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This manuscript describes the natural radioactivity and its health
hazard effects due to building materials. An overview of other
natural radioactivity sources like uranium, radium, thorium and
potassium and, also the types of radiations has been discussed. A
brief description of radiation units, exposure limits and
guidelines given by International Commission on Radiological
Protection is also given. It represents a brief description of
radium, thorium and potassium measurement techniques, materials and
instruments used in the present study. The building material have
been analyzed for radium analysis using Gama Ray Spectroscopy
technique. The activity content has been determined by calculating
the concentration of these elements in the different building
material samples, taken from different areas.
In the book, the concentration of radio nuclides viz. 226Ra, 232Th
and 40K has been determined in soil samples of Malwa region of
Punjab, India using gamma-ray spectrometry. The solid state nuclear
track detectors have been employed to estimate uranium, radium and
radon exhalation rate in soil samples. The fission track
registration technique has been used for the analysis of uranium
concentration in water samples of the study area. A comparison has
also been done for radon and its progeny estimation in Malout area
using defined solid angle absolute beta counting (DSAABC) technique
and solid state nuclear track detectors (SSNTD) technique.The
literature survey reveals that the data for the level of natural
radioactivity for the Malwa region of Punjab is quite meager. The
detailed investigations for the measurement of natural
radioactivity have been carried out for the first time. The aim of
the present work has been to study the level of natural
radioactivity in Malwa region of Punjab for health risk assessment
and explore the possibilities of uranium, thorium exploration in
the region.
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