Radiological Effects of Soil and Rock Samples of Different Libyan Regions

• 作者: Abdu Assalam A. Algattawi Emad Ibrahim Khalil Hilmy Abo Elez Mohammed Fayez-Hassan
• 来源期刊: 工程(英文)(1947-3931)
• 学科: 医学
• 关键词: ACTIVITY Concentration Absorbed DOSE Effective DOSE ACTIVITY Values Soil SAMPLES Western and MID Libya
• 年，卷（期）: gc-eng_2019,（5）
• 页码范围: 247-259
• 页数: 13页
• 分类号: R73

摘要

The activity concentration of natural radioactivity for soil samples collected from western and mid Libyan regions were measured using HPGe detector. The average activity concentration of 226Ra, 232Th and 40K for ten regions was found to be 51.86 ± 7.14, 75.56 ± 10.95 and 128.98 ± 6.88 Bq/kg respectively. The results obtained for the corresponding nuclides 226Ra and 232Th are above the worldwide average values (35 and 30 Bq/kg) while 40K was smaller than worldwide average (400 Bq/kg). The average outdoor absorbed dose and the annual effective dose rates due to 226Ra, 232Th and 40K were observed to be 21.51 ± 2.93 nGy/h and 0.297 ±.03 mSv/y respectively, which are lower than world average values (60 nGy/h and 0.8 mSv/y). The radium equivalent activity and external hazard indices were found less than the world wide average values.