Capillary electrophoresis

what are the two types of sample introduction in capillary electrophoresis?

• electrochemical injection

• Electrokinetic injection

• Thermal Injection

• Pressure Injection

which of the following is NOT the type of detector used in capillary electrophoresis?

• Absorption

  spectrometry

• Fluorescence spectrometry

• Mass spectrometry

• Microspectrometry

Capillary electrophoresis can separate.....

• numerous species

• one species only

• uncharged micromolecule

• charged macromolecules

What's the sample volume range for capillary electrophoresis?

• 1-10 mL

• 1-10 nL

• 0.1-10 nL

• 0.1-10 nL

Capillary electrophoresis is high speed and gives high resolution.

• True

• False

What affects the rate of migration?

• temperature

• charge-to-size ratio

• pH

• column type

Why is the outside wall of the capillary coated in polyamide?

• to provide durability, flexibility, and stability

• to speed up the separation

• it looks nicer that way

• to keep out stray light

What can be done to allow rapid separation of anions?

• increase the pH

• increase the temperature

• reverse the voltage polarity

• increase the capillary length

How is the electric field (E) related to the voltage (V) and capillary length (L)?

• It is directly proportional to both

• It is inversely proportional to both

• It is directly proportional to the voltage and inversely proportional to the length

• It is directly proportional to the length and inversely proportional to the voltage

True or False. Capillary electrophoresis is performed by injecting a small band of the sample into and aqueous buffer contained in a narrow tube then applying a voltage across the buffer.

• True

• False