Page 64 - Statistics presented by Dr. Sara Ismail Aborass

9/8/2023

2) Co- precipitation
A) Isomorphic inclusion (mixed
crystal formation)
• Two compounds are isomorphic if
they possess the same type of:
• 1- formula
• 2- bonding
• 3-crystal structure
• 4-crystal lattice spacing

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• If analyte ppt and impurity are isomorphic, one
ion in the crystal lattice of the ppt is replaced by
an ion of the impurity

• The coprecipitated contaminant can fit into the
crystal lattice without causing strains or
distortions

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