radium equivalent activity;
external and internal hazards indices;
construction materials;
maximum permissible concentration;
gamma ray spectroscopy;
D O I:
10.1016/S1350-4487(97)00096-6
中图分类号:
TL [原子能技术];
O571 [原子核物理学];
学科分类号:
0827 ;
082701 ;
摘要:
Sand samples were collected from Adasiah (near Amman), Jerash and Ghor As-Safi (near Karak). Ra-226, Th-232 and K-40 activities, present in these samples, were measured using a gamma ray spectroscopy technique. The average values of the radium equivalent activities were calculated and were found to be 41.06 Bq kg(-1), 54.7 Bq kg(-1) and 85.53 Bq kg(-1) in samples collected from Adasiah, Jerash and Ghor As-Safi, respectively. These values are within the limit (i.e. less than 370 Bq kg(-1)) recommended for the safe use of construction materials for dwellings by OECD.
机构:
Shaanxi Normal Univ, Coll Tourism & Environm, Xian 710062, Peoples R ChinaShaanxi Normal Univ, Coll Tourism & Environm, Xian 710062, Peoples R China
Lu Xinwei
Zhang Xiaolan
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机构:
Shaanxi Normal Univ, Coll Tourism & Environm, Xian 710062, Peoples R ChinaShaanxi Normal Univ, Coll Tourism & Environm, Xian 710062, Peoples R China