Determination of Gross-β and γ-Ray Activity Concentrations of Human Tooth
2
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
The γ-ray concentration and gross-β activity by age group were measured in the teeth of males and females of the domestic residents. They were divided into 7 age groups from 10s to the age of 70s. The gross-β activity concentration was measured by using the Tennelec XLB measuring instrument filled with P10 gas (argon 90%, methane 10%). The γ-ray was measured through the γ-ray spectroscopic analytical method by using the high purity germanium (HPGe) radiation detector. The range of gross-β activity concentration was measured 0.089 to 0.32Bq/kg in females and 0.13 to 0.26Bq/kg in males. From the γ-ray spectroscopic analysis of the teeth, the natural radioactive isotopes of 40K, 208Tl, 228Ac and 234Th were detected and their measured γ-ray activity concentrations were found to be 20.7, 21.9, 3.88 and 5.24 Bq/kg, respectively.
Abstract
The γ-ray concentration and gross-β activity by age group were measured in the teeth of males and females of the domestic residents. They were divided into 7 age groups from 10s to the age of 70s. The gross-β activity concentration was measured by using the Tennelec XLB measuring instrument filled with P10 gas (argon 90%, methane 10%). The γ-ray was measured through the γ-ray spectroscopic analytical method by using the high purity germanium (HPGe) radiation detector. The range of gross-β activity concentration was measured 0.089 to 0.32Bq/kg in females and 0.13 to 0.26Bq/kg in males. From the γ-ray spectroscopic analysis of the teeth, the natural radioactive isotopes of 40K, 208Tl, 228Ac and 234Th were detected and their measured γ-ray activity concentrations were found to be 20.7, 21.9, 3.88 and 5.24 Bq/kg, respectively.
참고문헌 (10)
- Ionizing Radiation Exposure of the Population of the United States, , NCRP, ~, pp.NCRP Report 160 (2009)
- Aghamiri SMR, "Environmental radiation levels with particular reference to 226Ra in Iran, Brazil and India", PhD, pp.1998
- T.V. Ramachandran, "Measurement of natural radioactivity levels in Indian foodstuffs by gamma spectrometry", Internation Jouranl of Radiation Applications and Instruments, 40, pp.25~28 (1989)
- Yamamoto Masayoshi, "Concentration of 226Ra in human tooth", Health Physics, 97, pp.535~540 (1994)
- B.A. Almayahi, "Measurements of natural radionuclides in human teeth and animal bones as markers of radiation exposure from soil in the Northern Malaysian Peninsula", Radiation Physics and Chemistry, 97, pp.56~67 (2014)
- Y.D. Kulev, "Strontium-90 concentrations in human teeth in South Ukraine, 5years after the Chernobyl accident", Science of The Total Environment, 155, pp.215~219 (1994)
- L.A. Darchuk, "Structural features of human tooth tissues affected by high dose of external ionizing radiation after nuclear catastrophe of Chernobyl plant", Microchemical Journal, 97, pp.282~285 (2011)
- Ömer Söğüt, "Measurement of gross alpha and gross beta activity concentrations in human tooth", Journal of Environmental Radiation, 101, pp.226~229 (2010)
- "Environmental Radioactivity Survey Data in Korea", KINS, 2012
- Joseph J. Mangano, "An unexpected rise in strontium-90in US deciduous teeth in the 1990s", The Science of the Total Environment, 317, pp.37~51 (2003)