In-Situ Environmental Gamma Radiation Monitoring at Ramna Thana, Dhaka, Bangladesh

Abstract

Environmental gamma radiation dose rates were measured using a digital portable Gamma-Scout detector from April-May 2018. For this, total 22 monitoring points (MP) were selected in the outdoor environment in the area of Ramna Thana under Dhaka city. The MPs were marked-out using Global Positioning System (GPS) navigation. The GPS reading of the sampling locations were varied from E: 90o23.568' to E: 90o24.895' and from N: 23o44.031' to N: 23o45.018'. The measured dose rates due to natural radionuclides were ranged from 0.115 ± 0.042 µSv.hr-1 to 0.186 ± 0.051 µSv.h-1 with an average of 0.145 ± 0.044 µSv.h-1. The annual effective dose to the population from outdoor environmental gamma radiation was varied from 0.201 ± 0.073 mSv to 0.326 ± 0.090 mSv with an average of 0.255 ± 0.073 mSv. This kind of study is required to detect the presence of natural radionuclides and artificial radionuclides (if any) releasing from nuclear and radiological facilities in the country or from neighboring countries for normal operations or in case of accident/incident. From this study, it can be concluded that there is no radiation burden to the environment due to man-made sources.

Assessment of radiation level and potential risk to public living around major hospitals in central and western Bangladesh

“…2 that the highest frequency lies between 136 and 150 nSv/h absorbed dose rate region caused by mean background radiation. From the previous study, the background radiation due to natural radionuclides of Motijheel & Ramna thana, the heart of Dhaka city, ranged from 0.095 to 0.185 μSv/h (mean: 0.147 ± 0.047 μSv/h) & from 0.115 to 0.186 μSv/h (mean: 0.145 ± 0.044 μSv/h) [ 38 , 39 ]. The mean dose rate around the hospital's environment is shown in Fig.…”

Outdoor Environmental Radiation Monitoring and Estimation of Radiation Risk on Public in New Market Thana, Dhaka, Bangladesh

“…On the other hand, the lower value of the RTOEGR dose rate in the Nilkhet (1) MP is due to the lack of construction materials of the buildings. The mean RTOEGR dose rate of the New Market Thana is lower than Ramna Thana in Dhaka city [29] and Shahbag Thana in Dhaka city [30]. The lower value of the mean RTOEGR dose rate of the New Market Thana compared to that of the other two Thanas in Dhaka city might be due to the lack of large hospitals and radiological facilities where radioactive substances are handling.…”

Critical Review on Effect of 5G Technology on Covid-19 and Human Health Issues

“…The majority of human exposure to ionizing radiation occurs from natural sources including cosmic rays and terrestrial radiation [8]. As discussed in previous sections that 5G technology is centered on high frequency spectrum i.e., millimeter wave spectrum, it is necessary to analyze the behavior of the same over human body.…”