Air activity concentrations of 7Be in Palermo determined for the period January 1995–December 2002 by -ray spectrometric analysis of particulate samples collected on paper filter by a high-volume sampler (~900 m3 h-1) are reported. The temporal behaviour of 7Be concentration presents the same characteristics already observed in the measurements carried out over the previous 13-year (1982–1994) investigated period. The mean value of 5.06 mBq m-3 obtained from the analysis of the 4636 particulate samples collected from 1982 to 2002 can be considered a representative value of 7Be air concentration at ground level in our geographical zone. The comparison of long-term variation in the 7Be concentrations with the cyclic solar activity—extended to the whole period of 21 years—confirms the inverse correlation between the two quantities.

TOMARCHIO EA, GGRECO, MRANELI, MCSPITALE, F CANNIZZARO (2004). CONCENTRATION MEASUREMENTS OF 7Be AT GROUND LEVEL AIR AT PALERMO, ITALY- COMPARISON WITH SOLAR ACTIVITY OVER A PERIOD OF 21 YEARS. JOURNAL OF ENVIRONMENTAL RADIOACTIVITY, 72(3), 259-271 [10.1016/S0265-931X(03)00177-2].

CONCENTRATION MEASUREMENTS OF 7Be AT GROUND LEVEL AIR AT PALERMO, ITALY- COMPARISON WITH SOLAR ACTIVITY OVER A PERIOD OF 21 YEARS

TOMARCHIO, Elio Angelo;CANNIZZARO, Francesco
2004-01-01

Abstract

Air activity concentrations of 7Be in Palermo determined for the period January 1995–December 2002 by -ray spectrometric analysis of particulate samples collected on paper filter by a high-volume sampler (~900 m3 h-1) are reported. The temporal behaviour of 7Be concentration presents the same characteristics already observed in the measurements carried out over the previous 13-year (1982–1994) investigated period. The mean value of 5.06 mBq m-3 obtained from the analysis of the 4636 particulate samples collected from 1982 to 2002 can be considered a representative value of 7Be air concentration at ground level in our geographical zone. The comparison of long-term variation in the 7Be concentrations with the cyclic solar activity—extended to the whole period of 21 years—confirms the inverse correlation between the two quantities.
2004
TOMARCHIO EA, GGRECO, MRANELI, MCSPITALE, F CANNIZZARO (2004). CONCENTRATION MEASUREMENTS OF 7Be AT GROUND LEVEL AIR AT PALERMO, ITALY- COMPARISON WITH SOLAR ACTIVITY OVER A PERIOD OF 21 YEARS. JOURNAL OF ENVIRONMENTAL RADIOACTIVITY, 72(3), 259-271 [10.1016/S0265-931X(03)00177-2].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/1856
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