Spectrum detection method for alkylphenol compounds in textile auxiliaries

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 ...

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.

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