| LIU Qing-fen,ZHU Hong-da.Transfer of natural radionuclides and their chemically similar elements from soil to human body[J].Chinese Journal of Radiological Medicine and Protection,2004,24(3):217-219 |
| Transfer of natural radionuclides and their chemically similar elements from soil to human body |
| Received:August 04, 2003 |
| DOI： |
| KeyWords:Natural radionuclide transfer Soil Dietary intake Critical organ |
| FundProject:国家自然科学基金资助项目(39970234) |
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| Abstract:: |
| Objective To calculate transfer coefficients of natural radionuclides from soil via diet to human body and DFs or ORs of alkaline earth and alkaline metal elements in these transfers. Methods Based on results of dietary intakes and organ or tissue burdens for Chinese adult man by elemental analyzing food and organ or tissue samples of 52 autopsy subjects,collected from 4 areas with different dietary types in China,along with national elemental background values in soil,their transfer coefficients and DFs and ORs were calculated by using the UNSCEAR model. Results The transfer coefficients from soil to diet and then to whole body for 232 Th,238 U, 226 Ra, 87 Rb and40 K were all increasing successively,ranging from (0.092～40.7)Bq·a -1 Bq·kg-1 and (3.58×10-3 ～6.34)Bq·a -1 Bq·kg-1 ,respectively.The ORs of alkaline earth elements with Pb from soil to skeleton randed from 3.77×10-4 to 2.39×10-2 and those of alkaline metals from soil to whole body,2 52×10-2 ～9.39×10 -1 . Conclusion The obtained P34 are all less than P23 .DFs of alkaline earth from soil via diet to skeleton are all less than 1 and DFs of Pb are somewhat between Sr and Ba.For alkaline metal element,DFs of Rb and Cs from soil to diet are less than 1 and those from diet to muscle or whole body are more than 1.However,the situation of Na is just the opposite. |
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