Assume that the Pitdown forger has also used group 1 and group 2 cations to stain the bones. How could this potentially affect your results?

Assume that the Pitdown forger has also used group 1 and group 2 cations to stain the bones. How could this potentially affect your results?” and “How could any interference (if possible) from the group 1 and group 2 ions be avoided?”.