CAJ | 학술논문

以聚乙二醇共价键接枝多壁碳纳米管(PEG-g-MWCNTs)作为色谱分离介质,采用溶胶-凝胶法制备了一种新型的毛细管气相色谱柱.考察了PEG-g-MWCNTs溶胶-凝胶固定相的热稳定和柱效的影响因素以及对芳香烃、酯等有机混合物分离性能.结果表明,该柱在180℃柱温下,固定相流失很少,具有较好的热稳定性.实验以辛醇作为测试物,测得柱与柱之间( n=5)保留时间的RSD小于4.5%.使用6个月后保留时间的RSD小于1.30%.
이취을이순공개건접지다벽탄납미관(PEG-g-MWCNTs)작위색보분리개질,채용용효-응효법제비료일충신형적모세관기상색보주.고찰료PEG-g-MWCNTs용효-응효고정상적열은정화주효적영향인소이급대방향경、지등유궤혼합물분리성능.결과표명,해주재180℃주온하,고정상류실흔소,구유교호적열은정성.실험이신순작위측시물,측득주여주지간( n=5)보류시간적RSD소우4.5%.사용6개월후보류시간적RSD소우1.30%.
Functionalized product of PEG-g-MWCNTs was used as selective stationary phase to prepare the sol-gel columns for capillary gas chromatography.The effect factors of the thermal stability of stationary phase and column efficiency,the chromatographic separation abilities of the PEG-g-MWCNTs capillary column were studied.The experimental results showed that the columns had outstanding thermal stability at 180 ℃.The PEG-g-MWCNTs columns provided excellent run-to-run and column-to-column reproducibility,stable retention performance.Using n-octadecane as a test solute,five columns provided RSD values of 4.5%for retention time.After using six months, in forty replicate measurements using the same column,RSD values of less than 1.3%(toluene).