Related Experiment Video
Updated: May 6, 2026

A Novel Technique for Raman Analysis of Highly Radioactive Samples Using Any Standard Micro-Raman Spectrometer
Published on: April 12, 2017
Study of natural radioactivity in Mansehra granite, Pakistan: environmental concerns
Aziz Ahmed Qureshi1, Ishtiaq Ahmed Khan Jadoon, Ali Abbas Wajid
1Radiation Physics Laboratory, Physics Department, COMSATS Institute of Information Technology, Chak Shahzad, Park Road, Islamabad, Pakistan.
Abstract:
A part of Mansehra Granite was selected for the assessment of radiological hazards. The average activity concentrations of (226)Ra, (232)Th and (40)K were found to be 27.32, 50.07 and 953.10 Bq kg(-1), respectively. These values are in the median range when compared with the granites around the world. Radiological hazard indices and annual effective doses were estimated. All of these indices were found to be within the criterion limits except outdoor external dose (82.38 nGy h(-1)) and indoor external dose (156.04 nGy h(-1)), which are higher than the world's average background levels of 51 and 55 nGy h(-1), respectively. These values correspond to an average annual effective dose of 0.867 mSv y(-1), which is less than the criterion limit of 1 mSv y(-1) (ICRP-103). Some localities in the Mansehra city have annual effective dose higher than the limit of 1 mSv y(-1). Overall, the Mansehra Granite does not pose any significant radiological health hazard in the outdoor or indoor.
Related Concept Videos
Radioactive Decay and Radiometric Dating
Microbial Bioremediation of Uranium
Biological Effects of Radiation
Radioactivity and Nuclear Equations
A nuclide of an element has a specific number of protons and...
Isotopes and Radioisotopes
An isotope containing...
Radiation Pressure: Problem Solving
The average value of the rate of momentum transfer divided by the absorbing area represents the average force...

