Recovery of Hg(0) from the aqueous Hg(I/II) present in analyte solution after quantitative determination of iron

An easy and feasible approach to recover hgcl used in quantitative determination of iron values,as hg(0) was described. both hg(i) and hg(ii),present in the solution after quantitative determination of iron,was completely reduced to hg(0) by the addition of aluminium chips in more slightly excess than the stoichiometric amount. the purity of recovered hg(0) was verified by comparing the value of density with pure mercury. this simple method may be useful to remove the mercury from other waste aqueous solutions before their discharge into the environment. © 2013 suman k. giri and nigamananda das.