title: Natural radioactivity levels of (226)RA and (40)K in soil of Zanjan province, Iran.
abstract: Radioactivity concentration of naturally occurring radionuclides, (226)Ra and (40)K, in soil samples of Zanjan province, in north-west of Iran and from 21 geographical areas was measured by gamma spectrometry. The activity concentration of (226)Ra ranged from 58.4 + or - 1.8 to 132 + or - 3.1 Bq kg(-1) with the mean value of 88.5 + or - 22.9 Bq kg(-1). The activity concentration of (40)K ranged from 267 + or - 5.9 to 791 + or - 8.1 Bq kg(-1) with the mean value of 497.4 + or - 162.6 Bq kg(-1). The mean values for absorbed dose rate in air and annual effective dose were determined as 62.6 + or - 16.5 nGy h(-1) and 0.076 + or - 0.02 mSv, respectively.
authors.affiliation: Department of Radiology, Faculty of Paramedical and Health, Zanjan University of Medical Sciences, Zanjan, Iran.
authors.forename: F
authors.initials: F
authors.lastname: Saghatchi
authors.forename: M
authors.initials: M
authors.lastname: Salouti
authors.forename: A
authors.initials: A
authors.lastname: Eslami
authors.forename: A
authors.initials: A
authors.lastname: Sharafi
mesh_terms: D007492:Iran; D011197:Potassium Radioisotopes / Q000032:analysis*; D011829:Radiation Dosage; D011834:Radiation Monitoring; D011883:Radium / Q000032:analysis*; D012987:Soil / Q000737:chemistry*; D012990:Soil Pollutants, Radioactive / Q000032:analysis*; D013051:Spectrometry, Gamma
chemical_list: D011197:Potassium Radioisotopes; D012987:Soil; D012990:Soil Pollutants, Radioactive; D011883:Radium