标题：Assessment of the Exposure to Natural Radioactivity to Public from the Consumption of Tap Drinking Water in the Six Most Populated Townships of the District of Abidjan
期刊名称：Research Journal of Environmental and Earth Sciences
印刷版ISSN：2041-0484
电子版ISSN：2041-0492
出版年度：2016
卷号：8
期号：4
页码：56-62
DOI：10.19026/rjees.8.3066
出版社：Maxwell Science Publications
摘要：This study assesses the level of natural radioactivity due to radionuclides, 226Ra, 232Th and 40K, in 28 tap water samples collected from 6 most populated townships of Abidjan by using gamma spectrometry method for analysis. The activity concentrations of 226Ra, 232Th and 40K varied from < AMD to 0.82 Bq/L, < AMD to 0.73 Bq/L and 0.82 to 5.91 Bq/L, respectively, with mean values of 0.36±0.06 Bq/L, 0.11±0.04 Bq/L and 2.08±0.69 Bq/L respectively, measured from all the water samples studied. The annual effective doses due to the ingestion of the natural radionuclides measured in the samples ranged from 8.06 to 127.41 &muSv/y with an average value of 39.62±11.62 &muSv/y. This average calculated annual effective dose was found to be much lower than the guideline doses of 100 &muSv/y and 290 &muSv/y respectively recommended by WHO and UNSCEAR. Therefore no harmful effect is expected directly to the population by drinking this water.
