Method for analyzing and detecting trace metal ion impurities in dimethyl diallyl ammonium chloride monomers

A technology of dimethyl diallyl ammonium chloride and trace metals, which is applied in the preparation of test samples, measurement of color/spectral properties, etc., can solve the problems of difficulty in ensuring the accuracy and limitation of metal ion content determination results, and the like, Achieve the effect of avoiding operational difficulties and result errors, improving accuracy, and high analytical precision
CN106525745AActive Publication Date: 2017-03-22NANJING UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN ยท China
Current Assignee / Owner
NANJING UNIV OF SCI & TECH
Publication Date
2017-03-22

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Abstract

The invention discloses a method for analyzing and detecting trace metal ion impurities in dimethyl diallyl ammonium chloride (DMDAAC) monomers. According to the method, an organic solvent chelating extraction-flame atomic absorption spectroscopy method is adopted to measure the contents of multiple trace metal ions in DMDAAC monomers of a DMDAAC monomer solution with a high salt content, and avoids the difficult operation and result errors caused by direct injection of a sample with a high salt content. By utilizing the synergistic effect of a complexing agent, three metal ions (Fe, Cu, and Ni) can be complexed, extracted, separated, analyzed, and tested at the same time. The provided method has the advantages that the operation is simple and convenient, the analysis precision is high, and the contents of several trace metal ion impurities in DMDAAC monomers can be accurately, rapidly, and reliably analyzed and detected. The provide method has an important scientific meaning and industrial practical value for industrial manufacturing of high purity DMDAAC monomers, establishment of national / international standards of DMDAAC monomers, and research on the activity of DMDAAC monomers in polymerization reactions.
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Description

technical field

[0001] The invention belongs to the technical field of impurity analysis in cationic quaternary ammonium salt monomers, and in particular relates to an analysis and detection method for trace inorganic metal ion impurities (Fe, Cu, Ni) in dimethyl diallyl ammonium chloride monomers. Background technique

[0002] Dimethyldiallylammonium Chloride (DMDAAC) is a quaternary ammonium cationic monomer with two unsaturated double bonds, and its homopolymer and copolymer obtained by free radical polymerization have The macromolecular chain has the advantages of high or adjustable positive charge density, good water solubility, stable cationic structural unit, easy control of relative molecular mass, high efficiency and non-toxicity, etc., and is widely used in petroleum exploration, textile printing and dyeing, papermaking, daily chemical industry and water processing and many other fields.

[0003] DMDAAC monomer is generally obtained by nucleophilic substitution re...

Claims

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