摘要
建立了一套填充毛细管液相色谱－毛细管气相色谱在线联用的二维色谱分离体系．联用接口由十通阀和多位阀构成，将经填充毛细管液相色谱分离后的样品各馏分在线准确切割和储存，并在线无损失输送至ＧＣ分析，从而实现了复杂样品的一次进样全组分的分离分析．本文对该体系的各部件及操作条件进行了详细的考察和优化，并以柴油和变压器油为例进行了分析，结果表明，该联用体系分离分析复杂样品效果良好．
An on line coupling system of packed capillary high performance liquid chromatography(PC HPLC) with capillary gas chromatography(CGC) has been developed. The interface consists of a 10 port valve and a multi position valve, which cuts and stores fractions continuously from PC HPLC, and transfers them into the GC column separately without sample loss. An auxiliary solvent loop was used to wash the sample loop of the interface. The dead volume that cannot be washed is less than 0.1 μL. The factors that affect the performance of the system were investigated in detail. The error of the reproducibility of the system is less than 1.5% relative standard deviation. The analysis of diesel fuel and transformer oil were demonstrated, which shows the strong separation power and application potential of this system for complex compounds.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
1998年第4期520-525,共6页
Chemical Journal of Chinese Universities
