development of nanotechnology, nano sunscreens have fully demonstrated their superiority in terms of active ingredients and carriers. The active ingredients in sunscreen cosmetics are specially processed into extremely tiny structures at the nanoscale, and combined with various new nanocarrier systems, the sunscreen effect can be greatly enhanced and have some novel properties. Nano TiO used in sunscreen ...

Claims

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Application Information

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IPC IPC(8): G01N1/28G01N23/20G01N21/35G01N23/22
Inventor 闫妍李俊芳卢晓静杨海峰
Owner CHINESE ACAD OF INSPECTION & QUARANTINE
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