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Table 3 Possible calcium phosphate phases and their calculated saturation indices (log Q/Kso)

From: Inducing mineral precipitation in groundwater by addition of phosphate

  

log Q/K

   

AM11

Ca3(PO4)1.87(HPO4)0.2

AM21

Ca3(PO4)1.87(HPO4)0.2

Ca3(PO4)2 β2

OCP1

Ca8H2(PO4)6 ·5H2O

Brushite2

CaHPO4·2H2O

HAP2

Ca5(PO4)3(OH)

-0.126

2.624

3.294

3.568

0.239

11.838

  1. 1 Thermodynamic data used in Minteq log Q/Kso calculations comes from Christofferson et al., 1990
  2. 2 Thermodynamic data used in Minteq log Q/Kso calculations comes from Smith et al., 2003
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Geochemical Transactions

ISSN: 1467-4866

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