University Chemistry ›› 2019, Vol. 34 ›› Issue (7): 73-78.doi: 10.3866/PKU.DXHX201901021

• Chemistry Laboratory • Previous Articles     Next Articles

Experimental Design and Exploration of Separating n-Hexane and Cyclohexane by GC

Tingting LI1,Yingai PIAO2,Jing ZHANG3,Jingdong FENG1,Yantao SUN1,*()   

  1. 1 College of Chemistry, Jilin Normal University, Siping 136000, Jilin Province, P. R. China
    2 Analysis and Testing Center, Yanbian University, Yanji 133002, Jilin Province, P. R. China
    3 Middle School of Experimental High School, Meihekou 135000, Jilin Province, P. R. China
  • Received:2019-01-18 Published:2019-03-28
  • Contact: Yantao SUN
  • Supported by:


The experiment of separating low toxic n-hexane and cyclohexane by traditional gas chromatography was improved with orthogonal experimental design. The effect of sample quantity, vaporization chamber temperature, detector temperature, column temperature, line velocity and separability of the split ratio were examined. Through the experiment, students could understand the use and maintenance of gas chromatography instruments. At the same time, they could understand separability and column efficiency of chromatography.

Key words: Gas chromatography, Orthogonal experimental design, n-Hexane, Cyclohexane