POLAROGRAPHIC-DETERMINATION OF TITANIUM IN NICKEL POWDERS

The article describes a procedure for the polarographic determination of titanium without the preseparation of nickel and other elements, based on the polarography of the oxalate complex of titanium(IV), at pH 1 in an ac regime. It was found that in a supporting electrolyte consisting of a mixture of a 4% oxalic and 0. 72 M sulfuric acids a linear relationship exists in the presence of nickel between the height of the titanium peak and its concentration in the region from 1 multiplied by (times) 10** minus **4 to 8 multiplied by (times) 10** minus **2 g/liter, whereby the straight calibration line passes through the origin of the coordinates. The work was performed on polarographs in the ac trapezoidal regime with a dropping mercury electrode. Elements such as aluminum, magnesium, chromium, and cobalt do not interfere in the determination.