Method for fast detection of residual amount of restricted organic solvents in textile

A technology of organic solvents and detection methods, which is applied in the field of high-throughput rapid detection, can solve the problems of no detection method, limited use of organic solvents for simultaneous determination, etc., and achieve high accuracy, good economic and social benefits, and high detection throughput Effect

Active Publication Date: 2014-04-09
SHENZHEN ENTRY EXIT INSPECTION & QUARANTINE BUREAU INDAL PROD INSPECTION TECH CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, there are three problems in the existing technology: 1. Relevant regulations have been issued at home and abroad to limit the use of certain organic solvents in textiles, but there is no corresponding detection method at present, such as formamide, N-methylformamide, N -Methylacetamide, ethylene glycol dimethyl ether, ethylene glycol diethyl ether, etc.; 2. Existing methods cannot simultaneously measure a variety of currently restricted organic solvents
Due to the different physical and chemical properties of various organic solvents, it is difficult to perform effective qualitative and quantitative analysis in the same detection method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] This method restricts the use of organic solvents in textiles, including formamide, N-methylformamide, N-methylacetamide, N,N-dimethylformamide, N,N-dimethylacetamide, ethylene glycol Qualitative and quantitative determination of methyl ether, ethylene glycol ethyl ether, ethylene glycol dimethyl ether, diethylene glycol dimethyl ether and N-methylpyrrolidone and other substances, the specific steps include:

[0029] (1) Prepare the standard solution: use methanol as the solvent to dissolve the standard product limited to organic solvents, so as to prepare a standard working solution with a certain gradient;

[0030] (2) Prepare the sample solution to be tested:

[0031] A) Cut the sample to be tested into 5cm×5cm, then accurately weigh 1g of the sample to be tested, and add 20ml of methanol as an extraction agent to the sample to be tested, and then use 45kHz ultrasonic waves to extract ultrasonically at a water bath temperature of 50°C 30min; filter to obtain the ext...

Embodiment 2

[0042] This method restricts the use of organic solvents in textiles, including formamide, N-methylformamide, N-methylacetamide, N,N-dimethylformamide, N,N-dimethylacetamide, ethylene glycol Qualitative and quantitative determination of methyl ether, ethylene glycol ethyl ether, ethylene glycol dimethyl ether, diethylene glycol dimethyl ether and N-methylpyrrolidone and other substances, the specific steps include:

[0043] (1) Prepare the standard solution: use acetonitrile as the solvent to dissolve the standard product limited to organic solvents, so as to prepare a standard working solution with a certain gradient;

[0044] (2) Prepare the sample solution to be tested:

[0045] A) Cut the sample to be tested into 5cm×5cm, then accurately weigh 1g of the sample to be tested, and add 30ml of extraction agent acetonitrile to the sample to be tested, and then ultrasonicate in a 30kHz ultrasonic wave at a water bath temperature of 70°C Extract for 10min, filter to obtain the ext...

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Abstract

The invention provides a method for fast detection of residual amount of restricted organic solvents in a textile. An extraction agent is utilized for extraction, and an extraction solution is determined by using gas chromatography-mass spectrometry. Compared with the prior art, a conventional chemical analytical instrument of gas chromatography-mass spectrometry is adopted for detecting the content of a variety of harmful organic solvents in the textile, the pretreatment is fast and simple, detection limits are low, the accuracy is high, and the detection throughput is high, so that the method is very suitable for batch detection of restricted substances; and in addition, by adopting the detection method provided by the invention, the current blank in the method for detecting the content of the variety of the harmful organic solvents in a light and textile product is filled up, important technical support is provided for product quality control and safety monitoring, and the method can be used for detecting the residual amount of the organic solvents in textile products, leather products and various raw materials and further has good economic and social benefits.

Description

technical field [0001] The invention belongs to the field of product quality detection, and in particular relates to a high-throughput rapid detection method for the residual amount of restricted organic solvents in textiles. Background technique [0002] Textiles inevitably use a large amount of organic solvents from raw material production and processing to finished product finishing. There are already a series of laws and regulations in the world that prohibit the use of some toxic and harmful organic solvents in textiles, including the prohibition of use in the production process, no residue on the final product, or the volatile organic compounds on the final product must not exceed a certain limit value, etc. expression. [0003] At present, the organic solvents restricted by laws and regulations in textiles mainly include amide solvents, glycol ether solvents and N-methylpyrrolidone solvents. In 2003, the EU Directive 2003 / 36 / EC has listed the following substances: f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02G01N30/06
Inventor 谢堂堂林君峰褚乃清王成云唐莉纯李燕华沈雅蕾
Owner SHENZHEN ENTRY EXIT INSPECTION & QUARANTINE BUREAU INDAL PROD INSPECTION TECH CENT
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