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Method for detecting concentration of polycrylamide

A polyacrylamide and detection method technology, which is applied to material inspection products, chemical analysis by titration, etc., can solve the problems of low detection range and resolution, poor accuracy, etc., and achieve fast application in mines, less detection time, good repeatability

Inactive Publication Date: 2004-02-25
NO 3 OIL PRODION PLANT OF SINOPEC ZHONGYUAN OILFIELD
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the defects of the detection methods and data in the prior art, such as poor stability, repeatability, poor accuracy, low detection range and resolution, and a method for detecting the concentration of polyacrylamide designed

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  • Method for detecting concentration of polycrylamide
  • Method for detecting concentration of polycrylamide

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Embodiment Construction

[0014] Below in conjunction with embodiment the present invention will be further described:

[0015] One, the instrument that the present invention uses mainly contains: spectrophotometer, volumetric flask, pipette, purifier ball etc.

[0016] 2. The medicines used in this method mainly include: sodium acetate trihydrate, aluminum sulfate, NH 4 HF 2 , FeSO 4 , starch, CdI 2 Wait.

[0017] 3. Main reagents:

[0018] (1) Buffer solution: Weigh 25g of sodium acetate trihydrate and dissolve it in 800ml of deionized water, add 0.5g of aluminum sulfate, adjust the pH value to 4.0 with acetic acid, and then dilute to 1000ml for later use. Reducing agent: 4% NH 4 HF 2 -FeSO 4 solution. Starch-CdI 2 Reagent: weigh 11gCdI 2 Dissolve in 400ml of boiling water, add 2.5g of soluble starch, boil for 10 minutes, filter while hot, wash with water, and finally dilute to 1000ml for later use.

[0019] (2) Standard solution: Prepare polyacrylamide standard solutions with concentrati...

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Abstract

A method for testing the concentration of polyacrylamide includes such steps as oxidizing the amide of polyacrylamide to N-amide bromide by Br2 under acidic condition, removing excess Br2 with FeSO4 solution containing NH4HF2, quantitative hydrolysis of resultant to generate hypobromous acid, quantitative oxidizing I ion to I2, combining I2 and I to obtain i3 ions, developing colour by adding starch, colour measuring by spectrophotometer, and comparing the measured values with standard curve to obtain the concentration of polyacrylamide.

Description

Technical field: [0001] The invention relates to a method for detecting the concentration of polyacrylamide, which belongs to the technical field of chemical drug detection, and in particular to a method for detecting the concentration of polyacrylamide. Background technique: [0002] Partially hydrolyzed polyacrylamide (HPAM) has the characteristics of high molecular weight, high viscosity, hydrogen bond, and easy adsorption. It is widely used in drilling mud, tertiary oil recovery, mineral processing, food industry, and water treatment. In the prior art, the detection method of the polyacrylamide concentration that has been reported or applied has the following several kinds: bromogermine method, viscosity method, turbidity method, acid / bleach solution precipitation turbidity method, ultraviolet light spectrophotometry, bromogermine photometry method, gel permeation chromatography, flow injection method, hydroxamic acid iron colorimetric method, nitrogen determination meth...

Claims

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Application Information

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IPC IPC(8): G01N31/16G01N33/44
Inventor 赵普春
Owner NO 3 OIL PRODION PLANT OF SINOPEC ZHONGYUAN OILFIELD
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