Home Chemical Speciation of Environmentally Significant Heavy Metals with Inorganic Ligands. Part 1: The Hg2+ - Cl-, OH-, CO32-, SO42-, and PO43- Aqueous Systems (IUPAC Technical Report)
Article Publicly Available

Chemical Speciation of Environmentally Significant Heavy Metals with Inorganic Ligands. Part 1: The Hg2+ - Cl-, OH-, CO32-, SO42-, and PO43- Aqueous Systems (IUPAC Technical Report)

Published/Copyright: September 1, 2009
Download Article (PDF)
Become an author with De Gruyter Brill
Author Information
Chemistry International -- Newsmagazine for IUPAC
From the journal Chemistry International -- Newsmagazine for IUPAC Volume 27 Issue 4

_

Chemical Speciation of Environmentally Significant Heavy Metals with Inorganic Ligands. Part 1: The Hg2+ - Cl-, OH-, CO32-, SO42-, and PO43- Aqueous Systems (IUPAC Technical Report)

Kipton J. Powell, Paul L. Brown, Robert H. Byrne, Tamás Gajda, Glenn Hefter, Staffan Sjöberg, and Hans Wanner

Pure and Applied Chemistry

Vol. 77, No. 4, pp. 739–800 (2005)

This document presents a critical evaluation of the equilibrium constants and reaction enthalpies for the complex formation reactions between aqueous Hg(II) and the common environmental inorganic ligands Cl-, OH-, CO32-, SO42-, and PO43-. The analysis used data from the IUPAC Stability Constants database, SC-Database, focusing particularly on values for 25°C and perchlorate media. Specific ion interaction theory (SIT) was applied to reliable data available for the ionic strength range Ic≤3.0 mol dm-3.

Recommended values of log10βp,q,r° and the associated reaction enthalpies, ΔrHm°, valid at Im = 0 mol kg-1 and 25°C, were obtained by weighted linear regression using the SIT equations. Also reported are the equations and specific ion interaction coefficients required to calculate log10βp,q,r values at higher ionic strengths and other temperatures. A similar analysis is reported for the reactions of H+ with CO32- and PO43-. Diagrams are presented to show the calculated distribution of Hg(II) amongst these inorganic ligands in model natural waters. Under typical environmental conditions, Hg(II) speciation is dominated by the formation of HgCl2(aq), Hg(OH)Cl(aq), and Hg(OH)2(aq).

www.iupac.org/publications/pac/2005/7704/7704x0739.html

_

Page last modified 17 June 2005.

Copyright © 2003-2005 International Union of Pure and Applied Chemistry.

Questions regarding the website, please contact edit.ci@iupac.org

Published Online: 2009-09-01
Published in Print: 2005-07

© 2014 by Walter de Gruyter GmbH & Co.

Articles in the same Issue

  1. Masthead
  2. From the Editor
  3. Contents
  4. Assessing the IUPAC
  5. The International Chemistry Olympiad
  6. Public Images of Chemistry
  7. IUPAC History Preserved
  8. Freedom to Publish
  9. InChl 1.0 Release
  10. Samsung Funds IUPAC Programs for Young Chemists
  11. 2005 IUPAC Prize for Young Chemists
  12. Honoring A Hero
  13. IUPAC Elections
  14. Wolfram vs. Tungsten
  15. Reply from Ture Damhus
  16. Remediation Technologies for the Removal of Arsenic from Water and Wastewater
  17. Global Availability of Information on Agrochemicals
  18. Towards a Holistic Mechanistic Model for Reversible Addition Fragmentation Chain Transfer (RAFT) Polymerizations
  19. Guidelines for Potentiometric Measurements in Suspensions
  20. Design of Polymer Education Materials for French-Speaking Countries
  21. Provisional Recommendations
  22. High-Temperature Mass Spectrometry: Instrumental Techniques, Ionization Cross- Sections, Pressure Measurements, and Thermodynamic Data (IUPAC Technical Report)
  23. Chemical Speciation of Environmentally Significant Heavy Metals with Inorganic Ligands. Part 1: The Hg2+ - Cl-, OH-, CO32-, SO42-, and PO43- Aqueous Systems (IUPAC Technical Report)
  24. Crop Protection Chemistry in Latin America
  25. Biotechnology
  26. Chemical Sciences in Changing Times: Visions, Challenges, and Solutions
  27. XI International IUPAC Symposium on Mycotoxins and Phycotoxins
  28. Metallothionein
  29. Chemistry for Agriculture
  30. Pesticide Chemistry
  31. Analytical Sciences
  32. Chemical Education
  33. Coordination Chemistry
  34. High Temperature Materials
  35. Mark Your Calendar
https://doi.org/10.1515/ci.2005.27.4.33b

Articles in the same Issue

  1. Masthead
  2. From the Editor
  3. Contents
  4. Assessing the IUPAC
  5. The International Chemistry Olympiad
  6. Public Images of Chemistry
  7. IUPAC History Preserved
  8. Freedom to Publish
  9. InChl 1.0 Release
  10. Samsung Funds IUPAC Programs for Young Chemists
  11. 2005 IUPAC Prize for Young Chemists
  12. Honoring A Hero
  13. IUPAC Elections
  14. Wolfram vs. Tungsten
  15. Reply from Ture Damhus
  16. Remediation Technologies for the Removal of Arsenic from Water and Wastewater
  17. Global Availability of Information on Agrochemicals
  18. Towards a Holistic Mechanistic Model for Reversible Addition Fragmentation Chain Transfer (RAFT) Polymerizations
  19. Guidelines for Potentiometric Measurements in Suspensions
  20. Design of Polymer Education Materials for French-Speaking Countries
  21. Provisional Recommendations
  22. High-Temperature Mass Spectrometry: Instrumental Techniques, Ionization Cross- Sections, Pressure Measurements, and Thermodynamic Data (IUPAC Technical Report)
  23. Chemical Speciation of Environmentally Significant Heavy Metals with Inorganic Ligands. Part 1: The Hg2+ - Cl-, OH-, CO32-, SO42-, and PO43- Aqueous Systems (IUPAC Technical Report)
  24. Crop Protection Chemistry in Latin America
  25. Biotechnology
  26. Chemical Sciences in Changing Times: Visions, Challenges, and Solutions
  27. XI International IUPAC Symposium on Mycotoxins and Phycotoxins
  28. Metallothionein
  29. Chemistry for Agriculture
  30. Pesticide Chemistry
  31. Analytical Sciences
  32. Chemical Education
  33. Coordination Chemistry
  34. High Temperature Materials
  35. Mark Your Calendar
Sign up now to receive a 20% welcome discount
Institutional Access
How does access work?
Have an idea on how to improve our website?
Please write us.
© 2025 De Gruyter Brill
Downloaded on 11.9.2025 from https://www.degruyterbrill.com/document/doi/10.1515/ci.2005.27.4.33b/html
Scroll to top button