Open AccessDETERMINATION OF RADON- 222 CONCENTRATIONS AND EFFECTIVE DOSE BY INGESTION IN GROUND AND SURFACE WATER SOURCES FROM IDAH AND ENVIRONS, NIGERIA
Author(s) -
P.M. Gyuk,
A. Aruwa,
M.D. Dogara,
Isaac H Daniel
Publication year - 2017
Publication title -
international journal of research - granthaalayah
Language(s) - English
Resource type - Journals
eISSN - 2394-3629
pISSN - 2350-0530
DOI - 10.29121/granthaalayah.v5.i9.2017.2192
Subject(s) - effective dose (radiation) , groundwater , ingestion , surface water , radon , environmental science , liquid scintillation counting , borehole , environmental chemistry , hydrology (agriculture) , zoology , chemistry , radiochemistry , environmental engineering , nuclear medicine , geology , physics , medicine , biochemistry , geotechnical engineering , quantum mechanics , biology
Groundwater (well and borehole) and surface water samples from various locations of Idah and environs including have been investigated for their 222Rn concentrations by Liquid Scintillation Counter (Packard Tri-Carb LSA 1000TR) manufactured by Packard Instrument Company. The mean concentration ranges from 4.70 Bq/L to 24.0 Bq/L for borehole samples, 5.70 Bq/L to 13.60 Bq/L and 1.90 Bq/L to 4.50 Bq/L for well and surface water respectively were found. The average mean concentration of 10.23 Bq/L and 12.28 Bq/L were found for borehole and well waters respectively which were above the maximum contaminant limit of 11.1 Bq/L set by USEPA and 10.0 Bq/L by UNSCEAR and WHO. The average mean concentration of 3.05 Bq/L was found for surface water making it safe drinking and domestic use. The average total effective dose by ingestion was found to be 0.0412mSv/y which is lower than the recommended limit for members of the public of 1.0 mSv/y and intervention level of 3 – 10 mSv/y by ICRP.