Open Access Open Access  Restricted Access Subscription Access
Cover Image

GIS BASED INVESTIGATION OF FOOD CHAIN VULNERABILITY TO RADIATION EXPOSURE IN PAKISTAN – A REVIEW

Tahira Shaheen, Shafiq ur Rehman, Muhammad Asif Javed, Sajid Rashid Ahmad

Abstract


Human beings have been exposed to naturally occurring ionizing radiation continually during their existence period. Specially, radionuclides that occur naturally are existing in fluctuating quantities in our surroundings. The aim of this study was to review the various pathways leading to human radiation exposure resulting from soil, drinking water and vegetation to establish the database which can support to probe if there is any health threat posed by radioactivity exposure to the residents of Pakistan.[1] Human exposure to isotopes of 40K, 226Ra, 232Th, 137Cs and 90Sr through soil, plant and drinking water pathways was reviewed. In this esteem, reported data of Pakistan have been assembled and studied in this research. Radionuclide concentrations in food chain constituents and their transfer aspects to the humans were catalogued to illustrate human consumptions along different pathways. Wherever possible, summary data and inferences from the worldly examples were taken into account to fill the gaps in the data base for natural series radionuclides. Hazard maps incorporating radium equivalent activity, external and internal hazards indices were produced using GIS.[2]In maximum situations, the soil-plant-human trail is the main route of ingestion for humans. Apparently there was no posed threat found to humans in the reported areas of Pakistan as the reported data did not show any values exceeding the international radioactivity standards.

 

 


Full Text:

PDF

Refbacks

  • There are currently no refbacks.