Complexometric determination of magnesium in nodular cast iron and alloyed cast iron roll samples.
A complexometric method for the determination of magnesium in nodular cast iron, alloyed cast iron and roll samples has been developed. The bulk of the iron is removed by ether extraction and the phosphate as zirconium phosphate. The other elements are removed by extraction with dithiocarbamate into chloroform. Magnesium is then titrated with EDTA at pH 10, with Eriochrome Black T as indicator. Calcium interferes, but is very rarely present in such cast iron samples.
Banerjee
S
S
Research & Control Laboratory, Durgapur Steel Plant, Durgapur-3, West Bengal, India.
Dutta
R K
RK