Assessment of Radioactivity in Borehole Waters of the North Riviera Sodeci Catchment Field in Abidjan, Côte d’Ivoire  

作　　者：Epi Zita Tatiana Kocola Achi Bogbé Douo Louis Huberson Gogon Koudou Djagouri Marie Chantal Kouassi Goffri Epi Zita Tatiana Kocola Achi;Bogbé Douo Louis Huberson Gogon;Koudou Djagouri;Marie Chantal Kouassi Goffri(Laboratoire des Sciences de la Matière, Environnement et de l’Energie Solaire (LASMES), Université Felix Houphouet Boigny, Abidjan, Côte d’Ivoire;Autorité de Radioprotection de Sureté et de sécurité Nucléaire, Abidjan, Côte d’Ivoire;Ecole Normale Superieure d’Abidjan, Abidjan, Côte d’Ivoire)

机构地区：[1]Laboratoire des Sciences de la Matière, Environnement et de l’Energie Solaire (LASMES), Université Felix Houphouet Boigny, Abidjan, Cô te d’Ivoire [2]Autorité de Radioprotection de Sureté et de sécurité Nucléaire, Abidjan, Cô te d’Ivoire [3]Ecole Normale Superieure d’Abidjan, Abidjan, Cô te d’Ivoire

出　　处：《World Journal of Nuclear Science and Technology》2022年第1期55-68,共14页核科学与技术国际期刊（英文）

摘　　要：The radioactive isotopes of the decay series of uranium-238 (²³⁸U), thorium-232 (²³²Th) and potassium-40 (⁴⁰K) occur naturally in varying amounts in groundwater. They are the subject of many measures, mainly because of the risk they represent from a public health point of view. The purpose of this study is to measure the radioisotope content of borehole waters from the north riviera (NR) catchment field of the Ivorian drinking water distribution company (SODECI). These measurements will make it possible to assess the absolute levels of radioisotopes in the water from SODECI’s boreholes used directly for drinking or swimming, and possibly the associated risk from a public health point of view. To achieve this, a sampling campaign from the seven functional boreholes and the control or treatment tower took place in July 2018 at the NR well field. The analysis of radionuclides by gamma spectrometry was carried out in the laboratory of the Radiation Protection Institute (RPI) of the Ghana Atomic Energy Commission (GAEC). The naturally occurring radionuclides identified during the borehole water samples analysis are ²³⁸U, ²³²Th, and ⁴⁰K. The results reveal that the specific activities of uranium vary from 0.45 ± 0.18 Bq/L to 0.55 ± 0.17 Bq/L with an average of 0.49 ± 0.15 Bq/L. Those of thorium vary from 0.66 ± 0.14 Bq/L to 0.78 ± 0.18 Bq/L with an average of 0.72 ± 0.16 Bq/L and potassium of 4.14 ± 0.53 Bq/L at 5.87 ± 0.60 Bq/L with an average of 5.32 ± 0.58 Bq/L.The radioactive isotopes of the decay series of uranium-238 (²³⁸U), thorium-232 (²³²Th) and potassium-40 (⁴⁰K) occur naturally in varying amounts in groundwater. They are the subject of many measures, mainly because of the risk they represent from a public health point of view. The purpose of this study is to measure the radioisotope content of borehole waters from the north riviera (NR) catchment field of the Ivorian drinking water distribution company (SODECI). These measurements will make it possible to assess the absolute levels of radioisotopes in the water from SODECI’s boreholes used directly for drinking or swimming, and possibly the associated risk from a public health point of view. To achieve this, a sampling campaign from the seven functional boreholes and the control or treatment tower took place in July 2018 at the NR well field. The analysis of radionuclides by gamma spectrometry was carried out in the laboratory of the Radiation Protection Institute (RPI) of the Ghana Atomic Energy Commission (GAEC). The naturally occurring radionuclides identified during the borehole water samples analysis are ²³⁸U, ²³²Th, and ⁴⁰K. The results reveal that the specific activities of uranium vary from 0.45 ± 0.18 Bq/L to 0.55 ± 0.17 Bq/L with an average of 0.49 ± 0.15 Bq/L. Those of thorium vary from 0.66 ± 0.14 Bq/L to 0.78 ± 0.18 Bq/L with an average of 0.72 ± 0.16 Bq/L and potassium of 4.14 ± 0.53 Bq/L at 5.87 ± 0.60 Bq/L with an average of 5.32 ± 0.58 Bq/L.

关 键 词：North Rivera (NR) Catchment Field Drilling Water Natural Radionuclides Uranium THORIUM Potassium 

分 类 号：O57[理学—粒子物理与原子核物理]