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

Author

Song, Gang ; Tang, Zeping ; Yue, Yumei ; Chen, Diyun

Author_Institution

Guangzhou Higher Educ. Mega Center, Guangzhou, China

fYear

2009

fDate

11-13 June 2009

Firstpage

1

Lastpage

3

Abstract

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/m³. 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/m³, and the average is 20146 Bq/m³. Average radionuclide contents of ²³⁸U, ²²⁶Ra, ²³²Th and ⁴⁰K in PRDEZ soil are 137.6, 136.7, 175.3 and 700.7 Bq/kg, respectively. Zhongshan and Taishan County have the highest average ²³²Th contents in soil.

Keywords

dosimetry; natural radioactivity hazards; radioactive pollution; radioactivity measurement; radon; river pollution; soil pollution; water pollution measurement; ²²⁶Ra; ²³²Th; ²³⁸U; ⁴⁰K; China; Conghua; Guangdong; Pearl River delta economic zone; Taishan; Zhongshan; cosmic radiation; hot spring water; natural radiation measurement; natural radioactivity level; outdoor absorbed dose rate; soil radon content; tap water; terrestrial gamma radiation; Area measurement; Cities and towns; Detectors; Environmental economics; Gamma rays; Humans; Ionizing radiation; Magnetic field measurement; Rivers; Soil measurements;

fLanguage

English

Publisher

ieee

Conference_Titel

Bioinformatics and Biomedical Engineering , 2009. ICBBE 2009. 3rd International Conference on

Conference_Location

Beijing

Print_ISBN

978-1-4244-2901-1

Electronic_ISBN

978-1-4244-2902-8

Type

conf

DOI

10.1109/ICBBE.2009.5163098

Filename

5163098