Khan F, Ali N, Khan E U, Khattak N U, Khan K
Department of Physics, CIIT, Islamabad, Pakistan.
Radiat Prot Dosimetry. 2010 Feb;138(2):174-9. doi: 10.1093/rpd/ncp214. Epub 2009 Oct 19.
This paper relates to a series of systematic studies regarding measurement of radon concentration in the earthquake-affected areas of northern Pakistan. Radon is a radioactive alpha-particle-emitting gas originating from the decay series of uranium and thorium and is found anywhere in soil, air and water. The nature of water does not matter with regard to the presence of radon, however, the level of radon concentration varies in different types of water. The present survey is carried out in water samples from the fault zone of Balakot and Mansehra regions, North West Frontier Province, Pakistan, which is important for geological consideration and protection from radiation hazards. The measurements were made on a Pylon system that is based on the radon gas measurement with a Lucas cell. In 72 water samples in the equilibrium state between radon and its progeny, the concentration level of radon is measured. The results show that the radon concentrations are in the range of 4.99-24.52 kBq/m(3), with an average value of 15.52 kBq/m(3) for all types of water taken in this survey.
本文涉及一系列关于巴基斯坦北部地震灾区氡浓度测量的系统研究。氡是一种发射α粒子的放射性气体，源自铀和钍的衰变系列，存在于土壤、空气和水中的任何地方。水的性质与氡的存在无关，然而，不同类型水中的氡浓度水平有所不同。本次调查是在巴基斯坦西北边境省巴拉科特和曼塞赫拉地区断层带的水样中进行的，这对于地质考量和防范辐射危害具有重要意义。测量是在一个基于用卢卡斯室测量氡气的派龙系统上进行的。在72个处于氡及其子体平衡状态的水样中，测量了氡的浓度水平。结果表明，本次调查所采集的各类水样中氡浓度在4.99 - 24.52 kBq/m³范围内，平均值为15.52 kBq/m³。
