The effect of orthophosphate on the gravimetric determination of pyrophosphate.
The effect of orthophosphate on the precipitation of zinc pyrophosphate has been examined and it is shown that co-precipitation of the orthophosphate at pH 3.4-3.6 is serious if the orthophosphate concentration is >0.02M. Even with lower concentrations an error of up to +2% may occur.
Bozadziev
P
P
Chemico-Technological Institute Sofia 56, Darvenitza Bulgaria.
Georgieva
M
M
Ilcheva
L
L