Soil gas radon, indoor radon and its diurnal variation in the northern region of Cameroon.

IF 1.1 4区环境科学与生态学 Q4 CHEMISTRY, INORGANIC & NUCLEAR

Isotopes in Environmental and Health Studies Pub Date : 2022-08-01 DOI:10.1080/10256016.2022.2102617

Sadjo, Takoukam Soh Serge Didier, Hamadou Yerima Abba, Vaskanglang Valentin, Saïdou, Mohamadou Alidou

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引用次数: 1

Abstract

Soil gas radon and indoor radon measurements have been carried out in Mayo-Louti and Benoué Divisions in northern Cameroon. Concentrations of radon in soil have been measured using Markus 10 at the depth of about 1 m. Radon concentration in soil varies from 0.9 to 13.8 kBq m^-3 with a mean value of 4.6 kBq m^-3. Average daily indoor radon concentrations measured with RadonEye+² detectors vary from 7 to 60 Bq m^-3 with an average of 17 Bq m^-3. Indoor radon concentrations measured with passive RADTRAK detectors range between 15 and 104 Bq m^-3 with a geometric value of 38 Bq m^-3 and a geometric standard deviation of 1.5. This geometric value is lower than the value of 30 Bq m^-3 given by UNSCEAR. Indoor radon inhalation dose ranges between 0.28 and 1.97 mSv a^-1 with geometric value of 0.72 mSv a^-1 (at 0.03 standard deviation). Outdoor radon inhalation ranges between 0.02 and 0.26 mSv a^-1 with a mean value of 0.09 mSv a^-1. The total annual effective dose due to indoor and outdoor radon exposure for this study area is 0.81 mSv a^-1, less than 1.15 mSv a^-1 the world average value given by UNSCEAR. There is no significant radiological risk for the inhabitants.

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喀麦隆北部地区土壤气氡、室内氡及其日变化。

在喀麦隆北部的梅奥-卢蒂省和贝努瓦伊省进行了土壤气体氡和室内氡测量。使用Markus 10在大约1米深的地方测量了土壤中的氡浓度。土壤氡浓度在0.9 ~ 13.8 kBq m-3之间变化，平均值为4.6 kBq m-3。RadonEye+2探测器测得的平均每日室内氡浓度在7至60 Bq - m-3之间，平均为17 Bq - m-3。被动式RADTRAK探测器测得的室内氡浓度范围为15至104 Bq - m-3，几何值为38 Bq - m-3，几何标准偏差为1.5。这个几何值低于科委会给出的30 Bq m-3的值。室内氡吸入剂量范围为0.28至1.97毫西弗a-1，几何值为0.72毫西弗a-1(标准差为0.03)。室外氡吸入量在0.02至0.26毫西弗a-1之间，平均值为0.09毫西弗a-1。本研究区域室内外氡暴露的年总有效剂量为0.81毫西弗a-1，低于联合国辐射科委会给出的世界平均值1.15毫西弗a-1。对居民来说没有明显的辐射风险。

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来源期刊

Isotopes in Environmental and Health Studies 环境科学-环境科学

CiteScore

2.80

自引率

7.70%

发文量

审稿时长

3.0 months

期刊介绍： Isotopes in Environmental and Health Studies provides a unique platform for stable isotope studies in geological and life sciences, with emphasis on ecology. The international journal publishes original research papers, review articles, short communications, and book reviews relating to the following topics: -variations in natural isotope abundance (isotope ecology, isotope biochemistry, isotope hydrology, isotope geology) -stable isotope tracer techniques to follow the fate of certain substances in soil, water, plants, animals and in the human body -isotope effects and tracer theory linked with mathematical modelling -isotope measurement methods and equipment with respect to environmental and health research -diagnostic stable isotope application in medicine and in health studies -environmental sources of ionizing radiation and its effects on all living matter