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| DOI | 10.2172/5411161 |
| 报告编号 | PNL-2636 |
| 来源ID | OSTI_ID: 5411161 |
| Simulation of the long-term accumulation of radiocontaminants in crop plants | |
| Schreckhise, R.G. | |
| 英文摘要 | Most radiological dose assessment models ignore the long-term buildup of radiocontaminants in the soil. When they estimate levels in crop plants from root uptake, these models account only for the annual input from the source into the soil. Almost all of the models ignore the build-up of contaminants in the soil profile due to the accumulation in the roots and the build-up from the above-ground plant material that is buried by plowing. The model described in this report simulates the entire system involved in the cycling and accumulation of radionuclides in cultivated land. The model, named CROPRE, was developed to predict both the long-term accumulation of radionuclides and the resulting concentrations of radionuclides in vegetation. This model was designed to include: (1) the chronic input of contaminated irrigation water into both the soil compartment and directly onto the surface of the vegetation; (2) the incorporation of radiocontaminants in the soil organic matter pool and their eventual release for re-uptake by subsequent crops; (3) the removal of contaminants from the system when the crops are harvested; and (4) the downward movement of radionuclides and their loss from the system by percolation. The CROPRE model more realistically simulates the cycling of radiocontaminants in crop plants over long periods of time than does the other models. It is recommended that it be incorporated into existing radiation dose commitment models. |
| 出版年 | 1980 |
| 报告类型 | Technical Report |
| 语种 | 英语 |
| 国家 | 美国 |
| 来源学科分类 | 54 ENVIRONMENTAL SCIENCES ; 63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT. ; CROPS ; DOSE COMMITMENTS ; COMPUTER CODES ; RADIOECOLOGICAL CONCENTRATION ; MATHEMATICAL MODELS ; SOILS ; RADIONUCLIDE MIGRATION ; BIOLOGICAL ACCUMULATION ; CONTAMINATION ; ENVIRONMENTAL EXPOSURE PATHWAY ; FLOWSHEETS ; FOOD CHAINS ; GRAPHS ; IRRIGATION ; PLANTS ; RADIOISOTOPES ; ROOTS ; TABLES ; THEORETICAL DATA ; TIME DEPENDENCE ; UPTAKE ; DATA ; DATA FORMS ; DIAGRAMS ; ECOLOGICAL CONCENTRATION ; ENVIRONMENTAL TRANSPORT ; INFORMATION ; ISOTOPES ; MASS TRANSFER ; NUMERICAL DATA 510302* -- Environment, Terrestrial-- Radioactive Materials Monitoring & Transport-- Terrestrial Ecosystems & Food Chains-- (-1987) ; 560173 -- Radiation Effects-- Nuclide Kinetics & Toxicology-- Plants-- (-1987) |
| URL | http://www.osti.gov/scitech/servlets/purl/5411161 |
| 资源类型 | 科技报告 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/262610 |
| 推荐引用方式 GB/T 7714 | Schreckhise, R.G.. Simulation of the long-term accumulation of radiocontaminants in crop plants,1980. |
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