210Pb(210Po) speciation of aquatic deposits: Refinement and utility

  • F. El-Daoushy
  • R. Garcia-Tenorio


A refined chemical procedure for speciation studies of sediments has been thoroughly examined. The suggested method, although only tested on210Pb (210Po), could be applied to other chemical species, especially heavy metals and radioactive nuclides. Successive dissolutions using dilute HC1 (1–2.5%) and NaOH (0.5–1%) proved that the geochemistry of fulvic, humic, and mineral compounds plays an important role in the mobility, transport, and accumulation of210Pb in various aquatic systems. This work demonstrates that210Pb, as well as analogous isotopes and metals-based dating and tracing applications, could be further improved and extended using proper speciation techniques. The procedure given here allows not only evaluation of supported and unsupported210Pb but also the resolution of anomalies in modelling biogeochemical cycles.


Heavy Metal Inorganic Chemistry Geochemistry 210Pb Aquatic System 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Akadémiai Kiadó 1990

Authors and Affiliations

  • F. El-Daoushy
    • 1
  • R. Garcia-Tenorio
    • 1
  1. 1.Department of PhysicsUppsala UniversityUppsalaSweden

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