| It’s a common method to obtain ion exchange capacity by dynamic coating of column. The porous graphite carbon column has the properties of resistance to acid and alkali, high temperature and all kinds of organic solvent, and stable performance is it’s another characteristics. So this paper select porous graphite carbon column as the coated object, explores the optimal coating conditions and stability under different conditions to explore and broaden its scope of application.Two types of cationic surfactants were selected for the dynamic coating of porous graphite carbon column. The column efficiency and stability has been enhanced by improving the coating method, and also the advantages and disadvantages has been compared between carbonate system and OH system. Besides that, the "aged" step has been put forward to make the column more stable and with high practical value. Explores the common inorganic anions and organic weak acid peaks in law and thermodynamic properties of the carbonate system. Expand the scope of application of the coating PGC column, which was used for industrial effluent aniline compounds and anions simultaneous determination of the two-dimensional system, and also it was built to compare the system stability of AS14A in complex samples.At last, it is the first time to be used for the separation and detection of11kinds of monosaccharide, disaccharide and oligosaccharide in the Dionex eluent system. Besides, the laws of thermodynamics and its separation mechanism are explored and also its stability and practicality. The article studies the coating maintenance and repair precautions of PGC colum, which is very important for its practical use. |
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