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Rapid Determination Method of Parabens in Cosmetics

A technology for rapid determination of hydroxybenzoic acid esters, applied in measuring devices, instruments, scientific instruments, etc., can solve the problems of high operation intensity, low analysis efficiency, and high analysis cost, and achieve low operation intensity, high analysis efficiency, and analysis low cost effect

Inactive Publication Date: 2014-10-08
GUANGXI UNIVERSITY OF TECHNOLOGY
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a rapid determination method for parabens in cosmetics, so as to solve the shortcomings of low analysis efficiency, high operation intensity and high analysis cost in the prior art

Method used

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  • Rapid Determination Method of Parabens in Cosmetics
  • Rapid Determination Method of Parabens in Cosmetics

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Embodiment 1

[0061] A rapid assay method for parabens in cosmetics, comprising the following steps:

[0062] A. Processing of samples to be tested:

[0063] Extract and filter the cosmetic sample to be tested with methanol. The specific operation is as follows: weigh 1.00 g of the sample into a stoppered test tube, add 10.0 mL of methanol to oscillate until dispersed, extract by ultrasonic wave for 15 min; rotate at 4000 rps, centrifuge for 10 min, take the supernatant and filter, A cosmetic filtrate was obtained.

[0064] B. Establishment of background spectrum database:

[0065] B1. Obtain spectral data of cosmetic samples:

[0066] The cosmetic filtrate prepared in step A is analyzed by high performance liquid chromatography, and multi-wavelength spectral data of multiple cosmetic samples are collected;

[0067] B2. Obtain the spectral data of the component to be measured:

[0068] Prepare a 10mg / L mixed methanol solution of methyl p-hydroxybenzoate, ethyl p-hydroxybenzoate, and pro...

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Abstract

A rapid determination method for parabens in cosmetics, relates to a method for determination of ingredients in cosmetics, comprising the following steps: A. processing of samples to be tested; B. establishment of a background spectrum database: B1. acquisition Spectral data of cosmetic samples; B2. Obtain spectral data of components to be tested; B3. Convert data format; B4. Obtain the spectral data of the background without the component to be tested; B5. Dimensionality reduction of the background database; C. Obtain the standard spectral database v of parabens; D. Spectral measurement of the cosmetic sample to be tested; E. To be tested Determination of parabens content in cosmetic samples. The invention has high analysis efficiency, low operation intensity, low analysis cost, no need to accumulate a background database without components to be measured, can reduce machine time and reagent loss, has good robustness, and is simple in method, and is very suitable for the analysis of large batches of samples of the same kind Rapid analytical assay.

Description

technical field [0001] The invention relates to a method for determining components in cosmetics, in particular to a method for rapidly determining preservative parabens in cosmetics. Background technique [0002] Parabens, that is, parabens, are commonly used preservatives in cosmetics, and their analysis methods are mainly chromatographic methods, including thin-layer chromatography, gas chromatography, and high-performance liquid chromatography (HPLC). and capillary electrophoresis, etc. When gas chromatography is used to determine polar substances such as hydroxyl and carboxyl, it generally needs to undergo methyl silylation and derivatization before using gas chromatography for qualitative and quantitative analysis. Therefore, it is limited in the detection of preservatives; thin-layer chromatography The method can carry out the qualitative analysis of various components, does not require special equipment, and is easy to popularize; high performance liquid chromatogra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N30/02
Inventor 粟晖姚志湘方凤陈成刘柳
Owner GUANGXI UNIVERSITY OF TECHNOLOGY
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