Attacking a sample plug with hydrochloric acid. After separation of the silica, precipitation of the titanium using cupferron. Separation of vanadium by melting the residue with sodium carbonate and leaching with water. Putting titanium into solution by melting titanium dioxide with potassium pyrosulphate and forming the colored complex with hydrogen peroxide. Measurement of the absorbance of the complex at 420 to 430 mm. Reactive. Method.
UNI 6708-1970 history
1970UNI 6708-1970 Chemical analysis of manganese ores. Determination of titanium.