CAJ | 학술논문

发展了一种采用毛细管气相色谱柱切割-反吹技术分析汽油中芳烃的方法.利用强极性毛细管预柱将芳烃保留至n-C10的脂肪族化合物之后,并将其反吹到非极性毛细管柱中按沸点详细分离分析.该方法使预柱先流出的组分和分析柱流出的组分通过一个微型三通进入同一检测器中,因此可用归一化方法定量分析汽油中的芳烃.该方法可在15 min内完成汽油中苯至C10芳烃的分析,结果的相对标准偏差(RSD)≤3%,切割误差为±5 s时分析结果的RSD≤4%.文中还对该方法的装置和部分应用进行了讨论.
발전료일충채용모세관기상색보주절할-반취기술분석기유중방경적방법.이용강겁성모세관예주장방경보류지n-C10적지방족화합물지후,병장기반취도비겁성모세관주중안비점상세분리분석.해방법사예주선류출적조분화분석주류출적조분통과일개미형삼통진입동일검측기중,인차가용귀일화방법정량분석기유중적방경.해방법가재15 min내완성기유중분지C10방경적분석,결과적상대표준편차(RSD)≤3%,절할오차위±5 s시분석결과적RSD≤4%.문중환대해방법적장치화부분응용진행료토론.
A simple and efficient method based on the technique of capillary column switching-back flushing was developed for the detailed analysis of aromatic hydrocarbons in gasoline. The early eluting components from a pre-column and the components of interest eluting from an analytical column are all directed to a flame ionization detector through a tee piece, which facilitates the quantitation of aromatic hydrocarbons in gasoline by normalization method. Real samples were analyzed and RSD≤3%. The operation is simple and easy, and the switching time window is ±5 s.