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Spectrum detection method for alkylphenol compounds in textile auxiliaries

A technology for textile auxiliaries and spectral detection, applied in the field of detection of harmful substances in textile auxiliaries, can solve the problems of expensive equipment, high analysis cost, APEO missed detection and wrong detection, etc., to prevent unnecessary losses, analysis methods Simple, eliminate the effect of APEO

Inactive Publication Date: 2012-07-04
ZHEJIANG SCI-TECH UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

HPLC analysis is qualitative and quantitative by comparing the extracted sample with the APEO standard. Since there are many types of APEO and some products have modified the molecular structure of APEO, it is difficult to guarantee whether the existing standard has included Various forms of APEO, especially the lack of domestic APEO standard samples, make it easy for HPLC analysis to cause missed detection and wrong detection of APEO; liquid mass spectrometry analysis may be more accurate and effective for the detection of various types of APEO, but liquid mass spectrometry The combined instrument is expensive and the analysis cost is high; the GC analysis method needs to derivatize the sample, the whole detection process is complicated, and there are many uncertain factors in the detection result
To sum up, the detection method of micro-APEO on fabrics is relatively complicated, and requires high-precision and expensive equipment. Once APEO is detected in textile products, the huge economic losses of related enterprises have been irreparable.

Method used

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  • Spectrum detection method for alkylphenol compounds in textile auxiliaries
  • Spectrum detection method for alkylphenol compounds in textile auxiliaries
  • Spectrum detection method for alkylphenol compounds in textile auxiliaries

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Ultraviolet and infrared spectroscopic analysis of alkylphenol polyoxyethylene ether surfactants with different structural forms:

[0026] Samples 1#-4# are NP-7, NP-40, OP-9, and nonylphenol polyoxyethylene ether phosphate respectively. These samples have different alkyl groups, different vinyl ether polymerization degrees, and different ion structure forms.

[0027] Do ultraviolet and infrared spectrum analysis on these samples respectively. These samples have absorption peaks at 225nm and 277nm in the ultraviolet spectrum. These two absorption peaks are the resonance absorption bands E2 and B of the conjugated aromatic ring due to the presence of epoxy groups. Results with red shift; the ultraviolet second derivative spectra of these samples have absorption at 280-290nm. Infrared spectra( figure 1 a) shows that these substances are all within 1610±2cm -1 , 1510±2cm -1 There is a group of absorption peaks of p-substituted alkylphenols, 1115±3cm -1 There is an abso...

Embodiment 2

[0031] Samples 5# and 6# are ABS (sodium alkylbenzene sulfonate) and aqueous solution of mixture of NP-7 and ABS (the content of NP-7 is 1%, and the content of ABS is 5%).

[0032] The ultraviolet spectrum test shows that 5# sample has absorption at 225nm and 261nm, and its ultraviolet second derivative spectrum has no absorption at 280~290nm, while 6# ultraviolet second derivative spectrum has absorption at 280~290nm.

[0033] Infrared spectra( figure 2 ) shows that the original infrared spectra of samples 5# and 6# are relatively close, at 1650cm -1 ~1500cm -1 There are absorption peaks in the range, and the 6# sample in the second derivative spectrum has 1607cm -1 and 1512cm -1 A group of peaks, 5# does not.

[0034] Conclusion: 5# does not contain APEO, and 6# contains APEO.

[0035] figure 2 middle: figure 2 a is the original infrared spectrum; figure 2 b is the second derivative spectrum.

Embodiment 3

[0037] Samples 7# and 8# are MF (sodium methylene bismethyl naphthalene sulfonate) and the aqueous solution of the mixture of NP-7 and MF (the content of NP-7 is 1%, and the content of MF is 5%).

[0038] The ultraviolet spectrum test shows that both the 7# and 8# samples have absorption in the range of 280-290nm.

[0039] Infrared spectra( image 3 ) shows that the original infrared spectra of samples 7# and 8# are relatively close, at 1650cm -1 ~1500cm -1There are absorption peaks in the range, and the 8# sample in the second derivative spectrum has 1611cm -1 and 1510cm -1 A set of peaks.

[0040] Conclusion: 7# does not contain APEO, and 8# contains APEO.

[0041] image 3 middle: image 3 a is the original infrared spectrum; image 3 b is the second derivative spectrum.

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Abstract

The invention discloses a spectrum detection method for alkylphenol compounds in textile auxiliaries. In the method, through analyzing the infrared and ultraviolet characteristic spectrums of alkylphenol ethoxylates (APEO) with different structures and other surfactants, an operation of spectral peak isolation and identification is effectively performed on the APEO or surfactants which are possibly have interference on the infrared and ultraviolet spectrums of the APEO by using a second derivative spectral analysis method. By using the method, textile auxiliaries can be determined directly without using standard products and carrying out extraction separation, and APEO (in different structure forms) in the textile auxiliaries can be qualitatively screened quickly and accurately; instruments involved in the invention are low in price and wide in popularity, the method is easy to operate, simple in analysis method and low in analysis cost; and the method is suitable for being used for pre-monitoring various auxiliaries used in production quickly, simply and conveniently by enterprises, thereby completely eradicating APEO at the source and preventing unnecessary losses of the enterprises. The method disclosed by the invention is wide in applicability and broad in application prospect.

Description

technical field [0001] The invention relates to a detection method for harmful substances in textile auxiliaries, in particular to a spectral detection method for alkylphenols in textile auxiliaries. Background technique [0002] Alkylphenol polyoxyethylene ether compounds (abbreviated as APEO), which are mainly composed of alkylphenols (mostly nonylphenol NP and octylphenol OP) and ethylene oxide in a certain proportion under different conditions. Homologous mixtures of different degrees of polymerization. It has good wetting, penetrating, emulsifying, dispersing, solubilizing and washing functions, and has been widely used in textile auxiliaries. In recent years, the potential harm of APEO to the environment has been extensively studied and demonstrated, and the prohibition and detection of APEO has become a hot topic in the industry. Since APEO is widely used in the formulation of textile auxiliaries, the recent European requirements on APEO-free textiles pose a severe ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/33G01N21/35G01N21/3577
Inventor 邵敏董锁拽
Owner ZHEJIANG SCI-TECH UNIV
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