Derivation of partition relationships to calculate Cd, Cu, Ni, Pb, Zn solubility and activity in soil solutions

Research output: Book/ReportReportProfessional

Abstract

The distribution of heavy metals (Cd, Cu, Ni, Pb and Zn) between soil and soil solution was measured in more than 1400 soil - solution samples. These samples reflect the variability that occurs within the Netherlands and covers all major soil types. The distribution of metals between solid phase (adsorbed) and the soil solution was described using an extended Freundlich equation taking into account the impact of organic matter, clay, pH and Dissolved Organic Carbon. Apart from this, the impact of Fe and Al oxides was tested. The free ionic activities were also calculated from the data and partition relationships were derived for both total dissolved metal contenrations and free metal ion activities. The results show that an extended Freundlich equation is able to represent the wide range of total dissolved concentrations and free ion activities that are encountered in the database. For the metals Pb and Cu, the uncertainty in the predictions is, however, rather high. Further model improvement is required for these metals.
Original languageEnglish
Place of PublicationWageningen
PublisherAlterra
Number of pages75
Publication statusPublished - 2004

Publication series

NameAlterra-report
PublisherAlterra
No.305
ISSN (Print)1566-7197

Keywords

  • soil chemistry
  • cadmium
  • copper
  • trace elements
  • nickel
  • transition elements
  • lead
  • zinc

Fingerprint Dive into the research topics of 'Derivation of partition relationships to calculate Cd, Cu, Ni, Pb, Zn solubility and activity in soil solutions'. Together they form a unique fingerprint.

Cite this