RADIONUCLIDES IN NOODLES AND BREAD CONSUMED IN HONG KONG

K N Yu，

S Y Mao

Nuclear Science and Techniques

pp.168-171

Published in print 01 Aug 1995

39500

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<9.8×10^-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.

High purity germanium spectrometer systemNoodlesBreadNatural radionuclides40K137Cs60CoWeighted committed dose equivalentHong Kong

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