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Method for concurrent measurement of p-phenylenediamine, o-phenylenediamine, hydroquinone and resorcinol in oxygenize type hair dyes agent

A technology of o-phenylenediamine and resorcinol, which is applied to the simultaneous determination of four dyes of resorcinol, o-phenylenediamine and p-, oxidative hair dyes, can solve the problem that the four dyes cannot be detected at the same time, Problems such as high analysis cost and high detection cost achieve the effect of low detection limit, high analysis cost and time saving

Inactive Publication Date: 2009-09-30
中华人民共和国苏州出入境检验检疫局
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a method for the simultaneous determination of p-, o-phenylenediamine, p-, and resorcinol in oxidative hair dyes, which solves the problem that the four dyes cannot be detected simultaneously in the prior art and the detection cost is relatively high. High, high analysis cost, limited use, etc.

Method used

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  • Method for concurrent measurement of p-phenylenediamine, o-phenylenediamine, hydroquinone and resorcinol in oxygenize type hair dyes agent
  • Method for concurrent measurement of p-phenylenediamine, o-phenylenediamine, hydroquinone and resorcinol in oxygenize type hair dyes agent
  • Method for concurrent measurement of p-phenylenediamine, o-phenylenediamine, hydroquinone and resorcinol in oxygenize type hair dyes agent

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The detection of four kinds of oxidized dyes in the hair dye of embodiment 1:

[0037] Reagents and samples

[0038] Anhydrous sodium sulfite (analytical grade), ethyl acetate (HPLC), o-phenylenediamine, p-phenylenediamine, hydroquinone, resorcinol standard: purity ≥ 99%;

[0039] Instruments and Equipment

[0040] Gas chromatograph Agilent 6890N (FID), chromatographic column J&W 123-0732 DB-170130m*0.32mm*0.25μm, ultrasonic cleaner, centrifuge, 0.45μm organic microporous membrane, 1.0μL micro-sampler

[0041] method:

[0042] Chromatographic conditions

[0043] Start the chromatographic instrument and make necessary adjustments to achieve the best working conditions of the instrument. The chromatographic conditions are selected according to specific conditions. The reference conditions are:

[0044] (1) Carrier gas nitrogen flow rate: 1.0mL / min; hydrogen flow rate: 30mL / min; air flow rate: 350mL / min.

[0045] (2) Inlet temperature: 250°C

[0046] (3) Injection mo...

Embodiment 2

[0066] The precision and recovery rate investigation of embodiment 2 detection method

[0067] Method precision

[0068] Take 0.2 μL of 200 and 1000 μg / mL standard solutions of p-phenylenediamine, o-phenylenediamine, hydroquinone, and resorcinol for analysis, repeat 7 times, and calculate the relative standard deviation (RSD). The height of the four compounds The RSDs of the two concentrations are 1.7%-4.6%, the results are shown in the table

[0069] Table 1 Precision test results (n=7)

[0070]

[0071] The recovery rate investigation of the method:

[0072] Take L'Oreal cream and liquid hair dyes, measure the samples, add 1000μg / mL standard solution respectively, and pretreat them according to the pretreatment steps, analyze according to the chromatographic analysis conditions, inject samples in parallel 3 times, and measure The sample recoveries ranged from 87.5% to 107.7%, and the results are shown in Table 2.

[0073] Table 2 Hair dye recovery test results (n=3) ...

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Abstract

The invention provides a method for concurrent measurement of p-phenylenediamine, o-phenylenediamine, hydroquinone and resorcinol in oxygenize type hair dyes agent, which includes hereafter steps: (1) confecting standard product solution of different coloring agent and differentmultiplying power content, (2) confecting the solution of need-checking sample, (3) respectively accurately extracting standard product solution and need-checking sample solution, injecting into the gas chromatography and taking measurement. In this invention, the fore treatment of the sample in this invention is easy, can save time and be easy to operate by employing capillary column, can synchronously detect the four oxygenize type coloring agent, can take quantitative analysis and reduce the cost, and has the feature of quick detecting.

Description

technical field [0001] The invention belongs to the technical field of chemical instrument analysis, and relates to a method for simultaneously measuring four dyes of p- and o-phenylenediamine and p- and resorcinol in oxidative hair dyes. Background technique [0002] Hair dye is a cosmetic product that dyes the hair. According to the People's Republic of China Light Industry Standard QB / T 1978-2004 "Hair Dye", hair dyes can be divided into oxidative hair dyes and non-oxidative hair dyes according to the dyeing principle. [0003] Oxidative hair dye, as a permanent hair dye, is the mainstream product on the market. The principle is that it uses low molecular weight dye intermediates, such as p-phenylenediamine and p-aminophenol. These dye intermediates themselves are colorless and cannot be used alone. When they are mixed with a color developer, they are oxidized to generate quinone imine (P-benzoquinoneimine), and then react with a pseudo-carbanion coupler to generate dip...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02G01N30/06G01N30/30G01N30/60
Inventor 吴晓明余雯静郑利石建华
Owner 中华人民共和国苏州出入境检验检疫局
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