THE MEASUREMENT OF RADON WORKING LEVELS AT A MINERAL SEPARATION PILOT PLANT IN COX’S BAZAR, BANGLADESH
THE MEASUREMENT OF RADON WORKING LEVELS AT A MINERAL SEPARATION PILOT PLANT IN COX’S BAZAR, BANGLADESH
复制标题
孟加拉国考克斯巴扎尔矿物分离试验厂氡工作水平的测量
DOI：
10.1097/00004032-200310000-00010
复制
发表时间：
2003
期刊：
影响因子：
2.2
通讯作者：
M. S. Chowdhury
中科院分区：
文献类型：
--
作者：
M. A. Khan;M. S. Chowdhury
摘要：位于孟加拉国Cox 's Bazar的海滩砂开采中心，从Cox 's Bazar海滩和沙丘前可利用的高品位堆积中生产商业级的磁铁矿、钛铁矿、锆石等。使用固体核径迹探测器（CR-39箔）来确定放射性矿砂的室内氡浓度和中心试验工厂内技术增强的辐射水平。结果表明，在加工后的矿源区，其浓度较高，最大浓度为2103±331 Bq m−3（0.23±0.03 WL）。原砂库区及其他地点室内氡及其衰变产物浓度范围为116±27 Bq m−3(0.03±0.003 WL) ~ 2042±233 Bq m−3（0.22±0.03 WL）。
Abstract— Beach Sand Exploitation Centre at Cox’s Bazar, Bangladesh, produces commercial grade concentrations of magnetite, ilmenite, zircon, etc., from the high-grade accumulations available along the beach and foredune of Cox’s Bazar. Solid state nuclear track detectors (CR-39 foils) were used to determine indoor radon concentration of radioactive mineral sands and the technologically enhanced radiation level inside the pilot plant of the Centre. It is found that the concentrations at processed mineral stock areas are high, and the maximum concentration was found to be 2,103 ± 331 Bq m−3 (0.23 ± 0.03 WL). The indoor concentration of radon and its decay products in the raw sand stock area and at other locations was in the range of 116 ± 27 Bq m−3 (0.03 ± 0.003 WL) to 2,042 ± 233 Bq m−3 (0.22 ± 0.03 WL).