title: 7Be aerosols and their deposition on the sea: a possible method to estimate trace metals deposition on the sea.
abstract: The activity size distributions of (7)Be aerosols in different size fractions (<0.39 μm, 0.39-0.69 μm, 0.69-1.3 μm, 1.3-2.1 μm, 2.1-4.2 μm, 4.2-10.2 μm and >10.2 μm) were determined at the city of Thessaloniki, Greece, Eastern Mediterranean. The Activity Median Aerodynamic Diameter (AMAD) values ranged from 0.58 to 1.22 μm while more of the 80% of the (7)Be activity was associated with particles smaller than 1.3 μm. Sea salt aerosol particles were defined in a small size range, lower than 0.39 μm. Field measurements at a coastal location allow the estimation of (7)Be deposition on the sea. Since the (7)Be aerosol particles were mainly below 1 μm, scavenging by precipitation was the main process depositing (7)Be on the sea. Acting as an excellent tracer, (7)Be could be used for determination of the deposition of the trace metals on the sea, since they are expected to be deposited at similar rate by wet and dry deposition processes as the (7)Be.
authors.affiliation: Department of Physics, Nuclear Physics & Elementary Particle Physics Division, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece. anta@auth.gr
authors.forename: Alexandra
authors.initials: A
authors.lastname: Ioannidou
mesh_terms: D000336:Aerosols; D001608:Beryllium / Q000032:analysis* / Q000737:chemistry; D006115:Greece; D010316:Particle Size; D011834:Radiation Monitoring; D011848:Radioactive Pollutants / Q000032:analysis*; D011868:Radioisotopes / Q000032:analysis* / Q000737:chemistry; D012623:Seawater
chemical_list: D000336:Aerosols; D011848:Radioactive Pollutants; D011868:Radioisotopes; D001608:Beryllium