Kumar Sanjeev, Singh Surinder, Bajwa Bikramjit S, Sabharwal Arvind D
Department of Physics, Guru Nanak Dev University, Amritsar, India.
Isotopes Environ Health Stud. 2011 Dec;47(4):446-55. doi: 10.1080/10256016.2011.622441.
Radon concentration levels in water and soil gas from 36 locations pertaining to some areas of Malwa region of Punjab have been measured on an in situ basis using a continuous active radon detector (AlphaGuard, Model - PQ 2000 PRO, Genitron instruments, Germany). Exhalation rate measurements have also been carried out at these places, using a closed-circuit technique. The radon concentrations in soil and water varied from 1.9 to 16.4 kBq m(-3) and 5.01 to 11.6 kBq m(-3), respectively. The exhalation rate (E (Rn)) ranged between 7.48 and 35.88 mBq m(-2) s(-1) with an average value of 18.17 mBq m(-2) s(-1). Annual dose rates have been calculated for water radon concentrations. The minimum to maximum values of dose rates were found to be 13.42-31.08 μSv y(-1). The recorded values of radon concentration in water are within the safe limit of 11 Bq l(-1) recommended by the US Environment Protection Agency [National Research Council, Risk Assessment of Radon in Drinking Water (Academy Press, Washington, DC, USA, 1999)]. All measurements were made in similar climatic and environmental conditions to ensure minimal variations in meteorological parameters. An intermediate correlation coefficient (0.5) was observed between radon exhalation rates and soil gas values.
使用连续有源氡探测器（AlphaGuard，型号 - PQ 2000 PRO，德国Genitron仪器公司），对旁遮普邦马尔瓦地区一些区域的36个地点的水和土壤气体中的氡浓度水平进行了现场测量。还使用闭路技术在这些地点进行了析出率测量。土壤和水中的氡浓度分别在1.9至16.4 kBq m(-3) 和5.01至11.6 kBq m(-3) 之间。析出率（E (Rn)）在7.48至35.88 mBq m(-2) s(-1) 之间，平均值为18.17 mBq m(-2) s(-1)。已根据水中氡浓度计算出年剂量率。剂量率的最小值至最大值为13.42 - 31.08 μSv y(-1)。记录的水中氡浓度值在美国环境保护局推荐的11 Bq l(-1) 的安全限值内[国家研究委员会，《饮用水中氡的风险评估》（美国华盛顿特区学院出版社，1999年）]。所有测量均在相似的气候和环境条件下进行，以确保气象参数的变化最小。在氡析出率和土壤气体值之间观察到中等相关系数（0.5）。
