Journal of Radioanalytical Chemistry

, Volume 24, Issue 2, pp 321–326 | Cite as

An isotope dilution method for environmental lead determinations

  • C. L. Branquinho
  • V. J. Robinson


A method is described for the use of212Pb to measure overall recovery in lead analyses. Other modifications of published procedures are also outlined. Most difficulties occur with samples containing small amounts (<10 μg) of Pb. In addition to low recovery factors, spectra are often obscured by the presence of dithizone oxidation product: a procedure for dealing with this is given.


Dithizone Tracer Solution Isotope Dilution Method Sodium Metabisulphite Lead Analysis 
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  1. 1.
    E. B. SANDELL, Colorimetric Determination of Traces of Metals, 3rd ed., Interscience Inc., New York, 1959.Google Scholar
  2. 2.
    C. L. BRANQUINHO, M. Sc. Thesis, COPPE-Universidade Federal do Rio de Janeiro, December 1973.Google Scholar
  3. 3.
    C. L. BRANQUINHO, V. J. ROBINSON, to be published.Google Scholar
  4. 4.
    Our thanks to Dr. A. G. DA SILVA of I.E.N. for providing the emanating source.Google Scholar
  5. 5.
    Calculated from the spectrum e.g. as given on p. 165 of Ref. 1.Google Scholar

Copyright information

© Akadémiai Kiadó 1975

Authors and Affiliations

  • C. L. Branquinho
    • 1
  • V. J. Robinson
    • 1
  1. 1.COPPEUniversidade Federal do Rio de Janeiro and Instituto de Engenharia NuclearRio de JaneiroBrazil

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