Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 1994, Vol. 5 ›› Issue (3): 176

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RADIONUCLIDES IN RICE IN HONG KONG

K. N. Yu (余君岳) and S. Y. Mao (茅瑞恩)   

  1. Department of Physics and Materials Science, City Polytechnic of Hong Kong
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K. N. Yu (余君岳) and S. Y. Mao (茅瑞恩). RADIONUCLIDES IN RICE IN HONG KONG.Nuclear Science and Techniques, 1994, 5(3): 176

Abstract: Radionuclide contents in imported rice are determined using the EG&G ORTEC photon spectrometer system. Most of the natural radionuclides are found to have specific activities below the detectable limit. 40K has values ranging from 0.104 to 32.97 Bq/kg; 137Cs from 0.009 to 0.52 Bq/kg; and 95Zr less than 0.077 Bq/kg. The annual effective dose for a male and a female adult is 18 μSv and 12.7 μSv, respectively. Both are less than the value recommended by the International Commission of Radiological Protection.

Key words: Photon spectrometer system, Rice, 40K, 137Cs, 95Zr, Weighted committed dose equivalent