A kind of method that utilizes ion chromatography to quantify sodium ion content in nylon monomer
A nylon monomer, ion chromatography technology, applied in the field of chemical product detection, can solve the problems of complex sample processing process, large environmental pollution, long detection period, etc., and achieve the effect of overcoming long processing time, high sensitivity and short detection time
Active Publication Date: 2022-07-19
WUXI YINDA NYLON
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Problems solved by technology
[0004] Recently, the main method for detecting metal ions is spectrometry. Spectroscopy has great environmental pollution, complicated sample processing process, long detection cycle and high cost.
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Embodiment 1
[0032] A method for quantifying sodium ion content in nylon monomers by using ion chromatography, the experimental conditions adopted are as follows:
[0033] 1. Experimental analysis instruments and conditions: ICS 1000 ion chromatograph, conductivity detector;
[0034] 2. Experimental sample: sodium ion standard solution, purchased from Beijing Northern Weiye Institute of Metrology and Technology, with a content of 1 mg / mL.
[0035] 3. Chromatographic conditions: Chromatographic column: IC YS-50 (4.6×125mm, 5μm) cation chromatographic column;
[0036] Mobile phase: mobile phase is 4mmol / L methanesulfonic acid solution;
[0037] Flow rate: 1mL / min;
[0038] Detector temperature: 40℃;
[0039] Column temperature: 30℃;
[0040] Injection volume: 20 μL.
[0041] Detection steps:
[0042] (1) Accurately draw different volumes of sodium ion standard solutions into different volumetric flasks, dilute with water, make up to the mark, shake well, and prepare the concentrations ...
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Abstract
The invention belongs to the technical field of chemical product detection, and in particular relates to a method for quantifying sodium ion content in nylon monomer by using ion chromatography. The invention includes the following steps: (1) preparing a series of sodium ion standard solutions for use; (2) preparing a sample solution to be tested for use; (3) using the sodium ion standard solution to determine the retention time of sodium ions, making a standard curve, and then measuring The test sample is analyzed by ion chromatography to determine the sodium ion in the test sample, and then the content is calculated according to the peak area; the chromatographic conditions are as follows: chromatographic column: the stationary phase is polyvinyl alcohol filler; mobile phase: mobile phase is organic acid solution; flow rate : 0.8‑1.0mL / min, column temperature: 25‑35℃, injection volume: 10‑30μL. The method adopts ion chromatography for quantitative detection, and has the advantages of simple sample processing, high sensitivity, good separation, accurate quantification, etc.
Description
technical field [0001] The invention belongs to the technical field of chemical product detection, and relates to a method for quantitatively detecting sodium ions in nylon monomers, in particular to a method for quantifying sodium ion content in nylon monomers by using ion chromatography. Background technique [0002] Nylon 12 is mainly used for marine pipes and urban natural gas pipelines, optical fibers, cable sleeves, mechanical cams, automobiles, sliding mechanisms and bearings, etc. Tubes, industrial high-pressure hydraulic tubes, quick connectors for tubes, helical shafts of automotive anti-lock braking systems, sliding parts of precision gears, cams and bearings, antistatic rollers for copiers, antistatic containers and IC chip guide rails, optical cable jackets, transparent pipes , Self-adhesive wire paint, muffler gears, sports soles, cable buckles, tennis racket buckles and many other aspects. [0003] ω-aminododecanoic acid is a monomer for synthesizing nylon 12...
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IPC IPC(8): G01N30/96G01N30/06G01N30/54
CPCG01N30/96G01N30/06G01N30/54
Inventor 秦昌成陈尚标胡瑞莉殷炼伟
Owner WUXI YINDA NYLON