Research of Detection of Chinalco in Pure Titanium Tetrachloride

Much alkali and metal ions were used to generate precipitation to separate from aluminium. At pH 4. 7,aluminum and aluminum complex reagents generated red ternary complex. The maximum absorption wavelength of530 nm,color depth of the aluminum content in the solution was proportional to the aluminum content,so as to colorimetric determination of aluminium. Aluminum content in 1 ~ 50 μg( 50 mL) had good linear absorbance,samples for testing the relative standard deviation was 0. 45%,and standard addition recovery was 98. 4% ~ 101. 3%.