Method for measuring residual quantity of acrylamide monomer in polyacrylamide substances
A technology of acrylamide monomer and polyacrylamide, which is applied in the measurement of color/spectral properties, etc., can solve the problems of cumbersome experimental process of acrylamide, difficult to scale analysis, and high test cost, and achieves good prediction effect, fast operation, and high cost. The effect of reducing measurement errors
Active Publication Date: 2013-02-27
善水(南通)工业技术有限公司
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[0005] 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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Embodiment 1
[0016] 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:
[0017] (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;
[0018] (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;
[0019] (3) Insert the reflection probes of the near-infrared analyzer into the samples obtained by siev...
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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 invention relates to a method for measuring the residual amount of acrylamide monomer in polyacrylamide substances. It mainly provides a fast and accurate analytical test method for the determination of the residual amount of acrylamide monomer in polyacrylamide substances. Background technique [0002] Coagulation is one of the most common, cost-effective and very important methods of water treatment. During the coagulation treatment process, the coagulation treatment effect is closely related to the type and nature of the coagulant. Polyacrylamide coagulants are widely used in sewage treatment, daily chemical industry, mining, papermaking, petroleum, etc. industry and other fields. However, during the synthesis of polyacrylamides, monomers cannot be completely converted, so a certain amount of monomers remain in the product. Because acrylamide monomers are carcinogenic and affect the nervous system, the application range of polyacrylamides is...
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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