Natural radioactivity determination in samples of Peperomia pellucida commonly used as a medicinal herb

作者：Sussa Fabio V; Damatto Sandra R; Alencar Marcos M; Mazzilli Barbara P; Silva Paulo S C^*

来源：Journal of Environmental Radioactivity, 2013, 116: 148-151.

DOI：10.1016/j.jenvrad.2012.09.012

• Peperomia pellucida
• Radionuclides
• Medicinal plant
• Alpha spectrometry
• Radiochemical separation

The concentration of U-238, Th-232, Th-230, Ra-226, Ra-228 and Pb-210 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.

• 出版日期2013-2