C8__Chemical-Analysis

Definition

Chromatography is a separation technique based on different solubilities. Different substances will be more attracted to the mobile phase - the solvent or the stationary phase - the paper. The value of substance is a measure of solubility and is calculated with

since different substances will have different chromatography can be used to identify substances by looking up in a database of known measured values.


Pure vs Impure

Pure substances will produce a single spot. Formulations will produce multiple spots each corresponding to the a pure substance present in the formulation