Indoor inhalation dose estimates due to radon and thoron in some areas of South-Western Punjab, India.
Indoor inhalation dose estimates due to radon and thoron in some areas of South-Western Punjab, India.
复制标题
印度旁遮普邦西南部部分地区氡气和钍气的室内吸入剂量估计。
DOI：
10.1093/rpd/ncr461
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发表时间：
2012
影响因子：
1
通讯作者：
K. P. Eappen
中科院分区：
文献类型：
--
作者：
Sanjeev Kumar;Surinder Singh;B. S. Bajwa;B. Singh;A. D. Sabharwal;K. P. Eappen
基于 LR-115（II 型）的氡气-钍气辨别双室剂量计已用于估算印度旁遮普邦西南部住宅中的氡气 ((222)Rn) 和钍气 ((220)Rn) 浓度。目前的研究地区已显示出公共癌症事件的明显病例[Thakur、Rao、Rajwanshi、Parwana 和 Kumar（印度北部旁遮普农村农业社区高癌症流行病学研究。Int J Environ Res Public Health 2008；5(5):399-407）和 Kumar 等人。 （印度旁遮普邦地下水中天然铀的风险评估。Hum Ecol Risk Assess 2011；17:381-93）]。氡是一种致癌物质，在研究区域随机选择的一些住宅中进行了监测。结果显示，氡气 ((222)Rn) 的值从 21 到 79 Bq m(-3) 变化，几何平均值为 45 Bq m(-3) [几何标准差 (GSD 1.39)]，钍气 ((220)Rn) 的值从最低检测水平到 58 Bq m(-3)，几何平均值为 19 Bq m(-3) （GSD 1.88）。裸卡数据用于通过使用寻根方法导出平衡因子 (F) 来计算子代浓度 [Mayya、Eappen 和 Nambi（使用带有三个轨道探测器的双杯剂量计在独居石区域进行混合场吸入剂量测定的方法。Radiat Prot Dosim 1998;77(3):177-84)]。使用 UNSCEAR 平衡因子和计算的 F 值计算和比较了吸入剂量。结果显示值之间的比较令人满意。
LR-115 (type II)-based radon-thoron discriminating twin-chamber dosemeters have been used for estimating radon ((222)Rn) and thoron ((220)Rn) concentrations in dwellings of south-western Punjab, India. The present study region has shown pronounced cases of cancer incidents in the public [Thakur, Rao, Rajwanshi, Parwana and Kumar (Epidemiological study of high cancer among rural agricultural community of Punjab in Northern India. Int J Environ Res Public Health 2008; 5(5):399-407) and Kumar et al. (Risk assessment for natural uranium in subsurface water of Punjab state, India. Hum Ecol Risk Assess 2011;17:381-93)]. Radon being a carcinogen has been monitored in some dwellings selected randomly in the study area. Results show that the values of radon ((222)Rn) varied from 21 to 79 Bq m(-3), with a geometric mean of 45 Bq m(-3) [geometric standard deviation (GSD 1.39)], and those of thoron ((220)Rn) from minimum detection level to 58 Bq m(-3) with a geometric mean of 19 Bq m(-3) (GSD 1.88). Bare card data are used for computing the progeny concentration by deriving the equilibrium factor (F) using a root finding method [Mayya, Eappen and Nambi (Methodology for mixed field inhalation dosimetry in monazite areas using a twin-cup dosemeter with three track detectors. Radiat Prot Dosim 1998;77(3):177-84)]. Inhalation doses have been calculated and compared using UNSCEAR equilibrium factors and by using the calculated F-values. The results show satisfactory comparison between the values.