engleski

TOTAL BETA ACTIVITY IN THE AIR AND WET FALLOUT IN RELATION WITH SUSPENDED PARTICULATE MATTER CONCENTRATIONS

Within the scope of systematic investigations of the environment, the Radiation Protection Unit and Environmental Hygiene Unit of the Institute for Medical Research and Occupational Health in Zagreb have been conducting measurement of total beta activity in the air in the samples of rain and snow (wet fallout), as well as measurement and analysis of suspended particulate matter in the air. The samples of the atmosphere were analysed for the amount of suspended particulate matter fractions (PM2.5 and PM10) in the air. The samples were collected on a daily basis over the period of three years (from the year 2000 to 2002), at the location of the Institute. The results of total beta activity in the air showed good agreement with suspended particulate matter concentrations (best with PM2.5). The results of total beta activity in the fallout showed good agreement with suspended particulate matter concentrations, too. Special concern was given to the possible relationship between total beta activity and suspended particulate matter concentrations in the days before and after the rain. This agreement was obvious during longer continuous wet-fallout period.

Air pollution; radioactive matter; total beta radioactivity in the air and in fallout; suspended particulate matter

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