Abstract
Purification of fifteen NaCl samples from natural and different area in the middle and south of Iraq are prepared and studied the structural characteristics of samples by powder X-ray diffraction analysis at ð›Œ=1.542Ã…. The present work considered the specific activities of naturally occurring radioactive materials in salt samples, which are measured and analyzed using high resolution HPGe system. Also, the radiological parameters have been considered in this work. The average specific concentration (in Bq.kg-1) of the salt samples is found 16.864.92 for 226Ra, 5.972.05 for 232Th and 9.852.8 for 40K, respectively, which are below the national levels, 40Bq.kg-1, 30Bq.kg-1 and 400Bq.kg-1, respectively (UNSCEAR, 2000). Similarly the absorb dose rates are in the range3.71 nGy.h-1 to 12.591nGy.h-1.The measured radiation hazard indices show that the concentrations of these radionuclides in all samples are within the allowable limits.
Highlights
The spread of naturally occurring radionuclides and environmental radioactivity have become an important issue in many countries [1,2,3,4,5,6,7]
Different gamma ray parameters were considered in the present investigation to evaluate the concentrations of radioactive elements in natural salt samples
The power of X-ray diffraction was adjusted at λ=1.542 0A to obtain a diffraction pattern, followed by a subsequent analysis of these patterns which produced the initial crystal of the salt (NaCl)
Summary
The spread of naturally occurring radionuclides and environmental radioactivity have become an important issue in many countries [1,2,3,4,5,6,7] The measurement of these naturally occurring radionuclides in natural salt materials in a specific environment allows determining the exposure and the absorbed doses in the population or subjects working in close contact to these materials. The areas of natural salt presence were selected according to their popularity with production and its spread in the local markets; see Figures 1A and 1B. These samples were purified through re-crystallization after removing the imperfections and dust.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
