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Stability of Lead(II) Arsenates

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Summary.

 Predictions of lead arsenate solubility and thermodynamic stability have been based on the value of the solubility constant for a precipitate with the general composition Pb3(AsO4)2. The solubility of this precipitate is high and lead arsenate is considered to be unsuitable for lead and arsenic control in the environment. Standard Gibbs energy of formation for bayldonite, duftite, mimetite, philipsbornite, and schultenite can be found in the literature from solubility studies. From these data, stability diagrams were established for the environmentally relevant lead containing solid phases – anglesite, cerussite, schultenite, and mimetite. The diagrams lead to the conclusion that mimetite is a lead arsenate that can be used for remediation techniques.

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Authors and Affiliations

  1. Department of Chemistry, University of Aveiro, P-3810-193 Aveiro, Portugal, , , , , , PT

    Maria Clara F. Magalhães & Maria Celina M. Silva

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  1. Maria Clara F. Magalhães
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  2. Maria Celina M. Silva
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Corresponding author. E-mail: mclara@dq.ua.pt

Received October 11, 2002; accepted October 30, 2002 Published online April 7, 2003

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ID="a" Dedicated to Professor Heinz Gamsjäger on the occasion of his 70th birthday.

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Magalhães, M., Silva, M. Stability of Lead(II) Arsenates. Monatshefte für Chemie 134, 735–743 (2003). https://doi.org/10.1007/s00706-002-0581-9

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  • DOI: https://doi.org/10.1007/s00706-002-0581-9

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