Chromatography

Question 1

Chromatography

Answer 1

separation technique in which a mobile phase carrying a mixture moves in contact with a selectively absorbent stationary phase.

Question 2

Principle of gas chromatography

Answer 2

a gaseous mobile phase is in contact with a stationary phase and separation of the mixture occurs as a result of selective absorbance of the components of the mixture on the stationary phase.

Question 3

Principle of high-performance liquid chromatography

Answer 3

a liquid mobile phase is in contact with a stationary phase and separation of the mixture occurs as a result of selective absorbance of the components of the mixture on the stationary phase.

Question 4

Principle of infra-red spectrometry

Answer 4

organic compounds absorb infra-red radiation of certain frequencies.

Question 5

Principle of ultraviolet absorption spectrometry

Answer 5

absorbance is directly proportional to the concentration of a substance