Advertisement

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

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

Abstract

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.

Keywords

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.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    W. PENNINGTON, R.S. CAMBRAY, J.D. EAKINS, D.D. HARKNESS, Radionuclide Dating of the Recent Sediments of Blelham Tarn, Freshwater Biol. 6 (1976) 317–331.Google Scholar
  2. 2.
    I.N. SMITH, A. WALTON, Sediment Accumulation Rates and Geochronologies Measured in the Saguenay Fjord Using the210Pb Dating Method, Geochim. Cosmochim. Acta 44 (1980) 225–240.Google Scholar
  3. 3.
    F. EL-DAOUSHY, Scandinavian Limnochronolgy of Sediments and Heavy Metals, Hydrobiologia 143 (1986) 267–276.Google Scholar
  4. 4.
    F. EL-DAOUSHY, A Summary on the Lead-210 Cycle in Nature and Related Applications in Scandinavia, Environ. Inter. (1988) in press.Google Scholar
  5. 5.
    J.P. CHANTON, G.S. MARTENS, G.W. KIPPUT, Lead-210 Sediment Geochronology in a Changing Coastal Environment, Geochim, Cosmochim. Acta 47 (1983) 1791–1804.Google Scholar
  6. 6.
    H. ERLENKEUSER, K. PEDERSTAD, Recent Sediment Accumulation in Skagerrak as Depicted by210Pb Dating, Norsk Geol. Tidsskr. 2 (1984) 135–152.Google Scholar
  7. 7.
    L.K. BENNINGER, D.M. LEWIS, K.K. TUREKIAN, The Use of Natural210Pb as a Heavy Metal Tracer in the River Estuarine Sediment, In: T.M. Church (ed), Marine Chemistry in the Coastal Environment, Washington, D.C. (1975) 202–210.Google Scholar
  8. 8.
    D.P. KHARKAR, J. THOMSON, K.K. TUREKIAN, R.J. MCCAFFREY, The Distribution of Uranium and its Decay Series Nuclides and Trace Metals in a Hubbard Brook, New Hampshire Soil Profile, In: K.K. TUREKIAN, Trace Elements in Natural Waters, Annual Progress Report, AEC COO-3573-8, Yale University, New Haven, Connecticut (1974).Google Scholar
  9. 9.
    F. EL-DAOUSHY, R. GARICA-TENORIO,210Po/210Pb Speciation in Aquatic Systems and Their Deposits, Sci. Tot. Environ. 69 (1988) 191–209.Google Scholar
  10. 10.
    F.J. STEVENSON, “Humus Chemistry, John Wiley & Sons, Inc. (1982).Google Scholar
  11. 11.
    F. EL-DAOUSHY, An Ionization Chamber and a Si-detector for Lead-210 Chronology, Nucl. Instr. Meth. 188 (1981) 647–655.Google Scholar
  12. 12.
    R.W. BATTARBEE, G. DIGERFELDT, Paleoecological Studies of the Recent Development of Lake Växjösjön, Hydrobiologia 77 (1976) 330–346.Google Scholar
  13. 13.
    J.D. EAKINS, R.T. MORRISON, A New Procedure for the Determination of Lead-210 in Lake and Marine Sediments, United Kingdom Atomic Energy Authority, Harwell, AERE-R8475 (1976).Google Scholar
  14. 14.
    E.D. GOLDBERG, Geochronolgy with Lead-210, In: Radioactive Dating, IAEA, Vienna (1963) 121–131.Google Scholar

Copyright information

© Akadémiai Kiadó 1990

Authors and Affiliations

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

Personalised recommendations