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Radioactive Fallout in Soils, Crops, and Food
Behaviour and significance of radioactive substances released into agricultural, forestry and fisheries; Radioation in the environment; Radioecology, behaviour, significance, models; Chernobyl and other accidents; Some international situation in Europe after Chernobyl; Some international implications; Soil and crop contamination by rarioactive fallout; Agricultural and forestry soils as a vital global resource; Soil in the nutrient cycle; Sources and nature of radioactive contamination; Biological significance of contaminated soils; Behaviour in soils and movement into foodwebs; Detection and measurement; Countermeasures, reclamation and use of contaminated soils; Concluding comments; some questions and needs.
Radioactive Fallout in Soils, Crops and Food
Behaviour and significance of radioactive substances released into agricultural, forestry and fisheries ecosystems, soil and crop contamination by radioactive fallout, Notes on intervention and derived intervention levels in relation to food and agriculture, Glossary of terms, definitions, units, abbreviations, acronyms.
Radionuclide Contamination and Remediation Through Plants
This book focuses on the mechanistic (microscopic) understanding of radionuclide uptake by plants in contaminated soils and potential use of phytoremediation. The key features concern radionuclide toxicity in plants, how the radioactive materials are absorbed by plants, and how the plants cope with the toxic responses. The respective chapters examine soil classification, natural plant selection, speciation of actinides, kinetic modeling, and case studies on cesium uptake after radiation accidents. Radionuclide contaminants pose serious problems for biological systems, due to their chemical toxicity and radiological effects. The processes by which radionuclides can be incorporated into vegeta...
An Evaluation of the Level of Naturally Occuring Radioactive Materials in Soil Samples Along the Chao Phraya River Basin
The aim of this study was to evaluate the level of natural radioactivity in river sediments and riverbank surface soils collected along the Chao Phraya River and its tributaries in Thailand. The activity concentrations of naturally occurring radioactive materials in the 238U and 232Th decay chains and from 40K were determined by means of a gamma-ray spectrometry system using a hyper-pure germanium (HPGe) detector in a low background configuration. The ranges of activity concentrations of 238U, 232Th and 40K were found to be 13.9 ± 0.4 ~ 76.8 ± 1.7, 12.9 ± 0.3 ~ 142.9 ± 2.8 and 178.4 ± 6.1 ~ 810.7 ± 26.7 Bq.kg-1, respectively. The results of this current study have been compared with th...
Measurement of Radioactivity in the Environment. Soil. Guidance for the Selection of the Sampling Strategy, Sampling and Pre-Treatment of Samples
Soil surveys, Radiation measurement, Soil sampling, Soils, Test specimens, Soil testing, Specimen preparation, Radioactivity, Radioactive materials, Radioactive pollution, Radioactive wastes, Sampling methods
Use of Radioactive Material to Measure Soil Moisture and Density
The need for convenient instruments to measure soil moisture and density in place in a quick, reliable, and possibly continuous manner has long been felt by soils engineers. This paper summarizes the work done up to this time by the Civil Aeronautics Administration and Cornell University on the nuclear meters that are designed to solve the problem. The method presented here makes use of the physical principles of the scattering of neutrons and gamma rays. A source of proper radiation, radium D-beryllium or cobalt 60, is contained in cylindrical probes along with a detector of slow neutrons or of gamma rays, respectively. The probe is inserted into the soil mass through a 1-in. diameter pipe,...
Measurement of Radioactivity in the Environment. Soil. in Situ Measurement of Gamma-Emitting Radionuclides
Soils, Radioactivity, Radiation measurement, Soil testing, Soil surveys, Radioactive pollution, Radioactive materials, Radioactive wastes, Radionuclides, Alpha particles, Beta-particles, Specimen preparation
