| Yang Xiaotong,Weng Detong,Chen Wenyin.Transfer of 226 Ra, 228 Ra, 210 Pb and 210 Po in aquatic organisms and food chain[J].Chinese Journal of Radiological Medicine and Protection,1998,18(2):129-132 |
| Transfer of 226 Ra, 228 Ra, 210 Pb and 210 Po in aquatic organisms and food chain |
| Received:March 12, 1997 Revised:August 13, 1997 |
| DOI： |
| KeyWords:Aquatic organism Food chain 226 Ra 228 Ra 210 Pb 210 Po Transfer |
| FundProject:福建省科委自然科学基金 |
| Author Name | Affiliation | | Yang Xiaotong | Fujian Provincial Institute of Radiation Health Protection, Fuzhou 350001, China | | Weng Detong | Fujian Provincial Institute of Radiation Health Protection, Fuzhou 350001, China | | Chen Wenyin | Fujian Provincial Institute of Radiation Health Protection, Fuzhou 350001, China | | 陈秀云 | Fujian Provincial Institute of Radiation Health Protection, Fuzhou 350001, China | | 陈纪溪 | Fujian Provincial Institute of Radiation Health Protection, Fuzhou 350001, China | | 赵时敏 | Fujian Provincial Institute of Radiation Health Protection, Fuzhou 350001, China |
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| Abstract:: |
| Objective To find out the transfer regularities of 226 Ra, 228 Ra, <>sup210 Pb and 210 Po,which are natural radionuclides in the aquatic organisms and food chain.Methods Large amount of breed of representative aquatic products and their living waters and sediments were collected and treated according to routine experimental procedures.The contents of 226 Ra, 228 Ra, 210 Pb and 210 Po were detected in each sample.Measured data were analyzed statistically and pairwise comparisons were made to determine the differences between groups.Results 226 Ra, 228 Ra and 210 Pb were mainly deposited in the bones(or shells),their concentration factors(CF)ranged from 10 2 to 10 3;the CF ranged only from 10 0 to 10 2 in the flesh.210 Po was mainly deposited in the soft tissues,CF ranged from 10 2 to 10 4;especially in the stomaches and intestines of fishes,the value reached 10 4.The cooking process did not impinge significantly on the transfer of 226 Ra, 228 Ra and 210 Pb in the food chain (P>0.05),but did significantly influence the transfer of 210 Po,especially in the freshwater fishes and shrimps.Paired comparison test of the activities between raw flesh and cooked flesh showed very significant difference (P <0.01).Conclusion Aquatic organisms have very strong concentration capabilities for 226 Ra, 228 Ra, 210 Pb and 210 Po.Even though the bones (or shells) of aquatic organisms contained relatively higher levels of 226 Ra, 228 Ra and 210 Pb,the cooking process does not significantly increase the radioactive contents in the foodstuffs.However,the cooking process does significantly influence the transfer of 210 Po.It does significantly increase the content of 210 Po in foodstuffs. |
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