Analysis of Radon-222 in Surface and Groundwater Sources in Kajiado County, Kenya.

Q2 Environmental Science

The Scientific World Journal Pub Date : 2026-03-03 eCollection Date: 2026-01-01 DOI:10.1155/tswj/6345685

Christine Kerubo Onyoni, Calford Otieno, Jeremiah Monari Kebwaro

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Abstract

This study entailed measurement of the concentration of ²²²Rn in surface and subsurface water sources from Kajiado Municipality in Kenya. Kajiado County receives minimal rainfall and is not well covered by the municipal treated water network. The residents of the area mainly rely on subsurface water sources for their domestic consumption. Twenty-seven surface and groundwater samples were collected, and ²²²Rn concentrations were measured using a RAD7 alpha detector. It was observed that the radon activity in groundwater ranged from 0.62 to 13 mBq/L while the radon activity in surface water ranged between 0.06 and 1.53 mBq/L. The mean values obtained were 6.01 ± 1 mBq/L for the groundwater and 0.45 ± 0.11 mBq/L for the surface water. These values are within the US Environmental Protection Agency (USEPA) standard limit of 148 mBq/L and the World Health Organization (WHO) global average of 100 mBq/L. The water is generally safe for domestic consumption.

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肯尼亚钱钱昌县地表水和地下水中氡-222的分析

本研究测量了肯尼亚自治区地表和地下水源中222Rn的浓度。该县降雨量很少，市政处理过的水网覆盖范围不广。该地区居民的生活用水主要依靠地下水源。采集了27份地表水和地下水样品，用RAD7 α探测器测量了222Rn的浓度。地下水氡活度为0.62 ~ 13 mBq/L，地表水氡活度为0.06 ~ 1.53 mBq/L。地下水和地表水的平均值分别为6.01±1 mBq/L和0.45±0.11 mBq/L。这些数值在美国环境保护署（USEPA）的148 mBq/L标准限值和世界卫生组织（WHO）的100 mBq/L的全球平均限值之内。水一般来说是安全的，可供家庭使用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

The Scientific World Journal 综合性期刊-综合性期刊

CiteScore

5.60

自引率

0.00%

发文量

170

审稿时长

3.7 months

期刊介绍： The Scientific World Journal is a peer-reviewed, Open Access journal that publishes original research, reviews, and clinical studies covering a wide range of subjects in science, technology, and medicine. The journal is divided into 81 subject areas.