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Method for determining contents of eight prohibited and restricted glycol ether solvents in dyeing and finishing auxiliaries of textiles

A glycol ether and solvent content technology, applied in the direction of measuring devices, instruments, scientific instruments, etc., to achieve the effects of short detection time, high sensitivity, and simple operation

Pending Publication Date: 2019-03-08
深圳海关工业品检测技术中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the deficiencies of the prior art, the present invention discloses a method for measuring the contents of eight prohibited and restricted glycol ether solvents in textile dyeing and finishing auxiliaries, so as to solve the problem technical problem

Method used

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  • Method for determining contents of eight prohibited and restricted glycol ether solvents in dyeing and finishing auxiliaries of textiles
  • Method for determining contents of eight prohibited and restricted glycol ether solvents in dyeing and finishing auxiliaries of textiles
  • Method for determining contents of eight prohibited and restricted glycol ether solvents in dyeing and finishing auxiliaries of textiles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Simultaneously determine the GC / MS method of 8 kinds of limited glycol ether solvents in textile dyeing and finishing auxiliaries, including the following steps:

[0045] 1. Preparation of working solution

[0046] 1) Standard solution configuration: weigh ethylene glycol monomethyl ether (EGME), ethylene glycol monoethyl ether (EGEE), ethylene glycol dimethyl ether (EGDME), diethylene glycol dimethyl ether (DEGDME), three Ethylene glycol dimethyl ether (TEGDME), ethylene glycol methyl ether acetate (EGMEA), ethylene glycol ethyl ether acetate (EGEEA), 2-methoxy-1-propanol acetate (PGMEA) 0.1g (accurate to 0.0001g), dissolved in methanol and adjusted to 10mL to obtain a single standard solution with a concentration of 10mg / mL, and stored in a refrigerator. When in use, pipette the above single standard solution and dilute it step by step with methanol to obtain a series of mixed standard solutions of 0.05, 0.1, 0.2, 0.4, 0.8, 1.0, 5.0, 10.0, 15.0, 20.0, 25.0 mg / mL.

...

Embodiment 2

[0067] Take the sample solution obtained in Step 2 of Example 1, and compare it with the filtrate of the positive sample that has not been purified through the column, and the results are shown in Table 3 below. Use the instrument conditions set in step 2 to obtain GC / MS chromatograms, such as figure 2 shown.

[0068] Table 3 Actual sample purification effect

[0069]

[0070] From the above, it can be seen that there are few interfering substances after passing through the column, the spectrum is clear, the peaks are sharp, the symmetry is good, and the recoveries are all above 95%.

Embodiment 3

[0072] Add mixed standard solutions of different concentrations to the blank solution for measurement to determine the linear relationship, which is listed in Table 2. At the same time, the detection limit of the method was determined in the blank sample by adopting the standard addition test method. Under the condition of S / N=3, the detection limit of each component was obtained, which is also listed in Table 4.

[0073] Table 4 The linear relationship and detection limit of the method

[0074]

[0075] Considering the limit requirements of the regulations and the applicability of the standards, the detection limits of the eight glycol ethers are unified at 5.0 mg / kg. As can be seen from Table 4, the method of the present invention satisfies the limit requirements of laws and regulations and the applicability of standards.

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Abstract

The invention discloses a method for determining contents of eight prohibited and restricted glycol ether solvents in dyeing and finishing auxiliaries of textiles. The method comprises the following steps: treating a sample in the manner of ultrasonic dissolvent extraction and solid-phase extraction purification to obtain a sample solution, and adopting a GC / MS method and selecting an ion monitoring mode for determining the contents of glycol ether organic solvents in the sample solution. The GC / MS method for simultaneously determining eight glycol ether organic solvents is established by pretreating the sample and optimizing GC / MS conditions. The method is simple and convenient, is high in extraction efficiency, has higher accuracy and sensitivity and is suitable for determination of various dyeing and finishing auxiliariesof textiles.

Description

technical field [0001] The invention relates to the technical field of detecting chemical substances, in particular to a method for measuring the content of eight prohibited and restricted glycol ether solvents in textile dyeing and finishing auxiliaries. Background technique [0002] Glycol ether organic solvents are widely used in various fields due to their excellent performance, such as industrial cleaning agents, dyes, resins, leather processing, textile dyeing and finishing industries, etc. In recent years, scientific research has found that certain glycol ether organic solvents have obvious follow-up effects on the human central nervous system, liver, kidneys, and reproductive system. The safety of glycol ether organic solvents has attracted the attention of the health and environmental protection departments of various countries. The United States, the European Union, Japan, Canada and other countries have legislated to restrict the production and use of glycol ether...

Claims

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Application Information

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IPC IPC(8): G01N30/02G01N30/06G01N30/14
CPCG01N30/02G01N30/06G01N30/14G01N2030/062
Inventor 林君峰李燕华王刚
Owner 深圳海关工业品检测技术中心
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