Question

Apart from GF AAS and direct titrations, describe three techniques for the analysis of metal ions.

Answer 1

X-ray Flurorescence (XRF)

XRF can be used to analyze the metal ions.

In XRF, an incident X-ray knocks out the core electrons of metal ions, this will leave a vacany in the inner-shell orbital of the metal ion.

The electron from an orbital of higher energy jumps into the vacant inner-shell orbital by emmiting a photon of wavelength corresponding to difference in energy.

The wavelength of x-ray photon thus, emitted will have information about the metal ion (mosley's law).