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 ›› 1995, Vol. 6 ›› Issue (3): 168

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K N Yu (余君岳) and S Y Mao (茅瑞恩)   

  1. Department of Physics and Materials Science, City University of Hong Kong
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K N Yu (余君岳) and S Y Mao (茅瑞恩). RADIONUCLIDES IN NOODLES AND BREAD CONSUMED IN HONG KONG.Nuclear Science and Techniques, 1995, 6(3): 168

Abstract: Most of the natural occurring radionuclides in both noodles and bread are found to have specific activities below the detectable limit of the high purity germanium (ntype) spectrometer system of the EG&G Ortec Company. For dried bread, 40K, 137Cs and 60Co are found to be 44.45~84.52, < 0.012 -0.052, < 0.018~0.054 Bq/kg; for noodles, to be 29.55-64.54, < 0.01 -0.069 and < 9.8 x 10-3 - 0.074 Bq/kg, respectively. The weighted committed dose equivalents due to the ingestion of 137Cs from noodles and bread for a male and female adults have been estimated to be 0.5 and 0.6 μSv, respectively, being less than the values recommended by ICRP.

Key words: High purity germanium spectrometer system, Noodles, Bread, Natural radionuclides, 40K, 137Cs, 60Co, Weighted committed dose equivalent, Hong, Kong