Retrospective determination of fallout radionuclides and ²³⁶U/²³⁸U, ²³³U/²³⁶U and ²⁴⁰Pu/²³⁹Pu atom ratios on air filters from Vienna and Salzburg, Austria

Autor(en)

G. Wallner, H. Uguz, M. Kern, F. Jirsa, K. Hain

Abstrakt

¹³⁷Cs and ²⁴¹Pu (via ²⁴¹Am) concentrations were measured γ-spectrometrically on air filters from the early 1960s (mainly from 1964–66) from Vienna, Austria, and an alpine station in Salzburg, Austria. Accelerator mass spectrometry (AMS) was used to determine ²⁴⁰Pu/²³⁹Pu, ²³⁶U/²³⁸U and ²³³U/²³⁶U atom ratios as well as ²³⁶U, ²³⁹Pu and ²⁴⁰Pu atom concentrations. The maximum ²³⁶U/²³⁸U atom ratio of these unique undisturbed global fallout samples was (1.19 ± 0.31) × 10⁻⁵ in spring 1964. The ²³³U/²³⁶U atom ratios were found within (0.15–0.49) × 10⁻² and indicate that the weapons tests of the early 1960s can be excluded as ²³³U source. The ²³⁶U/²³⁹Pu atom ratios were calculated in the range of 0.22–0.48.

Organisation(en)

Institut für Anorganische Chemie, Isotopenphysik

Externe Organisation(en)

University of Johannesburg (UJ), Universität Wien

Journal

Journal of Environmental Radioactivity

Band

255

Anzahl der Seiten

8

ISSN

0265-931X

DOI

https://doi.org/10.1016/j.jenvrad.2022.107030

Publikationsdatum

12-2022

Peer-reviewed

Ja

ÖFOS 2012

104023 Umweltchemie, 104020 Radiochemie, 103039 Aerosolphysik, 103037 Umweltphysik

Schlagwörter

ASJC Scopus Sachgebiete

Environmental Chemistry, Waste Management and Disposal, Pollution, Health, Toxicology and Mutagenesis

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/9182ba20-bc63-49a5-9fed-7be8c9e0051e