In this work some results of a sampling campaign, aimed to understand the role and contribution of aerosol on the Venice lagoon system and to assess the possible sources (anthropogenic, crustal or marine), are presented. Aerosol samplings were carried out at Mazzorbetto, in the north Venice Lagoon, during summer 2004 (June-July), by using the following devices: the inertial spectrometer (Inspec), the light particle scattering sampler (Las-X, PMS inc.) and the diffusion battery coupled (TSI, mod. 3040) with a condensation nucleus counter (TSI, mod. 3020). The inertial spectrometer (Prodi V., 1979) allows to sample aerosol on a filter and to separate particles based on aerodynamic diameter. The aerosol was collected on polycarbonate filters and analized with SEM-EDAX device. The elemental analysis were performed in the following size intervals: < 1.5 μm; 1.5-2.7 μm; 3.5-4.5 μm; 4.7-5.5 μm and 6.3-7.5 μm. The Las-X light scattering covers a size range of 0.1 to 7.5 μm and gives the particle number concentration divided in 15 interval ranges. The diffusion battery coupled with a condensation nucleus counter (CNC) gives the concentration and size distribution of ultrafine aerosol particles (< 100 nm). The data collected from the different instruments have been correlated with the meteorological parameters (direction, speed, vertical profile of wind, etc) and with vertical PM2.5 turbulent fluxes.
Size characterisation of aerosol in the Venice Lagoon
PRODI, Franco;
2006
Abstract
In this work some results of a sampling campaign, aimed to understand the role and contribution of aerosol on the Venice lagoon system and to assess the possible sources (anthropogenic, crustal or marine), are presented. Aerosol samplings were carried out at Mazzorbetto, in the north Venice Lagoon, during summer 2004 (June-July), by using the following devices: the inertial spectrometer (Inspec), the light particle scattering sampler (Las-X, PMS inc.) and the diffusion battery coupled (TSI, mod. 3040) with a condensation nucleus counter (TSI, mod. 3020). The inertial spectrometer (Prodi V., 1979) allows to sample aerosol on a filter and to separate particles based on aerodynamic diameter. The aerosol was collected on polycarbonate filters and analized with SEM-EDAX device. The elemental analysis were performed in the following size intervals: < 1.5 μm; 1.5-2.7 μm; 3.5-4.5 μm; 4.7-5.5 μm and 6.3-7.5 μm. The Las-X light scattering covers a size range of 0.1 to 7.5 μm and gives the particle number concentration divided in 15 interval ranges. The diffusion battery coupled with a condensation nucleus counter (CNC) gives the concentration and size distribution of ultrafine aerosol particles (< 100 nm). The data collected from the different instruments have been correlated with the meteorological parameters (direction, speed, vertical profile of wind, etc) and with vertical PM2.5 turbulent fluxes.I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
