Abstract
In this article are presented the results of measurements of natural radioactivity in twelve soil samples from the Kampinoski National Park by using high purity germanium detector (HPGe). The average values of the natural radionuclides40K,226Ra and228Ac concentrations in the soil samples are 8.54, 6.65 and 206 Bq/kg respectively. Additionally radiation hazard indices were calculated to evaluate the radiological risk for the public and environment. The results show that the mean values of radium equivalent activity (Raeq) and gamma absorbed dose rate (D) in the air, outdoor annual effective dose equivalent (Eout), and representative level index (Iγ) for analyzed samples were lower than the limit recommended by the United Nations Scientific Committee on the Effect of Atomic Radiation (UNSCEAR). This study is the first to evaluate the radiological impacts in the investigation area.
Highlights
Ionizing radiation has always been present in human life
Soil samples were collected between June and July 2017 from 12 collection points situated in the Kampinoski National Park area
The present results have shown that values of specific activity of potassium in Kampinoski National Park (KPN) were less than its recommended value given by UNSCEAR 2000 [14, 15]
Summary
Ionizing radiation has always been present in human life. It is an integral part of the natural environment. At first, ionizing radiation was coming exclusively from natural sources (described in the literature on natural background radiation) including: cosmic radiation, terrestrial radiation and internal radiation [1]. High natural radiation background doses are present in the southwest coast of India (due to the presence of monazite sand), in Iran (in Ramsar and Mahallat) as a result of a high concentration of radium in rocks and soils as well as radium in the air, in the US, in Canada and in other countries [1–3]. The component generating natural radiation background is the internal radiation, whose main source comes from radioactive elements introduced into the body through inhalation(radium and its decay product) or food. That the mean concentration of radium (226Ra) in polish soils is 25 Bq/lg while the worldwide mean value of 226Ra concentration reaches 35 Bq/kg. The knowledge of radioactivity level in soils samples will provide people living nearby and visitors of KPN relevant information concerning radiological effects for their health
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