Instrumental methods of analysis

Question 1

Flame emission spectroscopy (FES)

Answer 1

sample of a metal solution is placed in a flame, any light that is emitted passes through a spectroscope, the spectroscope produces a line spectrum based on the wavelength of the emitted light

Question 2

Advantages of Flame emission spectroscopy (FES)

Answer 2

identify all ions present in a mixture without any colours masking them (can happen in flame test), intensity of the line spectrum is used to measure the concentration of the ions present in the mixture

Question 3

Why are instrumental methods better than chemical test

Answer 3

accurate, rapid (tests can be automated), sensitive (only small quantities are needed)