Fig. 3From: Characterization, dissolution and solubility of the hydroxypyromorphite–hydroxyapatite solid solution [(PbxCa1−x)5(PO4)3OH] at 25 °C and pH 2–9Field emission scanning electron micrographs (FE-SEM) and transmission electron microscope (TEM) images of the hydroxypyromorphite–hydroxyapatite solid solution [(PbxCa1−x)5(PO4)3OH] before (a) and after dissolution at 25 °C and an initial pH of 2.00 for 300 days (b)Back to article page