Method for determining content of azodicarbonamide in leather by HPLC (high performance liquid chromatography)

A technology of azodicarbonamide and high-performance liquid chromatography, which is applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of no detection method, difficulty of detection, unusability, etc., and achieve good economic and social benefits, advanced Ease of handling and minimal matrix interference

Inactive Publication Date: 2018-04-17
泰州市产品质量监督检验中心 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the current process and technology, it is still difficult to control and ensure that the content in leather products does not exceed the limit. Since azodicarbonamide was included in the SVHC list of substances of very high concern in the EU REACH Annex, it has been exported to foreign countries in the past two years The leather and its products are required to test the azodicarbonamide project
[0004] However, the key problem of the current regulatory difficulty is that there is no detection method, and there are very few domestic studies on the determination of ADC residues in leather, mainly due to the properties of

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  • Method for determining content of azodicarbonamide in leather by HPLC (high performance liquid chromatography)
  • Method for determining content of azodicarbonamide in leather by HPLC (high performance liquid chromatography)
  • Method for determining content of azodicarbonamide in leather by HPLC (high performance liquid chromatography)

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Embodiment Construction

[0028] The present invention will be further elaborated below in conjunction with the accompanying drawings and specific embodiments.

[0029] 1. Determination of the content of azodicarbonamide blank solution in leather by high performance liquid chromatography

[0030] 1. Prepare a blank solution: take an appropriate amount of leather without azodicarbonyl, weigh it accurately, add 40mL of dimethyl sulfoxide, put it in a 50mL volumetric flask, extract it by ultrasonic for 30min, let it cool down, add dimethyl sulfoxide to volume , filtered with a 0.45µm filter membrane, which is a blank sample;

[0031] 2. Determination by high performance liquid chromatography:

[0032] The above-mentioned blank sample was subjected to high-performance liquid chromatography determination, and the chromatographic conditions were: chromatographic column: hydrophilic column HILIC 250mm×4.6mm, 5µm; column temperature: 30°C; mobile phase: volume of acetonitrile: volume of water=60-70 : 40-30V / ...

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Abstract

The invention discloses a method for determining the content of azodicarbonamide in the leather by HPLC (high performance liquid chromatography). The method comprises the following steps: step 1, preparing three samples; step 2, performing HPLC determination on the three solutions prepared in step 1 under the condition of HPLC. With adoption of the method, detection of the content of azodicarbonamide in leather can be well controlled, health and safety of consumers are guaranteed, pretreatment is simple, and the method can be used for accurately detecting the content of azodicarbonamide in theleather.

Description

technical field [0001] The invention relates to a method for determining the content of azodicarbonamide in leather by high performance liquid chromatography. Background technique [0002] Azodicarbonamide, referred to as AC foaming agent or ADC foaming agent, is suitable for a variety of resins, such as PVC, PE, EVA, EPDM, PS, PU, ​​epoxy resin, natural and synthetic rubber, etc., composed of hydrazine hydrate; urea Condensate with sulfuric acid to form the intermediate biurea, and then oxidize to obtain the finished product. The raw material hydrazine hydrate is highly corrosive and highly toxic. It can attack glass, rubber, leather and cork, etc. Vapor and liquid can corrode the skin, eyes, nose, throat and mucous membranes, etc. There is sufficient evidence that azodicarbonamide can induce asthma and other respiratory symptoms. On December 19, 2012, it was included in the list of substances of very high concern SVHC in the EU REACH annex, and it required that ADC resid...

Claims

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Application Information

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IPC IPC(8): G01N30/02G01N30/06
CPCG01N30/02G01N30/06
Inventor 王爱霞黄银波陈妍谢普祥王文张子良谢坚
Owner 泰州市产品质量监督检验中心
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