6533b85dfe1ef96bd12be839

RESEARCH PRODUCT

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

M. C. SpitaleF. CannizzaroM. RaneliElio Angelo TomarchioG. Greco

subject

MeteorologyPeriod (periodic table)Health Toxicology and MutagenesisSolar activityAir pollutionAtmospheric sciencesmedicine.disease_causePalermoTroposphere7BemedicinePaper filterEnvironmental ChemistryInverse correlationWaste Management and DisposalRadioisotopesActivity concentrationMean valueGeneral MedicineParticulatesHistory 20th CenturyPollutionTemporal variationGround levelSpectrometry GammaItalyEnvironmental scienceBerylliumCosmic RadiationEnvironmental Monitoring

description

Air activity concentrations of (7)Be in Palermo determined for the period January 1995-December 2002 by gamma-ray spectrometric analysis of particulate samples collected on paper filter by a high-volume sampler (approximately 900 m(3) h(-1)) are reported. The temporal behaviour of (7)Be 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 (7)Be air concentration at ground level in our geographical zone. The comparison of long-term variation in the (7)Be concentrations with the cyclic solar activity-extended to the whole period of 21 years-confirms the inverse correlation between the two quantities.

yearjournalcountryeditionlanguage
2003-03-15
10.1016/s0265-931x(03)00177-2http://hdl.handle.net/10447/1856