Page 49 - Statistics presented by Dr. Sara Ismail Aborass
P. 49
9/8/2023
[4] METALS IN WATER
[A] ALUMINIUM
* SOURCES :
Aluminium salts are added during the purification of
drinking water to flocculate suspended substances and
contaminants.
* The maximum aluminium limit allowed (remaining
after water treatment)is 0.2 mg/l in drinking water.
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* DETERMINATION :
"Aluminone reagent" :
Aluminium reacts with ammonium salt of
aurintricarboxylic acid "Aluminon, to form a
red lake.
HO HO
CO C O
HO
O O
HO O
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