Detection method for banned azo-dye in textile

A technology that prohibits azo and detection methods, applied in the field of chemical detection, can solve problems such as inability to operate in batches, high cost, and time-consuming, and achieve the effects of reduced procedures, short time, and low cost

Inactive Publication Date: 2014-11-19
广州衡创测试技术服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

GB / T17592-2011, Determination of banned azo dyes in textiles, GB / T 23344, Determination of 4-aminoazobenzene in textiles, this method is used for quantitative methods, and has many disadvantages compared with production, such as high cost and consumption For a long time, can not operate in batches, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A detection method for prohibited azo dyes in textiles, comprising the following steps:

[0036] (a) Sampling and cutting

[0037] Remove the glue and attachments on the sample as cleanly as possible, and treat different samples separately:

[0038] (a1) According to requirements or random sampling, for complex samples, the sampling point should be marked and photographed;

[0039] (a2) For fabrics printed with colored patterns, samples should be subdivided into single colors as far as possible, and fabrics of different materials or colors on the product should be sampled separately;

[0040] (a3) Textile sample containing polyester fiber: cut the sample into 20mm×30mm size, and mix well;

[0041] (a4) Textile sample without polyester fiber: cut the sample into 5mm×5mm size and mix well;

[0042] (b) Sample pretreatment and reduction decomposition reaction

[0043] (b1) Textiles containing polyester fibers

[0044] Weigh 1.000g sample from the mixed sample, tie it ...

Embodiment 2

[0051] This example is tested according to Example 1. When the supernatant in step (c2) is turbid, it needs to be filtered with a 0.22um filter head first. If it cannot be filtered or the test result on the gas chromatography-mass spectrometer after filtration is positive, the textile For the detection of forbidden azo dyes, retest according to the following steps:

[0052] (a) Sampling and cutting

[0053] Remove the glue and attachments on the sample as cleanly as possible, and treat different samples separately:

[0054] (a1) According to requirements or random sampling, for complex samples, the sampling point should be marked and photographed;

[0055] (a2) For fabrics printed with colored patterns, samples should be subdivided into single colors as far as possible, and fabrics of different materials or colors on the product should be sampled separately;

[0056] (a3) Textile sample containing polyester fiber: cut the sample into 20mm×30mm size, and mix well;

[0057] (a4...

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PUM

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Abstract

The invention provides a detection method for banned azo-dye in a textile. The method comprises the following steps: (a) sampling and sample cutting, wherein glue and attachments on samples are cleaned as much as possible and different samples are respectively processed; (b) pretreatment and reductive decomposition of the samples; and (c) extraction and measurement of results. According to the invention, 5 mL of t-butyl methyl ether is added and the principles of liquid-liquid extraction are employed to extract amine substances in extract; a few amount of anhydrous sodium sulfate is added to remove moisture in an organic phase and to allow samples floating between two phases to settle down to the bottom, which is beneficial for absorption of the organic phase; and screening with such a method needs short time and low cost.

Description

technical field [0001] The invention relates to a detection method for prohibited azo dyes in textiles, belonging to the technical field of chemical detection. Background technique [0002] Azo dyes are the dyes with the largest number of varieties in the current dye market. They are named after the azo groups contained in the dye molecules. It is widely used in the dyeing and printing of various natural and synthetic fibers, and also in the coloring of paint, plastic, rubber, etc. After long-term contact with human skin, these clothing or other consumer products dyed with prohibited azo dyes will mix with the components released during metabolism and undergo a reduction reaction to form carcinogenic aromatic amine compounds, which will be absorbed by the human body. After a series of activation, the DNA of human cells undergoes structural and functional changes, becoming the cause of human disease. GB / T17592-2011, Determination of banned azo dyes in textiles, GB / T 23344, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02G01N30/08
Inventor 陈凯松
Owner 广州衡创测试技术服务有限公司
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