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为探索溶剂或单体中微量杂质分析方法,在SP—2305E型色谱仪上设计了二维气相色谱流程,采用在线微型六通阀进行流路切换,用微型中间陷阱进行“再进样”.用自制石墨化碳黑毛细管柱和不同极性的填充预柱,对氯甲烷中微量杂质进行了分离和定性.
In order to explore the method for the analysis of trace impurities in solvents or monomers, a two-dimensional gas chromatographic scheme was designed on the SP-2305E chromatograph. The on-line micro-six-way valve was used to switch the flow path and the micro-traps were used for “re-injection”. The trace impurities in methyl chloride were separated and characterized by self-made graphitized carbon black capillary columns and packed precolumn with different polarities.