Characterization, Dissolution and Solubility of Mimetite[Pb 5 (AsO 4 ) 3 Cl] at 25 o C
2013
Mimetite [Pb5(AsO4)3C was firstly synthesized by precipitation and characterized by various techniques, and then the batch dissolution experiment was conducted at 25°C and different initial pHs. XRD and SEM analysis indicated that the solid was indistinguishable before and after the dissolution. For the dissolution at the initial pH=2, the aqueous arsenate and lead concentration decreased firstly with time and reached a steady state after 480h. For the dissolution at the initial pH=4 and 6, the aqueous arsenate and lead concentrations varied between 0-0.0005mmol/L and 0-0.0008mmol/L, respectively.
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