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Method for preparing standard substance for detecting heavy metal in cosmetics

A standard substance and preparation method technology, applied in the direction of cosmetic preparations, cosmetics, cosmetics, etc., can solve problems affecting accuracy and achieve accurate detection results

Active Publication Date: 2012-02-22
SHANGHAI INOHERB COSMETIC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in practical applications, the detection of heavy metals in cosmetics mixed with formula ingredients is quite different from the direct detection of compounds, which will affect the accuracy of detection

Method used

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  • Method for preparing standard substance for detecting heavy metal in cosmetics
  • Method for preparing standard substance for detecting heavy metal in cosmetics
  • Method for preparing standard substance for detecting heavy metal in cosmetics

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] According to the formula and preparation process in the table, it is formulated into a cosmetic emulsion. The heavy metal chromium is formulated into an aqueous solution of 0.1mg / mL, and then the aqueous solution containing heavy metal chromium is slowly added to the cosmetic emulsion, and the final concentration of chromium in the standard substance reaches 5ppm, and the temperature is kept constant at about 20°C and minimum moisture Stir slowly under evaporating conditions and dispense.

[0036] The purity of heavy metal chromium is 1000 ug / mL, provided by Bailingwei Chemical Technology Co., Ltd.

Embodiment 2

[0038] According to the formula and preparation process in the table, it is formulated into a cosmetic emulsion. The heavy metal neodymium is formulated into an aqueous solution of 0.1mg / mL, and then the aqueous solution containing heavy metal neodymium is slowly added to the cosmetic emulsion, and the final concentration of neodymium in the standard substance is reached to 5ppm, and the temperature is kept constant at about 20°C and minimum moisture Stir slowly under evaporating conditions and dispense.

[0039] The purity of heavy metal neodymium is 1000 ug / mL, provided by Bailingwei Chemical Technology Co., Ltd.

[0040] The standard substance of the present invention is used to detect the uniformity of heavy metals in cosmetics:

[0041] Uniformity is the most basic attribute of reference materials. According to the "Guidelines for Standard Sample Work (5): Technical Guidelines for Standard Samples of Chemical Composition" (GB / T15000.9-94), n bottles of the developed reference m...

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Abstract

The invention relates to a method for preparing a standard substance for detecting heavy metal in cosmetics. The aqueous solution of the heavy metal and cosmetic emulsion are mixed to form the standard substance, wherein the cosmetic emulsion comprises the following components in percentage by weight: phase A: 68 to 72 percent of deionized water, 4.5 to 5.5 percent of glycerol, 3 to 3.5 percent of propylene glycol and 0.45 to 0.5 percent of xanthan gum; phase B: 4 to 4.5 percent of stearate, 2 to 4 percent of cetostearyl alcohol and 10 to 14 percent of No.26 white oil; and phase C: 1.25 to 1.3 percent of phenoxy ethanol and ethyl hexyl glycerin; and the concentration of the heavy metal in the standard substance is 5ppm. The method has the advantages that: a heavy metal compound and the cosmetic emulsion are mixed to form the standard substance for detecting the heavy metal chromium and neodymium in the cosmetics; and the standard substance is the same as a heavy metal-containing cosmetic sample in actual use, so that the detection of the heavy metal in the cosmetics better accords with the state of the actual application, and the detection is more accurate.

Description

Technical field [0001] The invention relates to the field of cosmetics detection, in particular to a method for preparing standard substances for detecting heavy metals in cosmetics. Background technique [0002] The detection of heavy metals in cosmetics is one of the important safeguards for the safety of cosmetics. At present, more direct compound detection methods are used. However, in practical applications, after the heavy metals in cosmetics are mixed with formula ingredients, there is a big difference between the detection and the direct detection of compounds, which will affect the accuracy of the detection. Compared with standard compounds, cosmetic standard substances not only have accurate measurement standards, but also have one or more sufficiently uniform and well-determined characteristic values, with traceability of the value, which is useful for improving cosmetic production, The detection level of cosmetics inspection, uniform measurement values, evaluation of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61K8/92A61K8/19A61K8/06A61Q1/00A61Q17/00A61Q19/00
Inventor 陈黎明胡国胜
Owner SHANGHAI INOHERB COSMETIC