Natural Radioactivity Levels in the Pearl River Delta Economic Zone of Guangdong, China

被引：0
|
作者：
Song, Gang [1 ]
Tang, Zeping [2 ]
Yue, Yumei [2 ]
Chen, Diyun [2 ]
机构：
[1] Guangzhou Higher Educ Mega Ctr, A129,230 Waihuanxilu, Guangzhou 510006, Guangdong, Peoples R China
[2] Engn Guangzhou Univ, Sch Environm Sci & Engn, Guangzhou 510006, Guangdong, Peoples R China
来源：
2009 3RD INTERNATIONAL CONFERENCE ON BIOINFORMATICS AND BIOMEDICAL ENGINEERING, VOLS 1-11 | 2009年
基金：
中国国家自然科学基金;
关键词：
Natural radioactivity; Gamma radiation; Terrestrial radiation; Radionuclide; Radon level; RADON;
D O I：
暂无
中图分类号：
R318 [生物医学工程];
学科分类号：
0831 ;
摘要：
The paper presents the preliminary results of natural radiation measurements in high radiation background areas of the Pearl River Delta Economic Zone (PRDEZ) in Guangdong, China. The results indicated that outdoor absorbed dose rate from cosmic radiation range is 55.7-88.7 nGy/h, and the average is 68.2 nGy/h. Outdoor absorbed dose rate from terrestrial gamma radiation range is 22.6-522 nGy/h, and the average is 137 nGy/h in PRDEZ. The highest absorbed dose rate-522 nGy/h is found in Conghua. Average indoor and outdoor radon level in PRDEZ is 30.5 and 11.2 Bq/m(3). Average radon content in water-tap water in 12 cities is 6.2 Bq/L; hot spring water is 120.6 Bq/L. Radon content in soil range is 35820-817180 Bq/m(3), and the average is 20146 Bq/m(3). Average radionuclide contents of U-238, Ra-226, Th-232 and K-40 in PRDEZ soil are 137.6, 136.7, 175.3 and 700.7Bq/kg, respectively. Zhongshan and Taishan County have the highest average Th-232 contents in soil.
引用
收藏
页码：6529 / +
页数：2
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