Lecture 10

Chromatography is a technique to separate and identify the components of a mixture

• True

• False

Three components in chromatography are the mobile phase,

stationary phase, and supporting medium

• True

• False

Stationary phase is a layer or coating on the supporting medium that interacts with the analytes

• True

• False

Analytes are usually introduced into the stationary phase stream

• True

• False

To achieve separation each analyte needs to spend different

lengths of time being retained or held by the mobile phase.

• True

• False

Chromatogram is a plot of the detector signal versus time

• True

• False

Long run times is a feature that desirable in any chromatographic separation

• True

• False

In liquid-liquid chromatography, the stationary phase

is a low volatility liquid coated onto a solid

• True

• False

Adsorption chromatography (AC) utilizes a mobile liquid or gaseous

phase that is adsorbed onto the surface of a stationary solid phase

• True

• False

Paper chromatography (PC) uses filter paper strips as carrier or inert support

• True

• False