Method for measuring content of residue acrylamide monomer in water treatment agent cationic polyacrylamide

A technology of acrylamide monomer and polyacrylamide, which is applied in the preparation of test samples and the measurement of color/spectral properties, etc., can solve the problems of complicated processing technology and high processing cost, and achieve simple operation, low detection cost and stable system. Effect

Active Publication Date: 2012-07-18
深圳准诺检测有限公司
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Problems solved by technology

[0006] Aiming at the problems of cumbersome processing technology and high processing cost in the existing detection method of residual acrylamide content in cationic polyacrylamide, the purpose of the...

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  • Method for measuring content of residue acrylamide monomer in water treatment agent cationic polyacrylamide
  • Method for measuring content of residue acrylamide monomer in water treatment agent cationic polyacrylamide

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Embodiment Construction

[0019] A method for detecting residual acrylamide monomer content in cationic polyacrylamide, a water treatment agent, comprising the steps of:

[0020] First, cut a certain mass of about 4-5g (dry weight 1-2g) cationic polyacrylamide colloid into small pieces with a diameter of about 1-2mm, put it into a conical flask, and record the mass W. Add a small amount of water (the sum of the amount added and the water content in the colloid) to the Erlenmeyer flask successively to be 10ml and 90ml of absolute ethanol, cover the cork immediately, and place it in a cool place for 24 hours;

[0021] Secondly, quickly transfer the supernatant in the conical flask to a 250ml volumetric flask, then add 10ml of absolute ethanol and 90ml of water, and finally use the mixed solution (V 无水乙醇 :V 水 1:1) fixed volume;

[0022] Third, after standing still for 30 minutes, measure its absorbance at a wavelength of 205 nm with an ultraviolet spectrophotometer, and calculate the concentration of ac...

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Abstract

The invention discloses a method for measuring the content of residue acrylamide monomer in water treatment agent cationic polyacrylamide, and the method is realized through the following steps: firstly, immersing polymer ationic polyacrylamide in a mixed solvent (volume ratio 9 to 1) formed by ethanol and water for 24 hours, transferring supernatant fluid into a volumetric flask, replenishing a certain amount of ethanol and water to enable the volume ratio of ethanol to water to be 1 to 1, and performing the isochoric process by mixed liquid. The absorbance A of to-be-measured solution is measured at a position with 205nm wavelength through the ultraviolet spectrophotometry, and the content of acrylamide in the to-be-measured solution can be calculated according to a preliminary drawn acrylamide standard sample standard curve. According to the invention, the recovery rate of measured material achieves more than 85%, and the method has the advantages of simple operation, excellent reproducibility, cheap and non-toxic solvent, low measurement cost and the like, thereby being applicable to quality inspection by manufacturing enterprises, use and application divisions and quality inspection divisions.

Description

technical field [0001] The invention relates to a detection method for residual acrylamide monomer content in polyacrylamide colloid, in particular to a detection method for residual acrylamide monomer content in water treatment agent cationic polyacrylamide colloid. Background technique [0002] In recent years, with the use of organic synthetic chemicals, pesticides and the discharge of industrial wastewater, the water quality of water sources has been subject to varying degrees of organic pollution, and the types and quantities of pollutants in water are increasing. In the field of water pollution control, water treatment The demand for the types and quantities of agents is constantly increasing. Polyacrylamide is the most widely used organic polymer water treatment agent, including non-ionic, anionic, cationic and zwitterionic. Cationic polyacrylamide has positively charged active groups on the molecular chain, which can destabilize and flocculate solid particles throug...

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Application Information

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IPC IPC(8): G01N21/33G01N1/28
Inventor 郑怀礼尤艳飞范伟吉方英邓晓莉陈文源孙永军陆兰英
Owner 深圳准诺检测有限公司
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