Method for detecting soluble zinc salt in cosmetic by ultrasound centrifugal-ICP-OES

An -ICP-OES, cosmetics technology, applied in the field of detection of soluble zinc salt content in cosmetics, can solve the problems of cumbersome operation and processing steps, no query, poor reproducibility, etc., to achieve strong specificity, protect human health, The effect of improving the recovery rate

Inactive Publication Date: 2010-09-29
THE INSPECTION & QUARANTINE TECH CENT ZHEJIANG ENTRY EXIT INSPECTION & QUARANTINE BUREAU
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are very few literatures published in China, mainly flame atomic absorption method and micellar sensitization photometry, but there are problems of cumbersome operation and processing steps, low sensitivity, poor stability and reproducibility
At present, there is no literature report on the determination of soluble zinc salt content in cosmetics by ultrasonic centrifugation-ICP-OES detection technology

Method used

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  • Method for detecting soluble zinc salt in cosmetic by ultrasound centrifugal-ICP-OES
  • Method for detecting soluble zinc salt in cosmetic by ultrasound centrifugal-ICP-OES
  • Method for detecting soluble zinc salt in cosmetic by ultrasound centrifugal-ICP-OES

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] 1. The use of equipment and equipment conditions

[0032] 1.1 Instrument used: Inductively Coupled Plasma-Atomic Emission Spectrometer (ICP-OES), model: VARIAN720ES.

[0033] 1.2 Instrument working conditions, see Table 1.

[0034] Table 1. Reference working conditions of the instrument

[0035] project

Working parameters

Detector

Vista Chip CCD

transmit power, W

1200

Working frequency, MHz

40

Plasma gas flow, L / min

15.0

Auxiliary gas flow, L / min

1.50

Atomizing gas flow, L / min

0.60

Integration time, s

6

Number of points

3

Analytical wavelength of the element to be measured, nm

Zinc 213.857, Indium 230.606

[0036] 2. Use reagents:

[0037] 2.1 The reagents used are of superior grade, and the experimental water is the first-grade water specified in GB / T6682.

[0038] 2.2 Nitric acid (ρ1.42g / mL).

[0039] 2.3 Zinc standard stock solution: use n...

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Abstract

The invention relates to a method for detecting the content of soluble zinc salt in cosmetic, in particular to a method for detecting the content of soluble zinc salt in cosmetic by an ultrasound centrifugal-inductively coupled plasma atomic emission spectrometry detection technology, which comprises the following steps: extracting cosmetic samples through ultrasound centrifugal, introducing the sample solution into an inductively coupled plasma atomic emission spectrometer nebulizer to form aerosol, loading the aerosol into a high-temperature high-frequency plasma by argon, causing ionization, generating characteristic lines, detecting line intensity of zinc in the sample solution, wherein the intensity and content of zinc are directly proportional, correcting response value of zinc according to the specific value of an actual-measurement indium internal standard response value and a predicted indium internal standard response value, adopting a calibration curve method for quantitative detection, and calculating the content (calculating by zinc) of the soluble zinc salt in the cosmetic. The invention has the characteristics of strong specificity, high sensitivity and correct result.

Description

technical field [0001] The invention relates to a method for detecting the content of soluble zinc salt in cosmetics, in particular to a method for detecting the content of soluble zinc salt in cosmetics by using ultrasonic centrifugal-inductively coupled plasma atomic emission spectrometry (ICP-OES) detection technology. Background technique [0002] With the upgrading of consumption level, my country's cosmetics industry has maintained an average annual growth rate of more than 15%, and has become the second largest cosmetics production and sales country in Asia and the seventh in the world. The safety of cosmetics has also attracted more and more global attention. In recent years, with the continuous emergence of newly synthesized and newly discovered chemical substances, the growth rate of prohibited and restricted substances is very fast. However, the growth of accurate quantitative detection methods cannot adapt to the growth rate of prohibited and restricted substance...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/73
Inventor 戴骐吴艳燕林晓娜陈笑梅朱海强
Owner THE INSPECTION & QUARANTINE TECH CENT ZHEJIANG ENTRY EXIT INSPECTION & QUARANTINE BUREAU
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