Specific Activity of<sup>210</sup>Pb in the Environment

Kauranen, P.; Jk, Miettinen

doi:10.1080/03067317408071091

Cited by 8 publications

(1 citation statement)

References 14 publications

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“…In [25] it is reported that the specific activity of 210 Pb in lichen in Sweden was relatively constant from the 1880s onwards, about 74 kBq.g -1 Pb, but after the World War II the specific activity of 210Pb decreased to a level of about 22 kBq.g -1 Pb. The specific activity of 210 Pb in aerosol particles in 1969-1970 varied from 0.67 to 39 kBq.g -1 Pb in southern Finland and from 3.9 to 91 kBq.g -1 Pb in Northern Finland [26]. In 2006-2007, the specific activity of 210 Pb in precipitation in Finland varied between 17 and 607 kBq.g -1 Pb with minimum values in winter, due to increased lead emissions from energy production during the cold season [27].…”

Section: First Results Of 210 Pb In Pm10 Fraction In Sofiamentioning

confidence: 99%

Measurements of Lead-210 Activity Concentration in the Ground-Level Air in Finland and Bulgaria

Paatero¹,

Veleva²,

Hristova³

et al. 2017

RadJ

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Abstract. Airborne lead-210 is a useful tracer for studying air mass origin and transport. 210 Pb is produced in the atmosphere by the decay of the radioactive noble gas 222 Rn, emanating after 226 Ra decay from the earth crust. The results obtained for 210 Pb concentration in total suspended particulate (TSP) display seasonal pattern with maximum in the summer-autumn period. The TSP filters are collected within the scope of atmospheric radioactivity monitoring in NIMH, Bulgaria and were measured initially for short and long lived beta radionuclides. The methodology developed in FMI, Finland, based on gross alpha counting of 210 Po-the daughter of the combined aerosol filters samples collected in Sofia during the period 2001 -2003 and 2006-2007, is applied. The first results for 210 Pb in particulate matter, fraction below 10 μm (PM10), in February 2012 in Sofia are presented. The alpha counting methodology was successfully applied for daily PM10 quartz filters with the counting uncertainty value of ≤20%. Lead-210 daily concentration is compared to the PM10 mass concentration and elemental lead concentration, determined by EDXRF technique. The comparison between 210 Pb, elemental lead and PM10 mass concentration reveals a different time variation for days with cyclonic weather and mass transport from south-west and an anticyclone episode with increasing PM10, lead-210 and lead concentrations from day to day. An increase in the PM10/ 210 Pb ratio indicates local sources of the particulate mass.

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Section: First Results Of 210 Pb In Pm10 Fraction In Sofiamentioning

confidence: 99%