ABSTRACT
The trace quantities of naturally occurring radionuclides present in the coal fuel of thermal power stations (TPS) result in redistribution of these radionuclides in the vicinity of the power stations through the deposition and disposal of ash. Two large size TPSs have been studied for environmental radioactivity and radiation doses in the vicinity of the stations. The stations were selected on the basis of the levels of primordial radionuclides in the fuel used. A minor increase was observed in the radiation levels in the ash-pond areas of the TPSs. A few food samples grown in TPS surroundings showed marginal increases in their natural radioactivity content.
Subject(s)
Coal/analysis , Power Plants , Radioisotopes/analysis , Food Analysis , India , Soil/analysisABSTRACT
The paper presents the results of measurements on tea samples collected during 1962 and 1973-1983 period for their natural radioactivity content. The radioisotopes studied under this programme are radium-226, thorium-228, and potassium-40. Tea was found to contain higher concentration of these radionuclides compared to other foodstuffs having vegetative origin. Interpretation for higher concentrations in tea compared to other foodstuffs is briefly given on the basis of agroclimatic conditions.
Subject(s)
Potassium Radioisotopes/analysis , Radium/analysis , Tea/analysis , Thorium/analysis , India , Soil Pollutants, Radioactive/analysisABSTRACT
The paper presents results of measurements made on tea samples, collected during 1961-1979 period for their strontium-90 and caesium-137 content. Tea was found to contain higher concentration of these radioisotopes compared to other food-stuffs having vegetative origin. Levels in tea are compared with those in leafy vegetables from both India and Japan. Interpretation for higher concentrations in tea compared to leafy vegetables is briefly given on the basis of agro-climatic conditions. The levels are also considered from the point of view of health hazard.
Subject(s)
Cesium Radioisotopes/analysis , Radioactive Fallout/analysis , Strontium Radioisotopes/analysis , Tea/analysis , IndiaSubject(s)
Books , Cesium Radioisotopes/analysis , Potassium Radioisotopes/analysis , Radium/analysis , Thorium/analysis , Europe , Eye , India , Japan , Radiation Dosage , Radioactive Fallout , Radioactivity , United StatesABSTRACT
The paper presents results of measurements made on cereals and composite meal samples collected from Bombay market for their lead-210 content. The details of sampling and analytical chemistry procedures are also given. The Pb210 contents of most of these samples were in the range of 1--5 pCi/kg of cereals samples. The concentrations in composite meal samples were mostly in the range of 1--3.5 pCi of 210Pb per composite meal. The assessment of daily intake of this isotope through food-stuffs has been made.
