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A method for measuring the residual amount of acrylamide monomer in polyacrylamide substances

A technology of acrylamide monomer and polyacrylamide, which is applied in the direction of color/spectral characteristic measurement, etc., can solve the problems of cumbersome acrylamide experiment process, expensive test cost, and difficulty in large-scale analysis, and achieve good prediction effect, fast operation, The effect of good linear correlation

Active Publication Date: 2011-11-30
善水(南通)工业技术有限公司
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Problems solved by technology

[0007] Aiming at the problems that existing methods for determining the residual amount of acrylamide monomer in polyacrylamide substances have cumbersome experimental procedures, expensive testing costs, long testing time, and difficulty in large-scale analysis, the purpose of the present invention is to provide a The method is fast, simple, accurate, low cost, does not require sample pretreatment, does not consume any reagents and standard substances, etc.

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  • A method for measuring the residual amount of acrylamide monomer in polyacrylamide substances

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Embodiment 1

[0019] Example 1: The laboratory-made solid PDA (PDA is a copolymer of dimethyl diallyl ammonium chloride (DMDAAC) and acrylamide (AM)) was selected as the measurement sample, specifically including the following steps:

[0020] (1) Use the principal component analysis method to screen 38 samples from the solid PDA made in the laboratory, put the samples into a mortar for grinding, and pass through a 32-mesh sieve;

[0021] (2) The near-infrared spectrometer adopts the NIRQuest-512 near-infrared analyzer produced by Ocean Optics in the United States, with an optical resolution of 4nm, equipped with pectraSuite spectroscopy platform software, and a wavelength range of 900-1700 nm. The sample spectrum sampling time is 48ms, with an average of 8 times, the smoothness is set to 3, the spectrometer is warmed up for half an hour before sampling, and the dark current is deducted;

[0022] (3) Insert the reflection probes of the near-infrared analyzer into the samples obtained by siev...

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Abstract

The invention provides a method for measuring the residual quantity of an acrylamide monomer in polyacrylamide substances. According to the method, operation steps can be simplified, the operation expense is reduced and the scale analysis of the residual quantity of the acrylamide monomer is realized. Along with the development and the application of chemometrics, a near-infrared spectroscopic analysis technology has been widely applied to the fields of industry, agriculture, medicines and the like and but has not been applied to the determination of the content of acrylamide in the polyacrylamide substances. In the method, a near-infrared spectroscopic analyzer is used as a measuring tool to analyze the residual quantity of the acrylamide monomer in the polyacrylamide substances, thus the labor intensity in the determination process can be effectively reduced, the operation expense is reduced and the work efficiency is improved. The invention has the advantages of quickness, accuracy, simpleness and convenience in operation, low cost, no consumption of any reagent or standard substances, and the like. The method can become an important method for determining the residual quantityof the arylamide monomer in the quality control of the polyacrylamide substances.

Description

Technical field [0001] The present invention is a way to determine the residual amount of acrylamide monomers in polyacrylamide.Mainly provides a fast and accurate analysis test method for the measurement of acrylamide monomers in polyacrylamide. [0002] Background technique [0003] The concrete method is one of the most commonly used, money -saving and very important methods in water treatment.In the process of concrete treatment, the effect of concrete treatment is closely related to the type and nature of the concrete.Polyacrylamide coagulant is widely used in sewage treatment, daily chemical, mining, papermaking, petroleum due to the advantages of high positive charge density on the molecular chain, good water -soluble, relative molecular quality, and acid -alkali resistance.Industry and other fields.However, in the process of synthesis of polyacrylamide, the monomer cannot be fully transformed, so a certain amount of monomers remain in the product.Because acrylamide monome...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/27
Inventor 郑怀礼张照清蒋绍阶朱国成蒋贞贞苗树祥
Owner 善水(南通)工业技术有限公司
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