for application to alloy steels employed in nuclear technology , the elements to be determined must be separated from the matrix by extraction as their covalent bromides into toluene from concentrated sulphuric acid and back-extracted into the base electrolyte ( 1.5m hcl + 0.012m br ( - ) + 0.03m hydrazinium sulphate ) .
C0002154
alloy
C0038239
steels