Status of radon exposure in Bangladeshi locations and dwellings
Status of radon exposure in Bangladeshi locations and dwellings
复制标题
孟加拉国地点和住宅的氡暴露状况
DOI：
10.1007/s10661-021-09571-4
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发表时间：
2021
影响因子：
3
通讯作者：
Iimoto Takeshi
中科院分区：
文献类型：
--
作者：
Hasan Md. Mahamudul;Janik Miroslaw;Sakoda Akihiro;Iimoto Takeshi
根据这项全国性研究的估计，孟加拉国人口由于受到天然本底辐射照射而有可能患上更高的癌症。自然背景高的几个地区土壤镭和钍含量高于世界平均水平。作为这些放射性元素的衰变产物，天然氡同位素可能构成环境风险因素，使生活在这些地区的人的肺部受到内部辐射照射。虽然肺癌是孟加拉国最常见的癌症之一，但其状况和特征仍不清楚。为了澄清该国肺癌的潜在危险因素之一的现状，本综述旨在确定全国范围内的氡暴露及其按当地住宅类型和地区划分的途径，这将提供天然本底辐射和土壤放射性核素高的地区内照射的指示，并初步了解环境氡对肺癌的发病率。在这次审查中，全国范围内监测空气氡暴露孟加拉国的住宅和工作场所组织从同行评审的出版论文。氡是孟加拉国最重要的辐射源之一，土壤中氡的析出率和射气率较高。通过辐射图，对孟加拉国室内和土壤氡水平的总体评估进行了新的全国性描述。这将有助于设计今后系统的氡/放射性监测和对该国肺癌发病率的研究。
Potentially higher cancer risk due to exposure from natural background radiation was indicated for the Bangladeshi population by estimations based on the countrywide study. Several regions with elevated natural background exhibited higher soil radium and thorium contents than the world average. Being the decay products of these radioactive elements, natural radon isotopes could constitute environmental risk factors for internal radiation exposure to the lungs of people living in these areas. Although lung cancer is one of the most prevalent types of cancer in Bangladesh, its status and features are still unclear. To clarify the present status of one of the potential risk factors for lung cancer in the country, this review intends to ascertain the countrywide radon exposure, and its pathways by types of local dwelling and by regions, which would provide an indication of the internal exposures in areas of elevated natural background radiation and radionuclides of soil as well as an understanding of the preliminary contribution of environmental radon on the country’s lung cancer prevalence. In this review, countrywide monitored air radon exposures for Bangladeshi dwellings and workplaces are organized from peer-reviewed published papers. Radon has been identified as one of influential sources of radiation dose in Bangladesh with its higher radon exhalation and emanation rate from soil. A novel nationwide depiction of the overall assessed indoor and soil radon levels for Bangladesh has been made through radiation maps. This would be helpful for designing future systematic radon/radiological monitoring and research on the country’s lung cancer prevalence.
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