1.
J Environ Radioact
; 116: 148-51, 2013 Feb.
Artigo
em Inglês
| MEDLINE
| ID: mdl-23153861
RESUMO
The concentration of (238)U, (232)Th, (230)Th, (226)Ra, (228)Ra and (210)Pb were determined in samples of Peperomia pellucida and in the surrounding soil, by alpha spectrometry and gross alpha and beta counting. The radionuclide activity concentrations ranged from 4.3 to 38 Bq kg(-1), 1.7-124 Bq kg(-1), 2.1-38 Bq kg(-1), 8.5-37 Bq kg(-1), 3.2-46 Bq kg(-1), 39-93 Bq kg(-1), respectively. In the plant extractions and infusions as used for consumption, the mean recoveries were from 23% to 60% in maceration and 24-75% in infusion.