Question

1-what type of chromatography is used to separate neutral molecules and ions under the influence of an electric field?

2-If polar analytes are eluted in separations, it is best to use a ________ stationary phase.

Answer 1

Ans 1 :

Micellar electrokinetic capillary Chromatography

This type of chromatography makes use of the surfactant , due to which micelles are formed in the solution and help in the seperation of neutral molecules in presence of the applied electric field.

Ans 2 : non polar

The stationary phase is chosen on the basis of polarity of the analyte to be eluted. Basically their polarities must be opposite. So if the analyte is polar , then the stationary phase must be non polar hydrophobic.