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Poje Sovilj M, Miklavčić I, Šmit G, Stanić D, Radolić V. Estimation of the annual effective dose from exposure to radon in drinking water in Croatia. Appl Radiat Isot 2023; 200:110950. [PMID: 37481924 DOI: 10.1016/j.apradiso.2023.110950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 07/05/2023] [Accepted: 07/17/2023] [Indexed: 07/25/2023]
Abstract
Radon is known as the main source of radiation for the general public. Results of extensive measurements of radon in water samples collected from private wells, natural springs and public water supply in Croatia are presented and annual effective doses are estimated. Measurements were performed by two different methods: the emanometry method (by using the AlphaGUARD instrument with additional AquaKIT module) and/or the liquid scintillation method (by using LSC TriCarb 2900). Water samples were collected in public water supplies in urban areas as well as private wells and springs in rural areas. The obtained average radon activity concentration based on the extensive measurement of almost 1000 water samples is 4.1 ± 1.9 Bq/l, with a minimum value of 0.2 and maximum value of 36 Bq/l respectively. The wide range of measured values is a consequence of the source of the water sample (ground/natural water versus treated water) as well as the geological structures around the water source. All estimated ingestion doses due to radon assuming consumption of 2 l of water per day from the observed source were within the interval 6.3-36.8 μSv (with calculated average and standard deviation 19.3 ± 10.3 μSv) for the water consumption from private wells and natural springs and 2.4-40.0 μSv (with calculated average and standard deviation 13.0 ± 10.5 μSv) for the water consumption from the public water supplies.
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Affiliation(s)
- Marina Poje Sovilj
- Department of Physics, University of Osijek, Trg Ljudevita Gaja 6, HR-31000, Osijek, Croatia
| | - Igor Miklavčić
- Department of Physics, University of Osijek, Trg Ljudevita Gaja 6, HR-31000, Osijek, Croatia
| | - Goran Šmit
- Department of Physics, University of Osijek, Trg Ljudevita Gaja 6, HR-31000, Osijek, Croatia
| | - Denis Stanić
- Department of Physics, University of Osijek, Trg Ljudevita Gaja 6, HR-31000, Osijek, Croatia
| | - Vanja Radolić
- Department of Physics, University of Osijek, Trg Ljudevita Gaja 6, HR-31000, Osijek, Croatia.
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Janković M, Jelić I, Rajačić M, Krneta Nikolić J, Vukanac I, Dimović S, Sarap N, Šljivić-Ivanović M. Distribution of Natural Radionuclides and 137Cs in Urban Soil Samples from the City of Novi Sad, Serbia-Radiological Risk Assessment. TOXICS 2023; 11:345. [PMID: 37112572 PMCID: PMC10145475 DOI: 10.3390/toxics11040345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 03/20/2023] [Accepted: 04/03/2023] [Indexed: 06/19/2023]
Abstract
This work presents the natural radioactivity distribution of 21 surface soil samples taken in the city of Novi Sad, Serbia. The analysis for radioactivity was performed using a gas low-level proportional counter for gross alpha and gross beta activity, while the specific activities of radionuclides were determined using HPGe detectors. The gross alpha activity of 20 samples was below the minimum detectable concentration (MDC), while in 1 sample it was 243 Bq kg-1; the gross beta activity ranged from the MDC (11 samples) to 566 Bq kg-1. The gamma spectrometry measurements showed naturally occurring radionuclides 226Ra, 232Th, 40K, and 238U in all investigated samples, with average values (Bq kg-1) of 33.9, 36.7, 513.8, and 34.7, respectively. Natural radionuclide 235U was detected in 18 samples with activity concentrations in the range of 1.3-4.1 Bq kg-1, while in the other 3 samples, the values were below the MDC. The artificial 137Cs radionuclide was detected in 90 percent of the samples, with a maximum value of 21 Bq kg-1, while the other artificial radionuclides were not detected. Based on the obtained concentrations of natural radionuclides, hazard indexes were estimated, and radiological health risk was assessed. The results present the absorbed gamma dose rate in the air, annual effective dose, radium equivalent activity, external hazard index, and lifetime cancer risk.
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Lazarus M, Orct T, Sekovanić A, Skoko B, Petrinec B, Zgorelec Ž, Kisić I, Prevendar Crnić A, Jurasović J, Srebočan E. Spatio-temporal monitoring of mercury and other stable metal(loid)s and radionuclides in a Croatian terrestrial ecosystem around a natural gas treatment plant. ENVIRONMENTAL MONITORING AND ASSESSMENT 2022; 194:481. [PMID: 35668141 DOI: 10.1007/s10661-022-10140-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Accepted: 05/27/2022] [Indexed: 06/15/2023]
Abstract
The natural gas industry bears a certain contamination risk to human and biota due to, among others, mercury, arsenic, and naturally occurring radioactive material content in gas. We tracked multiple stabile metal(loid)s and radionuclides within the natural gas treatment plant Molve, Croatia, ecosystem during the last decade through a comprehensive monitoring of soil, earthworms, moss, livestock (blood, milk, hair, urine, and feces from cows), and wildlife animals (brain, muscle, liver, and kidney of European hare and pheasant). The level of mercury and other stable metal(loid)s has shown temporal variation, but without an obvious trend. The found spatial differences in soil and earthworms were based on the differing soil characteristics of the sampled locations and exceeded the maximal allowable concentration of arsenic and zinc for agricultural soil. The status of essential copper, selenium, and zinc in cows, hares, and pheasants inclined towards deficiency. The measured stable metal(loid) levels in soil and animal samples were generally in the same range of values reported in earlier decades from the same area or non-polluted areas across Europe. The consumption of local cow and game products (e.g., milk, meat) can be considered safe for human health, although game offal is advised to be avoided as a food item due to the low risk of lead and cadmium's adverse effects. Although the activity concentrations of some radionuclides in moss were higher than reported for pristine areas, transfer from soil to moss was assessed as average (except for lead-210). Radiological risk to human and biota around the gas treatment plant Molve was estimated as negligible.
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Affiliation(s)
- Maja Lazarus
- Analytical Toxicology and Mineral Metabolism Unit, Institute for Medical Research and Occupational Health, Ksaverska c. 2, 10000, Zagreb, Croatia.
| | - Tatjana Orct
- Analytical Toxicology and Mineral Metabolism Unit, Institute for Medical Research and Occupational Health, Ksaverska c. 2, 10000, Zagreb, Croatia
| | - Ankica Sekovanić
- Radiation Protection Unit, Institute for Medical Research and Occupational Health, Ksaverska c. 2, 10000, Zagreb, Croatia
| | - Božena Skoko
- Radiation Protection Unit, Institute for Medical Research and Occupational Health, Ksaverska c. 2, 10000, Zagreb, Croatia
| | - Branko Petrinec
- Radiation Protection Unit, Institute for Medical Research and Occupational Health, Ksaverska c. 2, 10000, Zagreb, Croatia
| | - Željka Zgorelec
- Department of General Agronomy, Division of Agroecology, Faculty of Agriculture, University of Zagreb, Svetošimunska cesta 25, 10000, Zagreb, Croatia
| | - Ivica Kisić
- Department of General Agronomy, Division of Agroecology, Faculty of Agriculture, University of Zagreb, Svetošimunska cesta 25, 10000, Zagreb, Croatia
| | - Andreja Prevendar Crnić
- Department of Pharmacology and Toxicology, Faculty of Veterinary Medicine, University of Zagreb, Heinzelova 55, 10000, Zagreb, Croatia
| | - Jasna Jurasović
- Analytical Toxicology and Mineral Metabolism Unit, Institute for Medical Research and Occupational Health, Ksaverska c. 2, 10000, Zagreb, Croatia
| | - Emil Srebočan
- Department of Pharmacology and Toxicology, Faculty of Veterinary Medicine, University of Zagreb, Heinzelova 55, 10000, Zagreb, Croatia
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