Page 121 - Pharmaceutical Analytical Chemistry III
P. 121
1- True precipitation:
The impurity is precipitated togther
with the analyte
A) Simultaneous pption
The impurity and the analyte deposit
at the same time
Ex: AgCl (analyte) / AgBr (impurity)
(very similar Ksp so ppted at same time)
Elimination: separation or complexation
before pption
