也称“层析法”。一种利用混合物中诸组分在两相间的分配原理以获得分离的方法chromatography

• 研究人员把采集来的空气，采用称重法和离子色谱法分析里面PM2.5的构成。

  Using the gravimetric method and ion chromatography, researchers analyzed the PM2.5 structure of air collected.

• 技术人员成功开发出气相色谱法测定焦化苯中噻吩含量的新方法。

  Technologists successfully developed a new method of measuring the chromatographic emission in the thiophene content of coking benzene.