Development of an appropriate method for measuring gross alpha activity concentration in low-mass size-fractionated samples of sediment using solid-state nuclear track detectors

Hanfi, Mohamed Y.; Yarmoshenko, Ilia V.; Seleznev, Andrian A.; Онищенко, А. Д.; Zhukovsky, Michael

doi:10.1007/s10967-020-07020-z

Cited by 13 publications

(10 citation statements)

References 23 publications

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“…The method of the GA activity measurements in solid grained samples of low mass (about 5 g) was developed by [19]. First, the applied detectors are calibrated using a monazite sample with a known thorium activity concentration (190 ± 15% Bq/g).…”

Section: Gross Alpha Measurement Methodsmentioning

confidence: 99%

“…Measuring the GA and GB concentration in urban environment compartments has become frequently important because of anxieties about contamination of the environment with radioactive substances through natural and anthropogenic activities leading to human exposure [14,15]. The objective of the present studyis to assessthe concentration of gross alpha (GA) and gross beta (GB) activity in size-fractionated samples obtained from theurban surface deposited sediment in Russian cities: Ekaterinburg (Ekb), Nizhny Novgorod(NN) andRostov-On-Don (RND).An essential feature of applied measurements methods consists ofthe possibility to detect alpha and beta emitters content in samples ofa small amount (mass and volume) of fractionated material.…”

Section: Introductionmentioning

confidence: 99%

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Gross Alpha and Gross Beta Activity Concentrations in Dust Fraction of Urban Surface Deposited Sediment in Russian Cities

Hanfi¹,

Seleznev²,

Yarmoshenko³

2021

Preprint

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Study of gross alpha (GA) and gross beta (GB) activity in road and surface deposited sediments were performed in various geographical areas in three Russian cities. To perform radiation measurements, new methods were applied which allow dealing with low mass and low volume dust size (2-100μm) samples obtained after the size fractionation procedure. The 2-10 μm fraction size has the highest gross beta activity concentration (GB)– 1.32Bq/g in Nizhny Novgorod (NN) and Rostov-On-Don (RND) while the 50-100 μm fraction size in Ekaterinburg. This is maybe associated with the subsistence of radionuclides that conveyed through natural processes and anthropogenic applications. The highest gross alpha activity concentration (GA) in fraction sizes was found in Rostov-on-Don city within the 50-100 μm– 0.22Bq/g. The fraction size 50-100 μmhas a higher gross alpha activity concentration than 2-10 and 10-50 μmfraction sizes due to natural partitioning of the main minerals constituting the urban surface deposited sediment (USDS). The geochemical processes that occur during the formation and transportation of USDS are reflected in the observed dependencies.Developed experimental methods of radiation measurements allowed to the extent the methodological base of urban geochemical studies.

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Section: Gross Alpha Measurement Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Gross Alpha and Gross Beta Activity Concentrations in Dust Fraction of Urban Surface Deposited Sediment in Russian Cities

Hanfi¹,

Seleznev²,

Yarmoshenko³

2021

Preprint

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“…Be, 7 Be and 3 H) exist at trace levels, forming a minor part of radiation exposure to humans, albeit at levels varying with altitude and location. About 96% of the total radiation dose to the world population is from these natural sources, while 4% arises from anthropogenic sources [2,4].…”

Section: Introductionmentioning

confidence: 99%

“…Prospecting for and research on important minerals is being carried out in many parts of the world. Uranium mining in particular is unique in that currently the ores represent the only source of nuclear fuel for nuclear power production [6,7]. In uranium prospecting, the principal sources of occupational exposure are inhaled radon, thoron, and their respective progenies from the 238 U and 232 Th series, along with the associated external irradiation gamma rays [8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

The presence of radioactive heavy minerals in prospecting trenches and concomitant occupational exposure

et al. 2021

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Uranium, perhaps the most strategically important component of heavy minerals, finds particular significance in the nuclear industry. In prospecting trenches, the radioactivity of 238U and 232Th provides a good signature of the presence of heavy minerals. In the work herein, the activity concentrations of several key primordial radionuclides (238U, 232Th, and 40K) were measured in prospecting trenches (each of the latter being of approximately the same geometry and physical situation). All of these are located in the Seila area of the South Eastern desert of Egypt. A recently introduced industry standard, the portable hand-held RS-230 BGO gamma-ray spectrometer (1024 channels) was employed in the study. Based on the measured data, the trenches were classified as either non-regulated (U activity less than 1000 Bq kg-1) or regulated (with 238U activity more than 1000 Bq kg-1). Several radiological hazard parameters were calculated, statistical analysis also being performed to examine correlations between the origins of the radionuclides and their influence on the calculated values. While the radioactivity and hazard parameters exceed United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR) guided limits, the mean annual effective doses of 0.49 and 1.4 mSv y-1 in non-regulated and regulated trenches respectively remain well below the International Commission on Radiological Protection (ICRP) recommended 20 mSv/y maximum occupational limit. This investigation reveals that the studied area contains high uranium content, suitable for extraction of U-minerals for use in the nuclear fuel cycle.

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“…Measuring the gross alpha and gross beta concentration in urban environmental compartments have become increasingly important due to concerns about radioactive environmental contamination through natural and anthropogenic activities resulting in human exposure [17,18]. The objective of the present work is to study the concentration of gross alpha and gross beta activity in size-fractionated samples obtained from the USDS in three Russian cities: Ekaterinburg, Rostov-On-Don, and Nizhny Novgorod.…”

Section: Introductionmentioning

confidence: 99%

Gross Alpha and Gross Beta Activity Concentrations in the Dust Fractions of Urban Surface-Deposited Sediment in Russian Cities

2021

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Studies of gross alpha and gross beta activity in road- and surface-deposited sediments were conducted in three Russian cities in different geographical zones. To perform radiation measurements, new methods were applied which allow dealing with low mass and low volume dust-sized (2–100 μm) samples obtained after the size fractionation procedure. The 2–10 μm fraction size had the highest gross beta activity concentration (GB)—1.32 Bq/g in Nizhny Novgorod and Rostov-On-Don, while the 50–100 μm fraction size was most prominent in Ekaterinburg. This can be attributed to the presence of radionuclides that are transferred through natural and anthropogenic processes. The highest gross alpha activity concentration (GA) in fraction sizes was found in Rostov-on-Don city within the 50–100 μm range—0.22 Bq/g. The fraction sizes 50–100 μm have a higher gross alpha activity concentration than 2–10 μm and 10–50 μm fraction sizes due to natural partitioning of the main minerals constituting the urban surface-deposited sediment (USDS). Observed dependencies reflect the geochemical processes which take place during the formation and transport of urban surface sediments. Developed experimental methods of radiation measurements formed the methodological base of urban geochemical studies.

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Development of an appropriate method for measuring gross alpha activity concentration in low-mass size-fractionated samples of sediment using solid-state nuclear track detectors

Cited by 13 publications

References 23 publications

Gross Alpha and Gross Beta Activity Concentrations in Dust Fraction of Urban Surface Deposited Sediment in Russian Cities

Gross Alpha and Gross Beta Activity Concentrations in Dust Fraction of Urban Surface Deposited Sediment in Russian Cities

The presence of radioactive heavy minerals in prospecting trenches and concomitant occupational exposure

Gross Alpha and Gross Beta Activity Concentrations in the Dust Fractions of Urban Surface-Deposited Sediment in Russian Cities

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