Method for simultaneously measuring chlorotoluene compounds in leather by gas chromatography-mass spectrography

A technology of gas chromatography and chlorotoluene, applied in the field of leather, can solve problems such as teratogenicity, not easy to decompose, and affect the central nervous system

Inactive Publication Date: 2017-05-31
韩超
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  • Claims
  • Application Information

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Problems solved by technology

[0003] However, studies at home and abroad have shown that the chemical properties of chlorotoluene compounds are very stable, and they are not easy to decompose under natural conditions. Long-term exposure will cause skin allergies, affect the human central nervous system, and then have potential teratogenic and carcinogenic effects on the human body.

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  • Method for simultaneously measuring chlorotoluene compounds in leather by gas chromatography-mass spectrography
  • Method for simultaneously measuring chlorotoluene compounds in leather by gas chromatography-mass spectrography
  • Method for simultaneously measuring chlorotoluene compounds in leather by gas chromatography-mass spectrography

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Embodiment Construction

[0051] Specific embodiments of the present invention such as Figure 1-20 Shown is the method for the simultaneous determination of chlorotoluene compounds in leather by gas chromatography-mass spectrometry, which may further comprise the steps:

[0052] Step 1. Preparation of the sample to be tested. Take an appropriate amount of leather samples, cut the samples into pieces, and the sample size range is less than 20mm×20mm, and mix the cut samples evenly;

[0053] Step 2. Sample extraction. Weigh 1.00 g of the sample, place it in a 40 mL reaction bottle, add 30 mL of dichloromethane, and perform ultrasonic extraction for 30 min at room temperature to obtain an ultrasonic extraction solution. Filter the ultrasonic extraction solution into a 100 mL flat-bottomed flask, concentrate with a rotary evaporator at a temperature of 40°C to obtain a 1-2 mL concentrated solution, transfer the concentrated solution to an evaporating tube, wash the flat-bottomed flask with a small amount ...

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Abstract

The invention discloses a method for simultaneously measuring chlorotoluene compounds in leather by gas chromatography-mass spectrography. The method comprises the following steps: preparing a sample to be measured; extracting the sample; preparing a standard working solution; detecting a sample solution to be measured. According to the method, ultrasonic extracting, gas chromatography and mass spectrography are combined, so that chlorotoluene organic pollutants in the leather can be measured simultaneously; the method has the advantages of accuracy, quickness and high sensitivity; reliable detection method support is provided for quick detection of the leather.

Description

technical field [0001] The invention belongs to the field of leather detection and relates to gas chromatography-mass spectrometry (GC-MS), in particular to a method for simultaneously measuring chlorotoluene compounds in leather by gas chromatography-mass spectrometry, and is especially suitable for leather. Background technique [0002] With the improvement of people's living standards and the enhancement of environmental awareness, green consumption has become a trend. The carrier dyeing process is a commonly used dyeing process in the leather industry. Carrier dyeing is beneficial to dyeing leather with disperse dyes under atmospheric pressure boiling dyeing conditions. Some inexpensive chlorine-containing aromatic compounds, such as chlorotoluene, dichlorotoluene, and trichlorotoluene, are efficient dyeing carriers. These chlorotoluene carriers are used in the leather dyeing process to aid in bulking of the fiber structure and penetration of the dye. [0003] However...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/06
CPCG01N30/06G01N2030/062
Inventor 韩超沈燕刘滨沈浩朱振瓯黄芙珍
Owner 韩超
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