1. Preface

   EditorialNotes Pages: 3 - 3

2. A bone ash standard for⁹⁰Sr,²¹⁰Pb,²¹⁰Po, uranium and the actinides

   • P. W. Krey
   • M. S. Feiner
   • J. M. R. Hutchinson

   OriginalPaper Pages: 5 - 18

3. Development of a so-called hour method for analysis of plutonium in soil samples

   • J. M. Godoy
   • M. L. Godoy
   • D. C. Lauria

   OriginalPaper Pages: 19 - 26

4. Simultaneous biphasic liquid scintillation determination of americium and plutonium

   • A. M. Bomben
   • H. E. Equillor
   • A. A. Oliveira

   OriginalPaper Pages: 27 - 37

5. Natural and artificial radionuclides in soils from Paraná State, Brazil

   • L. A. Schuch
   • D. J. R. Nordemann
   • A. Zago

   OriginalPaper Pages: 39 - 49

6. Radionuclides in macro algae at Monaco following the Chernobyl accident

   • E. Holm
   • S. Ballestra
   • G. Ardisson

   OriginalPaper Pages: 51 - 72

7. An improved method for determination of uranium isotopic composition in urine by alpha spectrometry

   • Celina Lopes Duarte
   • Marlene Sotto-Mayor Flues Szeles

   OriginalPaper Pages: 73 - 79

8. Occupational exposure to thorium air monitoring

   • K. M. A. Dias Da Cunha
   • J. L. Lipsztein
   • C. L. Barros Leite

   OriginalPaper Pages: 81 - 89

9. Radiochemical determination of technetium-99

   • A. E. Nevissi
   • M. Silverston
   • J. H. Kaye

   OriginalPaper Pages: 91 - 99

10. Correlation of natural and artificial radionuclides in soils with pedological, climatological and geographic parameters

    • L. A. Schuch
    • D. J. R. Nordemann
    • B. Pecequilo

    OriginalPaper Pages: 101 - 106

11. Plutonium-239, 240 atmospheric radioactivity measurements at Mururoa from 1986 to 1991

    • Y. Bourlat
    • J. -C. Millies-Lacroix
    • B. Dunoyer

    OriginalPaper Pages: 107 - 120

12. Interpretation of thorium bioassay data

    • L. M. Q. C. Julião
    • A. M. G. F. Azeredo
    • J. L. Lipsztein

    OriginalPaper Pages: 121 - 126

13. A semi-automated approach for processing and extracting low-level plutonium from soil

    • S. A. Ibrahim
    • S. B. Webb
    • F. W. Whicker

    OriginalPaper Pages: 127 - 138

14. Determination of the distribution coefficients for¹³⁴Cs,⁶⁰Co and²³⁴Th in the Pinheiros River sediment-water

    • M. F. Lima
    • B. P. Mazzilli

    OriginalPaper Pages: 139 - 147

15. Determination of technetium-99 and neptunium-237 in environmental samples by inductively coupled plasma mass spectrometry

    • Sh. Sumiya
    • Sh. Morita
    • M. Kurabayashi

    OriginalPaper Pages: 149 - 159

16. Characterization of plutonium contamination at the former nuclear weapons testing range, at Maralinga in South Australia

    • M. B. Cooper
    • P. A. Burns
    • G. A. Williams

    OriginalPaper Pages: 161 - 184

17. Determination of chromium in aquatic environment by substoichiometric thermal neutron activation analysis

    • S. D. Jadhav
    • Z. R. Turel

    OriginalPaper Pages: 185 - 191

18. Medical and organizational aspects related to the Goiânia accident

    • A. R. Oliveira

    OriginalPaper Pages: 193 - 209