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Liquid Chromatographic Analysis Method for Composition Distribution of Fatty Alcohol Polyoxyethylene Ether

An alcohol polyoxyethylene ether and liquid chromatography analysis technology, which is applied in the directions of analysis materials, material separation, measuring devices, etc., can solve the problems of high price of ion mobility mass spectrometer, high instrument requirements, and unfavorable popularization and use, and achieve separation Excellent degree, comprehensive information, easy to popularize effect

Active Publication Date: 2018-04-24
CHINA RES INST OF DAILY CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patent 105067739A uses ultra-high pressure hydrophilic interaction chromatography combined with ion mobility mass spectrometry to conduct two-dimensional separation and analysis of lauryl ether, but the analysis method has high requirements for instruments, and ion mobility mass spectrometers are expensive, which is not conducive to popularization and use

Method used

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  • Liquid Chromatographic Analysis Method for Composition Distribution of Fatty Alcohol Polyoxyethylene Ether
  • Liquid Chromatographic Analysis Method for Composition Distribution of Fatty Alcohol Polyoxyethylene Ether
  • Liquid Chromatographic Analysis Method for Composition Distribution of Fatty Alcohol Polyoxyethylene Ether

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Effect test

Embodiment 1

[0026] Linear C 8-10 Liquid chromatographic analysis of fatty alcohol polyoxyethylene ether with an average addition of 3 ethylene oxides.

[0027] (1) Chromatographic column and mobile phase: Amino-bonded silica gel column is used, and the mobile phase is a mixed solvent composed of hexane, methanol, and tetrahydrofuran. The volume ratios of the three solvents are: 60% hexane, 20% methanol, and tetrahydrofuran 20%;

[0028] (2) Detector: adopt evaporative light scattering detector to detect;

[0029] (3) Preparation of sample solution: weigh 1 part of fatty alcohol polyoxyethylene ether to be tested, add mobile phase to prepare 10mg·mL -1 the sample solution;

[0030] (4) Analysis process: sample solution injection, elution with the prepared mobile equivalence, after the chromatographic peaks are completely eluted, the relative percentage content of each chromatographic peak is calculated by the area normalization method, and the calculation formula is:

[0031]

[003...

Embodiment 2

[0036] Linear C 12-14 Liquid chromatographic analysis of fatty alcohol polyoxyethylene ether with an average addition of 9 ethylene oxides.

[0037] (1) Chromatographic column and mobile phase: Amino-bonded silica gel column is used, and the mobile phase is a mixed solvent composed of hexane, methanol, and tetrahydrofuran. The volume ratios of the three solvents are: 65% hexane, 15% methanol, and tetrahydrofuran 20%;

[0038] (2) Detector: adopt differential refraction detector to detect;

[0039] (3) Preparation of sample solution: Weigh 3 parts of fatty alcohol polyoxyethylene ether to be tested, add mobile phase to prepare 5 mg·mL -1 the sample solution;

[0040] (4) Analysis process: sample solution is injected, eluted with the prepared mobile equivalence, after the chromatographic peak is completely eluted, the relative percentage of the target chromatographic peak is calculated by the area normalization method, and the calculation formula is:

[0041]

[0042] Amo...

Embodiment 3

[0045] branched chain C 12-14 Liquid chromatographic analysis of fatty alcohol polyoxyethylene ether with an average addition of 6 ethylene oxides.

[0046] (1) Chromatographic column and mobile phase: Amino-bonded silica gel column is used, and the mobile phase is a mixed solvent composed of hexane, methanol, and tetrahydrofuran. The volume ratios of the three solvents are: 70% hexane, 15% methanol, and tetrahydrofuran 15%;

[0047] (2) Detector: adopt electric aerosol detector to detect;

[0048] (3) Preparation of sample solution: Weigh 3 parts of fatty alcohol polyoxyethylene ether to be tested, add mobile phase to prepare 8mg·mL -1 the sample solution;

[0049](4) Analysis process: the sample solution is injected separately and eluted with the prepared mobile equivalence. After the chromatographic peak is completely eluted, the relative percentage of the target chromatographic peak is calculated by the area normalization method. The calculation formula is:

[0050] ...

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Abstract

The invention discloses a liquid chromatography analysis method of fatty alcohol polyoxyethylene ether composition distribution. The method includes that an amino bonded silica gel column is adopted as a chromatographic column, a mixed solvent composed of hexane, methanol and tetrahydrofuran is adopted as a moving phase, a universal detector is adopted as a detector, 1-3 parts of fatty alcohol polyoxyethylene ether to be measured is weighed, and the moving phase is added to prepare a sample solution of 0.1-10mg ml-1; the sample solution is injected respectively, the moving phase which is prepared well is used for isocratic elution, and relative percentage content of a target chromatographic peak is calculated by using an area normalization method after chromatographic peak elution is completed. The liquid chromatography analysis method has the advantages of simplicity and convenience in measuring, comprehensiveness in information and easiness in popularization.

Description

technical field [0001] The invention belongs to a detection method for fine chemical products, in particular to a liquid chromatography analysis method for the composition distribution of fatty alcohol polyoxyethylene ether. Background technique [0002] Fatty Alcohol Ethoxylate (Fatty Alcohol Ethoxylate, hereinafter referred to as alcohol ether or AEO) is a kind of non-ionic surfactant with a wide range of uses. It is non-toxic, non-irritating, and easy to biodegrade. Ability, acid and alkali resistance, good compatibility, widely used in daily chemical, textile, printing and dyeing, leather processing, metal processing, petroleum industry and household cleaning and other industries. [0003] Alcohol ether is the addition product of fatty alcohol and ethylene oxide, and its material composition is generally a homologous mixture with a certain average degree of polymerization. For example, the actual composition of alcohol ether marked as AEO3 (the addition number of ethylen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N30/88
CPCG01N30/88G01N2030/8809
Inventor 张军杨秀全周媛白亮
Owner CHINA RES INST OF DAILY CHEM IND
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