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(a–c) XRD and (d–f) FTIR spectra of lead particles from CSTR experiments after reactions with orthophosphate-tripolyphosphate, orthophosphate-trimetaphosphate, and orthophosphate-hexametaphosphate at pH 7.5 and DIC 5 mg C L−1. Prominent mineral or IR peaks are identified above. XRD lead mineral peaks are identified as follows: C—cerussite, Hc—hydrocerussite, and Hpy—hydroxypyromorphite.
