abstract |
A method for completely dissolving mineral and/or powdered realgar (tetrarsenictetrasulfide) in an aqueous solution. The method comprises the following steps of incubation of realgar in an acidic environment for 24 h, the subsequent dilution of the material derived from the step of incubation in NaOH/pH:13-14, and the subsequent further dilution of the material derived from the above dilution of the material in NaOH/pH:12-13. |