scholarly journals Identification of TENORM in Zirconium Oxychloride with Gamma Spectrometry

2021 ◽  
Vol 2 (1) ◽  
pp. 61-67
Author(s):  
Kharistya Rozana ◽  
Devi Swasti Prabasiwi ◽  
Dewi Puspa Ariany
Keyword(s):  
Radiation Exposure ◽  
Gamma Spectrometry ◽  
Hpge Detector ◽  
Acid Leaching ◽  
Zirconium Oxychloride ◽  
Environmental Radioactivity ◽  
Gamma Spectrometer ◽  
Activity Concentrations ◽  
Measured Activity ◽  
Job Safety

Abstract: Gamma spectrometer used to determine the type and activity of gamma emitting radionuclides, such as the measurement of TENORM (Th-232, U-238, Ra-26 dan K-40) in the zirconium oxychloride or environmental radioactivity.  This research was carried out to know each the TENORM on the zirconium oxychloride (ZrOCl2.8H2O) which accommodation of environment data the radioactivity in draft job safety about the workers.  Zirconium oxychloride is a result of chloride acid leaching process from sodium zirconate, containing uranium and thorium, so that it has the potential for contamination and increase the radiation exposure.  The instrument used for counting by HPGe detector and the spectrum were analyzed further using software Genie 2000.  Mean measured activity concentrations (radioactivity) of U-238, Th-232, Ra-226 and K-40 respectively were 13,43±0,876 Bq/kg, 12,040±1,483 Bq/kg, 11,400±0,582 Bq/kg dan 32,940±3,270 Bq/kg.

ASSESSMENT OF NATURALLY OCCURRING RADIONUCLIDES IN MALAYSIA’S BUILDING MATERIALS

2019 ◽  
Vol 186 (4) ◽  
pp. 520-523 ◽  
Author(s):  
Shittu Abdullahi ◽  
Aznan Fazli Ismail ◽  
Supian Samat
Keyword(s):  
Hpge Detector ◽  
Building Materials ◽  
Activity Concentration ◽  
Natural Radionuclides ◽  
Naturally Occurring ◽  
High Purity Germanium ◽  
Activity Concentrations ◽  
Naturally Occurring Radionuclides ◽  
Measured Activity ◽  
Materials Used

Abstract The activity concentrations of 226Ra, 232Th and 40K radionuclides from common building materials used by Malaysian people for construction purposes were studied using High-Purity Germanium (HPGe) detector. The measured activity concentrations of the aforementioned radionuclides range from 10 ± 1 Bq kg−1 (limestone) to 155 ± 61 Bq kg−1 (feldspar), 12 ± 3 Bq kg−1 (limestone) to 274 ± 8 Bq kg−1 (kaolin) and 62 ± 19 Bq kg−1 (limestone) to 1114 ± 20 Bq kg−1 (pottery stone) for 226Ra, 232Th and 40K, respectively. The measured activity concentrations of the natural radionuclides reported herein were found to be in accordance with other previous studies. In general, the activity concentration of the natural radionuclides revealed that all the determined values were below the recommended limit.

Measurement of radon concentration in kindergartens and schools in Nis, Serbia

2019 ◽  
Vol 17 (2) ◽  
pp. 191-197
Author(s):  
Vesna Manic ◽  
Goran Manic ◽  
Branko Radojkovic ◽  
Dusica Vucic ◽  
Dragoslav Nikezic ◽  
...  
Keyword(s):  
Standard Deviation ◽  
Gamma Spectrometry ◽  
Radon Concentration ◽  
Hpge Detector ◽  
Activity Concentration ◽  
Average Value ◽  
Activity Concentrations ◽  
Log Normal ◽  
The Town ◽  
Log Normal Distribution

In this study, the activity concentration of radon, 222Rn, in kindergartens and schools in the town of Nis, Serbia, was explored. The method of active charcoal was applied. The measurements were carried out by gamma - spectrometry with HPGe detector. The results belong to the range of 15 Bq/m3 - 256 Bq/m3, with an average value of 59.7 Bq/m3 and a standard deviation of 25.3 Bq/m3. It was shown that data are distributed according to the log-normal distribution, and that is no correlation between indoor 222Rn concentrations and the activity concentrations of radium, 226Ra, in the soil.

scholarly journals Study on analyzing overlaped peaks using the Gold algorithm of unfolding

2016 ◽  
Vol 19 (2) ◽  
pp. 71-79
Author(s):  
Loan Thi Hong Truong ◽  
Hoa Phuc Long Cao ◽  
Phuong Dang Nguyen ◽  
My Thi Thao Dang ◽  
Huy Quang Ngo
Keyword(s):  
Gamma Spectrometry ◽  
Environmental Samples ◽  
Hpge Detector ◽  
Gamma Spectrum ◽  
Low Level ◽  
Continuum Region ◽  
Gamma Spectra

In this work, we initially applied the Gold unfolding algorithm to deconvolute continuum region in the gamma spectra and to analyze its overlaped peaks for the gamma spectrometry using HPGe detector. The results could be used to analyse overlaped peaks of low level gamma spectrum for environmental samples.

NATURAL RADIATION EXPOSURE TO THE PUBLIC IN MINING AND ORE BEARING REGIONS OF CAMEROON

2019 ◽  
Vol 184 (3-4) ◽  
pp. 391-396 ◽  
Author(s):  
Saïdou ◽  
Shinji Tokonami ◽  
Masahiro Hosoda ◽  
Ndjana Nkoulou II Joseph Emmanuel ◽  
Naofumi Akata ◽  
...  
Keyword(s):  
Radiation Exposure ◽  
Indoor Radon ◽  
Natural Radionuclides ◽  
Survey Method ◽  
Natural Radiation ◽  
Joint Research ◽  
The Public ◽  
Activity Concentrations ◽  
Joint Research Project ◽  
Thoron Progeny

Abstract Within the framework of a joint research project on natural radiation exposure and its health effects in Cameroon from 2014 to 2017, the Institute of Geological and Mining Research and the Hirosaki University worked together to carry out natural radiation survey in mining and ore bearing regions of Cameroon. Air kerma rates were measured using car-borne survey method. In-situ gamma spectrometry was used to determine activity concentrations of 238U, 232Th and 40K in soil. A total of 450 RADUET detectors and 350 thoron progeny monitors were deployed in dwellings of the study areas for 2–3 months, collected and analysed. Although natural radioactivity level seems to be normal in most of the surveyed areas, there are many points where activity concentrations of natural radionuclides are largely above the world average values. Indoor radon, thoron and thoron progeny results show the importance to put in place the national radon plan in Cameroon. It was also pointed out that thoron cannot be neglected when assessing inhalation dose.

scholarly journals Study of the minimum detectable activity in gamma-ray spectrometry with various shielding configurations

2017 ◽  
Vol 1 (T4) ◽  
pp. 56-62
Author(s):  
Vuong Quang Le ◽  
Nguyen Hoang Vo ◽  
Chuong Dinh Huynh ◽  
Phuc Minh Lau ◽  
Thanh Thien Tran ◽  
...  
Keyword(s):  
Environmental Samples ◽  
Gamma Ray ◽  
Background Radiation ◽  
Environmental Radioactivity ◽  
Minimum Detectable Activity ◽  
The Other ◽  
Gamma Ray Spectrometry ◽  
Gamma Spectrometer ◽  
Detectable Activity ◽  
Gamma Ray Spectrometer

In the environmental radioactivity analyzing methods using gamma-ray spectrometry, the natural activities of radionuclides were required to be higher than the minimum detectable activity (MDA). To reduce MDA, one of the popular methods is to improve the ability of reducing the background radiation of the gamma-ray spectrometry. In this work, we designed the shielding configuration with 5 cm lead and 2 mm copper (thickness of walls and top). The MDAs of gamma-ray spectrometer were 2.6–4.24 times times for 40K (1460.8 keV), 232Th (208Tl- 2614.5 keV) and 238U (214Pb- 352 keV; 214Bi- 609.3 keV, 214Bi- 1764.5 keV). In the other hand, MDA for 238U with this shielding configuration is smaller than the activity of 238U inside surface soils in Vietnam. These results showed that the gamma spectrometer with NaI(Tl) detector and this shielding configuration was suitable for measurements activity of 238U in the environmental samples.

scholarly journals Assessment the Natural Radioactivity of Radionuclides ( 226Ra, 232Th, 40K, and 137Cs) in Wheat Grain

2021 ◽  
Vol 9 (1) ◽  
pp. 95-102
Author(s):  
Zakariya A. Hussein ◽  
Najeba F. Salih ◽  
Shalaw Z. Sedeeq
Keyword(s):  
Germanium Detector ◽  
Wheat Grain ◽  
Radium Equivalent Activity ◽  
Average Value ◽  
Activity Concentrations ◽  
Gonadal Dose ◽  
Radium Equivalent ◽  
Measured Activity ◽  
Average Activity ◽  
Reported Data

This paper investigates the activity concentration of radionuclides (226Ra, 232Th, 40K and 137Cs) in the wheat grain samples using a high-purity germanium detector. Thirty-six wheat grain samples were collected from different locations of Koya City, Iraqi Kurdistan region. Average activity concentrations of 226Ra, 232Th and 40K in wheat grain are found to be 0.407 ± 0.097 Bq.kg-1 for 226Ra, 0.36 ± 0.14 Bq.kg-1 for 232Th and 109.25± 2.214 Bq.kg-1 for 40K, respectively. The measured activity concentrations for the radionuclides are compared with the reported data from other countries. In addition, the fallout radionuclide of 137Cs has no detection of in the wheat grain samples. The radium equivalent activity Raeq, internal and external hazard indices Hin and Hex, and annual gonadal dose equivalent are calculated for the measured samples. The total ingestion dose is 113.19 µSv.y-1, which is below the world average value of 290 µSv.y-1.

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