Measurement of activity concentration of natural radionuclides for the assessment of radiological indices

被引：15
|
作者：
Shanthi, G. [1 ]
Kumaran, J. Thampi Thanka [2 ,3 ]
Raj, G. Allen Gnana [4 ,5 ]
Maniyan, C. G. [6 ]
机构：
[1] Womens Christian Coll, Dept Phys, Nagercoil 629001, India
[2] NM Christian Coll, Dept Phys, Marthandam 629165, India
[3] NM Christian Coll, Res Ctr, Marthandam 629165, India
[4] Scott Christian Coll, Dept Chem, Nagercoil 629003, India
[5] Scott Christian Coll, Res Ctr, Nagercoil 629003, India
[6] Indian Rare Earths, Hlth Phys Unit, Manavalakurichi 629252, India
来源：
RADIATION PROTECTION DOSIMETRY | 2010年 / 141卷 / 01期
关键词：
BACKGROUND-RADIATION AREA; RADIOACTIVITY LEVELS; SOIL SAMPLES; BUILDING-MATERIALS; FOOD CROPS; PROVINCE; PUNJAB; RA-226; K-40;
D O I：
10.1093/rpd/ncq142
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The concentration of natural radionuclides (Ra-226, Th-232 and K-40) in the soil samples were determined for 28 locations in Kanyakumari district of southwest India by means of gamma spectroscopy with NaI (Tl) detector. The mean activity concentrations for Th-232 and K-40 are greater than the world average values reported by United Nations Scientific Committee on Effects of Atomic Radiation for areas of normal background radiation. Radiological indices were estimated for the radiation of the natural radioactivity of all soil samples. Estimated mean total absorbed dose in air from activity concentration of Ra-226, Th-232 and K-40 in high background radiation areas (HBRAs) is 200 +/- 30 nGy h(-1) and in low background radiation areas (LBRAs) is 29 +/- 14 nGy h(-1). Annual outdoor effective dose was also calculated for HBRA and LBRA. Also the representative level index, which resulted from the natural radionuclides in the soil samples were also estimated and given.
引用
收藏
页码：90 / 96
页数：7
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