Journal of Environmental Radioactivity | VOL. 222

210Po concentration in different size fractions of aerosol likely contribution from industrial sources

Publication Date Oct 1, 2020


210Po, being a highly radiotoxic isotope, could contribute to significant inhalation dose to humans. This study establishes the first set of atmospheric 210Po data in aerosol samples collected across Kuwait. The primary focus of this study is to investigate spatio-temporal variability of atmospheric 210Po and assess its sources, including anthropogenic contributions. Measurements of 210Po in aerosols collected over a period of 23 months (January 2018-November 2019) from three different locations, i.e., a remote area (120km) north of Kuwait City, Kuwait city and an industrial site (60km from Kuwait City center). Specific activities of 210Po were determined in 3 different size fractions (0.39-2.5μm, 2.5-10μm and ≥10μm) and the highest activity was observed in the fine fraction (PM0.39- 2.5) across all sampling stations during both the summer and winter seasons. The highest activities in all the size fractions were measured downwind of the Industrial site that houses oil refineries, cement factory and some other industries including a Power and Desalination Plant. In terms of temporal variations, higher summertime activities were observed across the spatial domain. Longer residence time of atmospheric 222Rn-produced 210Pb resulting in lower scavenging of atmospheric 210Pb, due to very little precipitation in summer, will result in higher atmospheric 210Po.


Kuwait City Atmospheric 210Pb Size Fractions 210Po Concentration Precipitation In Summer Higher Activities Desalination Plant Set Of Atmospheric Data Fine Fraction Industrial Site

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