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High-performance liquid detection method of alcohol amine cement grinding aid

A cement grinding aid and high-performance liquid phase technology, which is applied to the field of chromatographic detection of substances, can solve the problems of long detection time, can not meet the needs of rapid detection, etc., and achieves good linear relationship and good separation effect.

Active Publication Date: 2020-02-14
NINGBO COLLEGE OF HEALTH SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The above method takes a long time to detect and cannot meet the needs of rapid detection

Method used

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  • High-performance liquid detection method of alcohol amine cement grinding aid
  • High-performance liquid detection method of alcohol amine cement grinding aid
  • High-performance liquid detection method of alcohol amine cement grinding aid

Examples

Experimental program
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Effect test

Embodiment 1

[0034] This embodiment provides a high-efficiency liquid phase detection method for cement grinding aid diethanol monoisopropanolamine, comprising the following steps:

[0035] (1) Preparation of the reference substance solution and the test solution: Accurately weigh an appropriate amount of diethanol monoisopropanolamine reference substance, dissolve it with mobile phase and constant volume to obtain a stock solution of 10.0 mg / mL, and dilute it sequentially with mobile phase to determine Obtain the reference substance solution of 10.0, 20.0, 40.0, 60.0, 80.0 μ g / mL; Accurately weigh 100.0 mg of diethanol monoisopropanolamine test sample, place 10 mL volumetric flask, use mobile phase (methanol and 0.1% acetic acid The volume ratio of the aqueous solution is 80:20) to dissolve and constant volume to obtain the test solution, if the solution is turbid, filter it with a 0.22 μm filter membrane to obtain the test solution; and use the mobile phase as a blank solution;

[0036] ...

Embodiment 2

[0048] This embodiment detects the degree of separation of cement grinding aids diethanol monoisopropanolamine and triethanolamine under the detection method of the present invention, including the following steps:

[0049](1) Preparation of a mixed solution of diethanol monoisopropanolamine and triethanolamine: accurately weigh an appropriate amount of diethanol monoisopropanolamine reference substance and triethanolamine reference substance, dissolve and settle to volume with mobile phase to obtain diethanol monoisopropanolamine Alcohol amine and triethanolamine mixed solution stock solution, the concentration of diethanol monoisopropanolamine and triethanolamine in this mixed solution is 10.0mg / mL, and is diluted with mobile phase to obtain diethanol monoisopropanolamine and triethanolamine The concentration is 80.0μg / mL solution;

[0050] (2) Chromatographic conditions (high performance liquid chromatography (Shimadzu LC-20AT)):

[0051] Chromatographic column: Waters XBr...

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Abstract

The invention provides a method of detecting an alcohol amine cement grinding aid through a high-performance liquid chromatograph in combination with an evaporative light-scattering detector. According to chromatographic conditions, the chromatographic column is a reversed phase C18 chromatographic column; the detector is an ELSD detector; and the mobile phase comprises a mobile phase A and a mobile phase B, wherein the mobile phase A is methyl alcohol, the mobile phase B is a 0.1% acetic acid aqueous solution, and the volume ratio of the methyl alcohol to the 0.1% acetic acid aqueous solutionis 80:20. By the adoption of the detection method, the alcohol amine cement grinding aid can be effectively detected, the separation effect is good, detection can be completed in 5min, and the detection time is greatly shortened; and meanwhile, the detection method is high in sensitivity and accuracy and has a good linear relation, thereby having important research value in industrial analysis, product formula research and other aspects.

Description

technical field [0001] The invention relates to the technical field of detecting substances by chromatography, in particular to a high-efficiency liquid-phase detection method of alcohol amine cement grinding aids. Background technique [0002] Alcoholamines in cement grinding aids mainly include triethanolamine (TEA for short), triisopropanolamine (TIPA for short) and new triisopropanolamine (including diethanol monoisopropanolamine and monoethanol diisopropanolamine). Amines, etc., the former referred to as DEIPA) and so on. Diethanol monoisopropanolamine (C 7 h 17 NO 3 ), also known as 1-[N,N-bis(2-hydroxyethyl)amino]propan-2-ol, is a colorless or light yellow transparent viscous liquid with an irritating ammonia smell. [0003] [0004] About the determination of the content of diethanol monoisopropanolamine, existing reports in the prior art: Zheng Rongping, Li Geli, Lin Qian, cement. 2014.11, its detection method is: adopt gas chromatography to measure diethanol...

Claims

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Application Information

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IPC IPC(8): G01N30/02G01N30/06G01N30/34G01N30/36G01N30/74
CPCG01N30/02G01N30/06G01N30/36G01N30/34G01N30/74G01N2030/027
Inventor 李诚石予白秦志伟吴迪
Owner NINGBO COLLEGE OF HEALTH SCI
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