NDLI: Occurrence of natural radioactivity and corresponding health risk in groundwater with an elevated radiation background in Juban District, Yemen

Content Provider	Springer Nature Link
Author	Abdurabu, Wedad Ali Saleh, Muneer Aziz Ramli, Ahmad Termizi Heryansyah, Arien
Copyright Year	2016
Abstract	This study aims to investigate the occurrence of natural radiation in groundwater with an elevated background level in Juban District, Yemen, and to assess the corresponding health risk. The mean concentrations of U, Th, and K in groundwater were 11.25, 0.15, and 17.35 mg l$^{−1}$, respectively. The mean activity concentrations of $^{226}$Ra, $^{228}$Ra, and $^{40}$K were 94, 216, and 3306 mBq l$^{−1}$, respectively. 65 % of the groundwater samples were above the WHO guidance level for $^{228}$Ra in water. The maximum concentrations of $^{226}$Ra, Th, and $^{228}$Ra were found around the fault zones in the basement aquifer while the concentrations of U increase down-gradient of Juan District. The principal factors controlling the occurrence and concentrations of radionuclides are aquifer type, leaching behaviour, characteristics of fracture systems, salinity, and water flow path. The annual effective doses due to ingestion of the water were estimated for infant and adult groups. The mean annual effective dose for infants was 1.97 mSv year$^{−1}$ which is almost twenty times the WHO guideline level for drinking water. The ingestion dose deduced for adults and infants is dominated by $^{228}$Ra, where the average contribution from $^{228}$Ra in infants amounted to 90 % and in adults 76 %.
Starting Page	1
Ending Page	12
Page Count	12
File Format	PDF
ISSN	18666280
Journal	Environmental Earth Sciences
Volume Number	75
Issue Number	20
e-ISSN	18666299
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2016-10-17
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Uranium Thorium Potassium Physicochemical parameters Groundwater, human health impacts Geology Hydrology/Water Resources Geochemistry Environmental Science and Engineering Terrestrial Pollution Biogeosciences
Content Type	Text
Resource Type	Article
Subject	Global and Planetary Change Earth-Surface Processes Soil Science Environmental Chemistry Pollution Geology Water Science and Technology

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