[China Instrument Network Instrument R&D] Recently, Professor Cui Hairong of Wuchang University of Technology successfully used ion chromatography technology to successfully determine the content of fluorine and chlorine in concentrates, and became the global convener and person in charge of the development of international standards for this technology.
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Ion chromatography is a kind of high-performance liquid chromatography, so it is also called high-performance ion chromatography (HPIC) or modern ion chromatography. Its main difference from traditional ion exchange chromatography is that the resin has a high degree of crosslinking and low The exchange capacity and the injection volume are very small. The continuous emissive conductivity detection of the leachate is usually carried out by the plunger pump delivering the eluent.
In addition, ion chromatography is mainly used for the analysis of environmental samples, including the anions and cations in surface water, drinking water, rainwater, domestic sewage, and industrial wastewater, acid deposition, and atmospheric particulates, and water and reagents related to the microelectronics industry. Trace impurities in the analysis.
According to reports, fluorine and chlorine in copper, lead, and zinc concentrates will not only corrode pipes during the smelting process, but also cause pollution in the atmosphere after high-temperature calcination. The new ion chromatography technology developed by the team of Cui Hairong, a professor at Wuchang University of Technology, can quickly detect harmful elements and can help workers find fluorine and chlorine in the concentrates early so as to solve problems.
At present, the international method for determining the content of chlorine in concentrates is not perfect, and Cui Hairong uses ion chromatography technology to have a good effect on the determination of low levels of chlorine in concentrates, and as a national standard, it has subsequently been recognized by other countries. .
(Original title: Chromatography Technique for Determining Concentrate Fluorine and Chlorine)
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