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Updated: May 31, 2026

Measuring Carbon-based Contaminant Mineralization Using Combined CO2 Flux and Radiocarbon Analyses
Published on: October 21, 2016
Temporal changes of 7Be, 137Cs and 210Pb activity concentrations in surface air at Monaco and their correlation with
Mai K Pham1, Maria Betti, Hartmut Nies
1Environment Laboratories, International Atomic Energy Agency, MC 98000, Monaco. m.pham@iaea.org
Abstract:
Results of analysis of (7)Be, (137)Cs and (210)Pb on aerosol filters carried out from 1998 to 2010 in Monaco show that a weak correlation between activity concentrations of these radionuclides in the atmosphere and meteorological parameters has been found for (7)Be and temperature (r = 0.50), (210)Pb and temperature and humidity (r = 0.43 and 0.41, respectively), and (137)Cs and precipitation (r = 0.51). The minimum and maximum (7)Be activity concentrations were observed during 2000 and 2009, corresponding with the maximum and minimum solar activity, respectively. The maximum (137)Cs activity concentration found in May-June 1998 was due to the accident at Algeciras in Spain. The deposition velocities of (7)Be, (137)Cs and (210)Pb depended on the precipitation rate, and attained maximum values during dry seasons. The investigated radionuclides may be used as atmospheric tracers, especially in long-term periods.
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