~(90)Sr, ~(210)Po and ~(210)Pb in lichen and reindeer in Norway

摘要

Concentrations of ~(90)Sr, ~(210)Po and ~(210)Pb in lichen and reindeer were studied in central (0stre Namdal) and southern Norway (Vaga) during 2000―2003. The study focussed on potential differences in concentrations of these nuclides in reindeer of different ages. Concentrations of ~(90)Sr in bones of ～ 10 year old adult females were about 40% higher than those in calves' antlers (~(90)Sr concentrations in antlers and bones of calves are similar), while the available data from Vaga suggest that ~(90)Sr concentrations in reindeer calves decreased with an effective ecological half-time of 9.03 ± 0.06 years during 1988-2002. Furthermore, ~(90)Sr concentrations were 50―80% higher in bone of reindeer of a similar age from Vaga compared to those from 0stre Namdal. Concentrations of ~(210)Po and ~(210)Pb in muscle and liver tissues were comparable to those reported for reindeer in other Nordic areas, with no significant difference in ~(210)Po and ~(210)Pb concentrations between adults and calves or between reindeer from the two different study areas.