title: (210)Po and (210)Pb in medicinal plants in the region of Karnataka, Southern India.
abstract: The activity concentrations of naturally occurring radionuclides (210)Po and (210)Pb were estimated in some selected medicinal plants and soil samples of coastal Karnataka in India. The mean activity concentrations of (210)Po and (210)Pb varied in the range of 4.7-42.9 Bq kg(-1) (dry weight) and 36.1-124 Bq kg(-1) (dry weight) in the soil samples, and 3.3-63.7 Bq kg(-1) (dry weight) and 12.0-406 Bq kg(-1) (dry weight), in the medicinal plant samples, respectively. The plants, Ocimum sanctum L. and Plectranthus amboinicus (Lour.) Spreng had significantly higher activity concentrations of (210)Po and (210)Pb than other species sampled. In spite of disequilibrium between them, these two radionuclides were well correlated in both soil and medicinal plants.
authors.affiliation: Department of Physics, St. Philomena College, Puttur 574 202, India.
authors.forename: K
authors.initials: K
authors.lastname: Chandrashekara
authors.affiliation: University Science and Instrumentation Centre, Mangalore University, Mangalagangotri 574 199, India. Electronic address: carrtmu@gmail.com.
authors.forename: H M
authors.initials: HM
authors.lastname: Somashekarappa
mesh_terms: D007194:India; D007856:Lead Radioisotopes / Q000032:analysis*; D024301:Plant Bark / Q000737:chemistry; D018515:Plant Leaves / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D011059:Polonium / Q000032:analysis*; D011834:Radiation Monitoring; D027343:Rhizome / Q000737:chemistry; D012989:Soil Pollutants / Q000032:analysis*
chemical_list: D007856:Lead Radioisotopes; D012989:Soil Pollutants; D011059:Polonium
keywords: Ayurvedic system; Coastal Karnataka; Medicinal plants; Radionuclides; Soil to plant transfer factor