大学化学 >> 2019, Vol. 34 >> Issue (7): 73-78.doi: 10.3866/PKU.DXHX201901021

化学实验 上一篇    下一篇

气相色谱法分离正己烷和环己烷的实验设计与教学探索

李亭亭1,朴英爱2,张静3,冯静东1,孙艳涛1,*()   

  1. 1 吉林师范大学化学学院, 吉林 四平 136000
    2 延边大学分析测试中心, 吉林 延吉 133002
    3 吉林省梅河口市实验高级中学, 吉林 梅河口 135000
  • 收稿日期:2019-01-18 发布日期:2019-03-28
  • 通讯作者: 孙艳涛 E-mail:1979yanzi@163.com
  • 基金资助:
    吉林师范大学教育教学研究项目(2017018);吉林师范大学教育教学研究项目(2017019);延边大学教育科学“十三五”规划项目(2017030)

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 E-mail:1979yanzi@163.com
  • Supported by:
    吉林师范大学教育教学研究项目(2017018);吉林师范大学教育教学研究项目(2017019);延边大学教育科学“十三五”规划项目(2017030)

摘要:

对传统气相色谱分离混合物的实验进行改进,运用正交试验分离毒性较低的正己烷和环己烷。以分离度和峰的个数为评价指标,考查进样量、汽化室温度、检测器温度、柱温、线速度和分流比六个因素对色谱分离的影响。通过实验使学生掌握气相色谱仪器的构造和操作,加深其对柱效及分离度等理论知识的理解。

关键词: 气相色谱, 正交试验, 正己烷, 环己烷

Abstract:

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

MSC2000: 

  • G64