US EPA

3796765 

Journal Article 

Study of the variation and the effect of geo-chemical composition on the external background radiation level 

Marbaniang, DG; Poddar, RK; Nongkynrih, P 

2009 

Yes 

Environmental Monitoring and Assessment
ISSN: 0167-6369
EISSN: 1573-2959 

152 

1-4 

223-230 

English 

18496759 

10.1007/s10661-008-0310-x 

The study to generate the baseline of natural radiation and radioactivity in East and West Khasi Hills District of Meghalaya, India was conducted to determine the different radiation dose in selected stations. Twenty stations were selected in both the district, which include Shillong the capital of Meghalaya and the Domiasiat area, which has been identified as one with a Uranium ore deposit. The dose was measured using a Micro-R-Survey meter and from the measurement it was found out that the absorbed dose in both the districts ranges from 0.04 to 1.66 microGy h(-1). The maximum dose was observed in Kylleng (0.72 microGy h(-1)) and the minimum in Mawphlang (0.06 microGy h(-1)). Average absorbed dose and equivalent dose were found to be higher than the Indian and world average values by several orders. The radiation levels distribution was found to be non-uniform through out the selected study area.