scholarly journals Determination the Index of Radioactive Risk In The Batang Kuantan River

2018 ◽  
Vol 7 (2.13) ◽  
pp. 429
Author(s):  
Rindi Genesa Hatika ◽  
Indang Dewata ◽  
Alizar . ◽  
Purwo Subekti ◽  
Saiful Anwar
Keyword(s):  
Gold Mining ◽  
Gamma Ray ◽  
Background Radiation ◽  
Raw Materials ◽  
Environmental Damage ◽  
Gamma Ray Spectrometry ◽  
Mining Activities ◽  
Radioactive Elements ◽  
Limit Value ◽  
Decay Series

NORM is a material containing radioactive elements that exist naturally. All minerals and raw materials contain radionuclides from nature, most important for radiation protection purposes are the U-238, Th-232 and K-40 decay series. This element naturally grows and is considered a major contributor to the annual individual background radiation dose. Therefore, each individual can be exposed to NORM through various activities they do, one of which is gold mining activities. Gold mining in addition to causing exposure to NORM, is believed also can cause significant environmental damage. This study aims to determine the index of radioactive risks that resulted from gold mining activities in the batang kuantan river. The sample used for this research is soil from batang kuantan river which then analyzed using gamma ray spectrometry. The results show that the index of radioactive risk value indicated by all soil samples in the batang kuantan river is still below the predetermined maximum limit value.  

scholarly journals DAMPAK PENAMBANGAN EMAS TERHADAP LINGKUNGAN DI DESA TAMILOUW KECAMATAN AMAHAI, KABUPATEN MALUKU TENGAH

2021 ◽  
Vol 5 (1) ◽  
pp. 90-96
Author(s):  
Debbi V Pattimahu ◽  
Antho Netty Siahaya ◽  
Terezia V Pattimahu
Keyword(s):  
Gold Mining ◽  
Economic Aspect ◽  
Social Aspects ◽  
Environmental Damage ◽  
Mining Activities ◽  
Age And Gender ◽  
The Social ◽  
And Gender ◽  
Traditional Processing ◽  
The Impact

Natural resource management that does not pay attention to the principles of conservation of natural resources and the environment will have negative implications for environmental sustainability. With the discovery of gold on the coast of Tamiouw Village at this time, residents' activities have shifted to gold mining activities in the coastal area of Tamilouw. This study aims to determine the impact of gold mining on the physical environment in Tamilouw Village, Amahai District, Central Maluku Regency, as well as to determine the impact of gold mining on the social and economic environment of the local community. The research  was  conducted  using  non-experimental  methods,  namely exploratory descriptive,  field observations  and literature study. The results showed that gold mining carried out in Tamilouw Village uses mercury in the process of separating gold from sand, although there are also some people who carryout traditional processing. What some people are worried about is that the disposal of mercury waste is not carried out according to the required procedures, so that it will have an impact on environmental damage. The existence of mining activities does not affect the social aspects, namely education, health and age and gender; while from the economic aspect, it also contributes to increasing people's income. Keywords : Gold mining, environment, Tamilouw Villageout traditional processing. What some people are worried about is that the disposal of mercury waste is not carried out according to the required procedures, so that it will have an impact on environmental damage. The existence of mining activities does not affect the social aspects, namely education, health and age and gender; while from the economic aspect, it also contributes to increasing people's income.

scholarly journals Characteristics of natural radiation background at the Callio Lab (Finland) performed within the BSUIN project

2020 ◽  
Author(s):  
Jan Kisiel ◽  
Kinga Polaczek-Grelik ◽  
Katarzyna Szkliniarz ◽  
Agata Walencik-Łata ◽  
Jari Joutsenvaara ◽  
...  
Keyword(s):  
Baltic Sea ◽  
Gamma Ray ◽  
Background Radiation ◽  
Gamma Ray Spectrometry ◽  
Radiation Background ◽  
Rock Samples ◽  
Baltic Sea Region ◽  
Semiconductor Spectrometer ◽  
The Baltic

<p>The BSUIN (Baltic Sea Underground Innovation Network) aims to enhance the accessibility of the underground laboratories in the Baltic Sea region for innovation, business and science. One of the BSUIN project activities is characterization of natural background radiation (NBR) in underground facilities. In this talk results from NBR measurements performed in Callio Lab, Pyhäsalmi, Finland, at the depth of 4100 m w.e. will be presented. The in-situ gamma spectra were collected with the use of  HPGe semiconductor spectrometer, whereas the  concentration of radon were measured with RAD7 electronic detector. In addition, the water and rock samples were taken for laboratory analysis in Institute of Physics, University of Silesia, Poland. The concentration radioisotopes in water samples were performed by using a liquid scintillation α/β counter (LSC) and α-particle spectrometry, while the concentration of radioisotopes in rock samples were performed by using laboratory gamma ray spectrometry and also α-particle spectrometry.</p>

scholarly journals ESTIMATION ON THE RADIOLOGICAL LEVEL OF NATURAL OCCURRING RADIONUCLIDES PRESENT IN FLOODED SOIL SAMPLES IN KADUNA NORTH, NIGERIA

2017 ◽  
Vol 5 (10) ◽  
pp. 81-91
Author(s):  
P.M. Gyuk ◽  
J.O. Anaegbu ◽  
H.O. Aboh ◽  
R. Daniel ◽  
A. Aruwa ◽  
...  
Keyword(s):  
Gamma Ray ◽  
Background Radiation ◽  
Absorbed Dose ◽  
Soil Samples ◽  
Gamma Ray Spectrometry ◽  
Published Data ◽  
Absorbed Dose Rate ◽  
Radium Equivalent Activity ◽  
Activity Concentrations ◽  
Radium Equivalent

The background radiation of the areas was collected at random for each point using a rados survey meter. The detectors (two rados survey meter were used) were placed 1 meter above the ground with the operator positioned a few meters away. Three (3) readings were taking from each detector in other to reduce error or reach accuracy in obtaining the background readings from each randomly selected point where soil samples were later collected. In the current study, the concentration levels of naturally occurring radioactive materials (NORMs) of 40K, 232Th, and 238U in the surface soil samples of selected areas in kigo road new extension Kaduna north, Kaduna in Nigeria were studied. The collected soil samples were analyzed by means of gamma-ray spectrometry. The mean activity concentrations of the natural occurring radionuclides of  226Ra, 232Th and 40K in the soil samples were estimated to be 62, 78.35, 227.17 Bq/kg respectively for kigo road new extension respectively. Radium equivalent activity, absorbed dose rate, annual effective dose equivalent were also calculated for assessment of radiological risk. External hazard value (Hex) is between 0.3163 and 0.9557 and Internal hazard value is between 0.4462 and 1.1618. The worldwide average activity concentrations of 226Ra, 232Th and 40K in soil samples from various studies around the world have values of 37, 30 and 400 Bq/kg respectively [UNSCEAR, 2000]. The values compared well with published data from UNSCEAR shows Ra-226, Th-232 from the location are well above the standards while K-40 below the risk value.

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 GAMMA-RAY SPECTROMETRY FOR DISTINGUISHING ACID AND BASIC ROCKS OF THE SERRA GERAL FORMATION, IN THE SERRA GAÚCHA WINE REGION, BRAZIL

2016 ◽  
Vol 34 (4) ◽  
Author(s):  
Rudi Cesar Comiotto Modena ◽  
Rosemary Hoff ◽  
André Rodrigo Farias ◽  
Jorge Antônio Viel ◽  
Osmar Gustavo Wohl Coelho
Keyword(s):  
Volcanic Rock ◽  
Gamma Ray ◽  
Rio Grande ◽  
Gamma Ray Spectrometry ◽  
Rio Grande Do Sul ◽  
Geophysical Method ◽  
Radioactive Elements ◽  
Rock Types ◽  
Wine Region ◽  
Basic Rocks

ABSTRACT. The gamma-ray spectrometric research has allowed for observation of the distribution of radioactive elements such as K, U and Th for recognizing the radioactive signatures of different rock types. The objective of this study was to evaluate the possibility to distinguish between acid and basic rocks of the Serra Geral Formation, in the Serra Gaúcha wine region in the state of Rio Grande do Sul (Brazil) through gamma-ray spectrometry techniques. This study contributed to geologically...Keywords: geophysical method, wine terroir, volcanic rock. RESUMO. A pesquisa por gamaespectrometria tem permitido observar a distribuição de elementos radioativos, tais como K, U e Th reconhecendo as assinaturas radioativas de diferentes tipos de rocha. O objetivo deste estudo foi avaliar a possibilidade de distinguir entre as rochas ácidas e básicas da Formação Serra Geral, na região vitivinícola Serra Gaúcha, no estado do Rio Grande do Sul (Brasil) por meio de técnicas de gamaespectrometriaPalavras-chave: m´étodos geofísicos, terroir vitivinícola, rocha vulcânica.

scholarly journals Radiometric properties of sepiolite minerals from quarries in central Anatolia of Turkey

2019 ◽  
Vol 34 (2) ◽  
pp. 149-156 ◽  
Author(s):  
Aybaba Hancerliogullari ◽  
Madee Ali ◽  
Ash Kurnaz ◽  
Seref Turhan
Keyword(s):  
Dose Rate ◽  
Gamma Ray ◽  
Raw Materials ◽  
Gamma Dose ◽  
Cement Industry ◽  
Raw Material ◽  
Central Anatolia ◽  
Gamma Ray Spectrometry ◽  
Radon Emanation ◽  
Agriculture Fertilizer

Sepiolite is a naturally occurring clay mineral of sedimentary origin and is a magnesium hydrosilicate. Sepiolite has been widely used as an additive raw material in ceramics and cement industry, pharmaceutical, cleaning-detergent, paper, paint, cosmetic agriculture, fertilizer, etc. In this study, the natural radioactivity levels, radon emanation coefficients and radon exhalation rates of 30 sepiolite samples collected from open three sepiolite quarries (Beylikova, Polath and Sivrihisar) in Central Anatolia region of Turkey were determined by using a gamma-ray spectrometry with an HPGe detector. The average absorbed gamma dose rates directly measured in Beylikova, Polath and Sivrihisar open three sepiolite quarries located in Central Anatolia region of Turkey were found as 59, 65, and 64 nGyh?1, respectively. The average activity concentrations of 226Ra, 232Th, and 40K in 30 sepiolite samples collected from those quarries were found as 38.6, 12.4, and 67.4 Bqkg?1, respectively. The average emanation coefficient and exhalation rate of radon of sepiolite samples were determined as 22 % and 0.065 Bqkg?1h?1, respectively. Also, radiological parameters (outdoor absorbed gamma dose rate, annual effective dose rate, external and internal index) were estimated to evaluate the use of sepiolite samples as additive raw materials in the building sector.

URANIUM MEASUREMENT BY AIRBORNE GAMMA‐RAY SPECTROMETRY

Geophysics ◽  
1975 ◽  
Vol 40 (3) ◽  
pp. 503-519 ◽  
Author(s):  
R. L. Grasty
Keyword(s):  
Point Source ◽  
Gamma Ray ◽  
Radioactive Decay ◽  
High Energy ◽  
Gamma Ray Spectrometry ◽  
High Energy Radiation ◽  
Energy Radiation ◽  
Airborne Measurement ◽  
Decay Series ◽  
Different Depths

In the airborne measurement of uranium, window type gamma‐ray spectrometers are used and it is necessary to correct for scattered high energy radiation from thallium 208 in the thorium decay series. This radiation can be scattered in the crystal, in the ground, and in the air. A theory, analogous to the theory of radioactive decay, is developed; it can adequately explain the spectrum buildup in the uranium window for a point source of thorium oxide immersed to different depths in water and for a detector above the water. The theory is extended to predict the buildup as a function of altitude for detectors of different sizes and shows that errors in the airborne measurement of uranium can be, significant if no allowance is made for radiation scattered in the ground and in the air.

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