Anodic stripping voltammetric determination of some trace elements in portland cement and the electrostatic precipitator dust

Voltammetric methods have been successfully used for the simultaneous deter mination of minor and trace elements in cement industry. This is based on t he analysis of water leach of the cement and the electrostatic precipitator dust samples using the mercury drop electrode in the anodic direction. Thi s analytical procedure has both good selectivity and very high sensitivity. The ions detected and determined in Portland cement and electrostatic prec ipitator dust using these techniques axe Pb(II), Zn(II), TI(I), and Sn(II). It is mainly observed that the concentrations of these ions under investig ation differ greatly in Portland cement from the electrostatic precipitator dust. The main component in clinker structure is the impure tricalcium silicate ( C3S, alite) which is responsible mainly for the strength of the cement afte r hardening. The impure dicalcium silicate (B-C2S, belite) is established w ith respect to other phases by foreign ions in solid solution.