Unlock instant, AI-driven research and patent intelligence for your innovation.

A test method for nitrobenzene compounds in textiles and leather products

A leather product and testing method technology, applied in the field of chemical testing, can solve the problems of few testing methods, inaccurate measured quantity, poor effect of nitrobenzene compounds, etc.

Active Publication Date: 2021-04-09
湖州出入境检验检疫局综合技术服务中心
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] 1. The technical problem to be solved by the invention: to overcome the shortcomings of the prior art, such as few testing methods for nitrobenzene compounds in textiles and leather products, inaccurate measured amounts, poor extraction effect of nitrobenzene compounds in textiles and leather products, etc.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A test method for nitrobenzene compounds in textiles and leather products
  • A test method for nitrobenzene compounds in textiles and leather products
  • A test method for nitrobenzene compounds in textiles and leather products

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Use high performance liquid chromatography, gas chromatography, gas chromatography-mass spectrometry to test nitrobenzene compounds in textiles and leather products, and the steps are as follows:

[0043] 1. Pretreatment method:

[0044] (1) The pretreatment method of textiles is: accurately weigh 1.0 g (accurate to 0.01 g) of sample, and put it into a fast solvent extraction apparatus for extraction. The conditions of fast solvent extraction were: extraction temperature 70 ℃; pressure: 10.34 MPa; extraction cell volume 10 mL; static extraction time 5 min; extraction solvent was methanol; cleaning volume was 60% of cell volume; purge time 100 s; cycle Times: 5 times. After the extraction was completed, the extract was collected in a chicken heart bottle, rotary evaporated in a water bath at 40 °C until it was nearly dry, then blown dry with nitrogen, and dilute to 2.0 mL with methanol solution for instrumental testing and analysis.

[0045] (2) The pretreatment method...

Embodiment 2

[0055] Use high performance liquid chromatography, gas chromatography, gas chromatography-mass spectrometry to test nitrobenzene compounds in textiles and leather products, and the steps are as follows:

[0056] 1. Pretreatment method:

[0057] (1) The pretreatment method of textiles is: accurately weigh 1.0 g (accurate to 0.01 g) of sample, and put it into a fast solvent extraction apparatus for extraction. The conditions of fast solvent extraction were: extraction temperature 60 ℃; pressure: 9.0 MPa; extraction cell volume 10 mL; static extraction time 4 min; extractant was toluene; cleaning volume was 60% of cell volume; purge time 100 s; cycle Times: 5 times. After the extraction was completed, the extract was collected in a chicken heart bottle, rotary evaporated in a water bath at 40 °C until it was nearly dry, then blown dry with nitrogen, and dilute to 2.0 mL with methanol solution for instrumental testing and analysis.

[0058] (2) The pretreatment method of leather...

Embodiment 3

[0065] Use high performance liquid chromatography, gas chromatography, gas chromatography-mass spectrometry to test nitrobenzene compounds in textiles and leather products, and the steps are as follows:

[0066] 1. Pretreatment method:

[0067] (1) The pretreatment method of textiles is: accurately weigh 1.0 g (accurate to 0.01 g) of sample, and put it into a fast solvent extraction apparatus for extraction. The conditions of fast solvent extraction are: extraction temperature 75°C; pressure: 11.0 MPa; extraction cell volume 10 mL; static extraction time 6 min; Number of cycles: 5 times. After the extraction was completed, the extract was collected in a chicken heart bottle, rotary evaporated in a water bath at 40 °C until it was nearly dry, then blown dry with nitrogen, and dilute to 2.0 mL with methanol solution for instrumental testing and analysis.

[0068] (2) The pretreatment method of leather products is: accurately weigh 1.0 g (accurate to 0.01 g) of sample, and put it...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A test method for nitrobenzene compounds in textiles and leather products involves the determination of nitrobenzene compounds in textiles and leather products by high performance liquid chromatography, gas chromatography, and gas chromatography-mass spectrometry. Through the optimization of extraction conditions, the most suitable pretreatment method was determined; the reference parameters of high performance liquid chromatography, gas chromatography, and gas chromatography-mass spectrometry for 15 nitrobenzene compounds were established. The method of the present invention has the characteristics of rapidity, reliability, high sensitivity, high recovery rate, and good precision, and the amount of reagents is small, avoiding the use of a large number of chemical reagents, reducing environmental pollution, and is used for the determination of nitro groups in textiles and leather products. Benzene compounds are feasible; and it has important practical significance to control product quality and protect people's life and health.

Description

technical field [0001] The invention relates to a test method for nitrobenzene compounds in textiles and leather products, belonging to the technical field of chemical detection. Background technique [0002] Nitrobenzene is an important raw material for fine chemical production. It is colorless or slightly yellow in appearance, has a bitter almond smell, is insoluble in water, and easily soluble in organic solvents such as ethanol, ether, and benzene. Nitrobenzene is widely used in the production of pesticides, dyes, explosives, medicines, polyols, and other chemical products. Some companies also use nitrobenzene as a solution for production activities such as coatings, shoemaking, and flooring materials. [0003] Nitrobenzene is a widespread organic pollutant and one of the internationally recognized hazardous chemicals. The U.S. Environmental Protection Agency stipulates that it is a priority monitoring substance, and my country has identified it as one of the 58 priorit...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01N30/02G01N30/06G01N30/12
CPCG01N30/02G01N30/06G01N30/12G01N2030/062G01N2030/126
Inventor 潘建君张晓婷闵洁钟芸
Owner 湖州出入境检验检疫局综合技术服务中心