Premium
Plumbosolvency reduction by high pH and low carbonate—solubility relationships
Author(s) -
Schock Michael R.,
Gardels Marvin C.
Publication year - 1983
Publication title -
journal ‐ american water works association
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.466
H-Index - 74
eISSN - 1551-8833
pISSN - 0003-150X
DOI - 10.1002/j.1551-8833.1983.tb05072.x
Subject(s) - solubility , carbonate , chemistry , aqueous solution , chlorine , inorganic chemistry , leaching (pedology) , dissolution , geology , organic chemistry , soil science , soil water
Experiments were conducted to study the effect of a pH ≥ 9.0 and a low total inorganic carbonate (TIC) concentration of 10‐80 mg as CaCO 3 /L on lead solubility. The results were compared with those of earlier experiments in which the pH was 8.0–8.5. In the experiments that had pHs ≥ 9.0, lead leaching was reduced, as was consumption of both residual free chlorine and dissolved oxygen. The results closely followed the predictions of a solubility model that allowed for aqueous lead complexation and control by the solid basic lead carbonate under the experimental pH and TIC conditions.