Journal Of Environmental Radioactivity Research Articles

222Rn Activity Concentration Measurement and its Radiological Risks in the Environment of Barserin Village, Erbil-Iraq

In the present study, 222Rn activity concentrations were measured in Barserin village environment including (indoor rooms, building materials, soil and drinking water samples). The measurements were carried out using a couple of passive and active methods. The obtained results of the average indoor radon concentration in 28 dwelling rooms (living room+ kitchen) were found to be (91±09) Bq.m-3, except in houses H3 and H12, which had radon activity concentrations above the limited value declared by Environmental Protection Agency 148Bq.m-3. Living rooms recorded higher value of radon activity concentrations than kitchens by a factor of 1.36. Average radon activity concentrations emanated from soil and building material samples from the same region were found to be (57±12 and 45±08) Bq.m-3, respectively. The higher values of radon activity concentrations were reported for black shale rock (127±08) Bq.m-3and soil sample S6 (115±20) Bq.m-3. For drinking water, it was found that 75% of samples had radon activity concentrations more than the maximum contaminant level 11.1Bq.l-1 proposed by Environmental Protection Agency. Finally, the present results of average annual effective doses for lung reported due to radon in indoor rooms were quite higher than the worldwide annual effective dose value of 1.2 mSv.y-1, suggested by ICRP, while it was within the range of the action level of (3-10) mSv.Y-1recommended by UNSCEAR. Simultaneously with these results, 75% of drinking water samples had their annual effective doses exceeding the annual effective dose limit of 0.1 mSv.y-1 suggested by WHO. Reference ABDULLAH, K. O., MUHAMMED, S. Z. & HUSSEIN, A. M. 2015. Assessment of Rn and U concentrations in the soil of Qadafery, Kalar and Zarayan located in Sulaimani governorate of Kurdistan region-Iraq. American Journal of Environmental Protection, 4, 40-44. ABOJASSIM, A. A., GAZALY, H. H. A., AL-TAWEEL, M. H. & KADHIM, S. H. 2015. Radon concentrations in selected samples of tap water in Baghdad Government/Iraq. Research Journal of Applied Sciences, Engineering and Technology, 11, 1358-1364. ABUELHIA, E. 2017. Evaluation of annual effective dose from indoor radon concentration in Eastern Province, Dammam, Saudi Arabia. Radiation Physics and Chemistry, 140, 137-140. AHMAD, S. T., ALMUHSIN, I. A. & HAMAD, W. M. 2021. Radon activity concentrations in Jale and Mersaid warm water springs in Koya District, Kurdistan Region-Iraq. Journal of Radioanalytical and Nuclear Chemistry, 1-16. ALGHAMDI, A. S. & ALEISSA, K. A. 2014. Influences on indoor radon concentrations in Riyadh, Saudi Arabia. Radiation Measurements, 62, 35-40. AMIN, S. A. 2015. Measurements of radon exhalation rates in building materials used in Iraqi houses. International Journal of Applied Sciences and Engineering Research, 4, 437-442. ASANO, T., SATO, K. & ONODERA, J.-I. 2001. United nations scientific committee on the effects of atomic radiation 2000 report. Japanese Journal of Health Physics, 36, 149-158. AZEEZ, H. H. 2010. A Study of Radon and Thoron Gases Release from Iraqi-Kurdistan Building Materials Using Passive and Active Methods. MSc Thesis, Salahaddin University. AZHDARPOOR, A., HOSEINI, M., SHAHSAVANI, S., SHAMSEDINI, N. & GHAREHCHAHI, E. 2021. Assessment of excess lifetime cancer risk and risk of lung cancer due to exposure to radon in a middle eastern city in Iran. Radiation Medicine and Protection. BATTAWY, A. A., TAWFIQ, N. F., NAJAM, L. A., JAAFAR, M. S. & MUSTAFA, I. S. 2016. Indoor radon concentration measurement in different Iraqi radiation locations. International Journal of Recent Research and Review, 4, 1-7. BELLEN R.C. VAN, D. W. R., AND MORTON, D 1950. Lexique stratingraphique international Fase10a. DUGGAL, V., SHARMA, S. & MEHRA, R. 2017. Radon levels in drinking water of Fatehabad district of Haryana, India. Applied Radiation and Isotopes, 123, 36-40. DURRIDGE.COM. RAD-7 Electronic Radon Detector User Manual [Online]. Available: https://durridge.com/documentation/RAD7%20Manual.pdf [Accessed 25-10-2021]. EL-TAHER, A. M., ABOJASSIM, A. A., NAJAM, L. A. & MRAITY, H. 2020. Assessment of annual effective dose for different age groups based on radon concentrations in the groundwater of Qassim, Saudi Arabia. Iranian Journal of Medical Physics, 17, 15-20. EPA, U. What is EPA's Action Level for Radon and What Does it Mean [Online]. Available: https://www.epa.gov/radon/what-epas-action-level-radon-and-what-does-it-mean [Accessed 31-October 2021]. EZZULDDIN, S. K. & MANSOUR, H. H. 2020. Radon and radium activity concentration measurement in drinking water resources in Kurdistan Region-Iraq. Journal of Radioanalytical and Nuclear Chemistry, 324, 963-976. FAKHRI, Y., MAHVI, A. H., LANGARIZADEH, G., ZANDSALIMI, Y., AMIRHAJELOO, L. R., KARGOSHA, M., MORADI, M., MORADI, B. & MIRZAEI, M. 2016. Effective dose of radon 222 bottled water in different age groups humans: Bandar Abbas City, Iran. Global journal of health science, 8, 64. FATIMH, A., EL-TAHER, A. & ELZAIN, A. 2017. Characterization of radon concentration and annual effective dose of soil surrounding a refinery area, Ras Tanura, Saudi Arabia. Journal of Environmental Science and Technology, 10, 311-319. FLEISCHER, R. L. & MOGRO‐CAMPERO, A. 1978. Mapping of integrated radon emanation for detection of long‐distance migration of gases within the Earth: Techniques and principles. Journal of Geophysical Research: Solid Earth, 83, 3539-3549. ESPINOSA*, J. I. G., J. R/CKARDS*,AND R.B. GAMMAGE 1999. DISTRIBUTION OF INDOOR RADON LEVELS IN MEXICO. Radiation Measurements, 31, 355-358. HADEEL G. I, K. H. M. 2015. Find an Empirical Formula for Indoor Radon Measurement Emitting from Building Materials. Master, University of Baghdad. HUSSEIN, Z. A., JAAFAR, M. S. & ISMAIL, A. H. 2013. Measurement of radium content and radon exhalation rates in building material samples using passive and active detecting techniques. International Journal of Scientific and Engineering Research, 4, 1827-1831. ICRP 1993. Protection against radon-222 at home and at work. ICRP Publication 65. Ann. ICRP, 23, 1-45. ISMAIL, A. H. & JAAFAR, M. S., 2010A Indoor radon concentration and its health risks in selected locations in Iraqi Kurdistan using CR-39 NTDs. 2010 4th International Conference on Bioinformatics and Biomedical Engineering, IEEE, 1-8. ISMAIL A. H., Measurement of Radon Activity concentration in Iraqi Kurdistan Soil by Using CR-39 Nuclear Track Detectors”, M.Sc.Thesis, Univ. of Salahaddin, Erbil-Iraq, (2004). ISMAIL A.H. & JAAFAR M S., 2010B Relationship between radon concentration, ventilation rate and male infertility: A Case study in Iraqi Kurdistan. Int J of Low Radiation 7: 175-187. KADHIM, A. Y., AL-ATAYA, K. H. & ASWOOD, M. S. Distribution of Radon Concentration in Farmland Soil Samples in Al-Shamiyah City, Al-Qadisiyah, Iraq. Journal of Physics: Conference Series, 2020. IOP Publishing, 012089. KADHIM, I. H. & ALMAYYALI, A. O. M. 2014. Measurement of radon concentrations and their annual effective dose exposure in water from Al-Shomaly District of Babylon, Iraq. General Health and Medical Sciences, 1, 34-37. KADIM, S. & HADY, H. 2018. Measurement radon gas concentration in selected soil samples of the of Al-Nada district in Najaf. Int J Eng Technol, 7, 678-680. KAMAL HADAD A, *, R. D. B. & , S. M. 2007. Indoor radon monitoring in Northern Iran using passive and active measurements. Journal of Environmental Radioactivity, 95, 39-52. KNOEMA. 2019. Iraq Life expectancy, 1960-2020 - knoema.com [Online]. Available: [Accessed 31-October 2021]. MAHUR, A., KUMAR, R., SONKAWADE, R., SENGUPTA, D. & PRASAD, R. 2008. Measurement of natural radioactivity and radon exhalation rate from rock samples of Jaduguda uranium mines and its radiological implications. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 266, 1591-1597. MALAKOOTIAN, M., KHASHI, Z., IRANMANESH, F. & RAHIMI, M. 2014. Radon concentration in drinking water in villages nearby Rafsanjan fault and evaluation the annual effective dose. Journal of Radioanalytical and Nuclear Chemistry, 302, 1167-1176. MANSOUR, H., PER KHDAR, S., ABDULLA, H., MUHAMAD, N., OTHMAN, M. & QADER, S. 2005. Measurement of indoor radon levels in Erbil capital by using solid state nuclear track detectors. Radiation measurements, 40, 544-547. NAJAM, L. A., TAWFIQ, N. F. & MAHMOOD, R. H. 2013. Radon concentration in some building materials in Iraq using CR-39 track detector. International Journal of Physics, 1, 73-76. OPOKU-NTIM, I., ANDAM, A. B., AKITI, T. T., FLECTCHER, J. & ROCA, V. 2019. Annual effective dose of radon in groundwater samples for different age groups in Obuasi and Offinso in the Ashanti Region, Ghana. Environmental Research Communications, 1, 105002. RADIATION, U. N. S. C. O. T. E. O. A. 1986. Genetic and Somatic Effects of Ionizing Radiation, United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR) 1986 Report: Report to the General Assembly, with Scientific Annexes. RAHMAN, S. & ANWAR, J. 2008. Measurement of indoor radon concentration levels in Islamabad, Pakistan. Radiation measurements, 43, S401-S404. REF, I. International Commission on Radiological Protection Statement on Radon. REHMAN, S. 2005. Radon measurements with CR-39 detectors–implications for uranium ore analysis and risk assessment. Doctor thesis, PIEAS. SAHU, P., PANIGRAHI, D. C. & MISHRA, D. P. 2016. A comprehensive review on sources of radon and factors affecting radon concentration in underground uranium mines. Environmental Earth Sciences, 75, 617. SAMAL S. F , H. H. M. 2011. Diffusion Cup Technique provided with CR-39 Detector for long-term Radon Gas Activity measurement. Master, Salahaddin University. SAMAN K. E, H. H. M. 2014. Radon-222 and Radium-226 Activity Concentration Measurement in Erbil Governorate Drinking Water Resources Using Active and Passive Detection Methods. Master, Salahaddin University. STRUEMPLER, A. W. & JOHNSON, S. E. 1987. Radon and radon daughters: Characteristics, health effects and occurrences in dwellings in Chadron, Nebraska. VOGIANNIS, E. G. & NIKOLOPOULOS, D. 2015. Radon sources and associated risk in terms of exposure and dose. Frontiers in public health, 2, 207. WHO. 2021. Radon and health [Online]. WHO.web: WHO. Available: https://www.who.int/news-room/fact-sheets/detail/radon-and-health [Accessed 21/ February 2021]. Y HASAN, S. 2018. Determination of Radon Concentration and Annual Effective Dose Inside Houses in Left Side of Mosul City During Winter. Rafidain Journal of Science, 27, 156-162. Zakariya A, S. Mohamad, Asaad h. Ismail , A. Ammar, Radon exhalation rate from building materials using Passive Technique Nuclear Track Detectors, International Journal of Scientific and Engineering Research, 4 (7) (2013), p. 1276

Validation of a method for in situ determination of 137Cs soil contamination density in kitchen gardens using the portable spectrometer-dosimeter MKS AT6101D

The collection of representative soil samples in the territory of settlements and subsequent measurements of the content of radionuclides in these samples under laboratory conditions (the so-called “ex situ method”) is a generally accepted technology for determining the density of soil contamination with 137Cs in the populated areas contaminated due to the Chernobyl accident. Recently, as a supplement or alternative to the ex situ method, researchers are developing field (in situ) gamma-spectrometry methods. These methods allow determining the density of soil contamination with 137Cs directly on site, without soil sampling and laboratory analysis. At the same time, the in situ methodology has several limitations, the most important of which is a lack of generally recognized metrological basis for measurements and interpretation of results. Hence, before using a particular technique and measuring device for carrying out large-scale in situ measurements, it is necessary to validate (to assess the suitability) of the selected in situ method using an established ex situ method. The aim of this study was to validate the method for determining the density of 137Cs soil contamination in kitchen gardens using the MKS AT6101D spectrometer-dosimeter in situ. The method was recently presented by a Russian-Swedish-Belarusian group of researchers in an article published in the Journal of Environmental Radioactivity (https://doi.org/10.1016/j.jenvrad.2021.106562). To validate this method, we selected 10 representative kitchen garden plots. The plots were located in six settlements of the Bryansk region in Russia. The territory of the settlements had been heavily contaminated with 137Cs as a result of the Chernobyl accident: the officially established levels of the density of soil contamination by 137Cs ranged from 111 to 511 kBq/m2 in 2017. Field gamma-ray spectra were recorded at a height of 1 m above the ground in the center of kitchen garden plots using the MKS AT6101D device. The measurement duration was in the range of 1207–1801 s (the mean value = 1383 s). Samples of soil in the kitchen gardens were taken layer by layer (with a step of 5 cm) to a depth of 20 cm using a demountable cylindrical sampler. The 137Cs content in each soil layer was determined in the laboratory using a stationary semiconductor gamma spectrometer. The values of the 137Cs contamination density of the sampled soils ranged from 77 to 548 kBq/m2. It was found that the results of the ex situ analyzes of soil samples were in a good agreement with the contamination density values obtained with the in situ method. On average, the difference between two methodologies was 7% (a maximum of 20%). The results of the study confirm that the method proposed by the international group is suitable for determining the density of soil contamination by 137Cs in kitchen gardens in remote period after the Chernobyl accident.

Perkembangan publikasi internasional bidang pemantauan radiasi tahun 2011-2019 melalui basisdata Scopus

Introduction. Researchers and engineers at the National Nuclear Energy Agency need data to map research progress in the field of radiation monitoring. The purpose of the study was to find out the development of productive publications, researchers, institutions, countries, and journals that were widely cited, knowledge mapping, researcher collaboration, and Indonesian researcher publications in the field of radiation monitoring.
 Data collection method. Using the bibliometric analysis method, with a quantitative approach, population data from Scopus in 2011-2019, and mapping visualized using VOSviewer.
 Analysis Data. Analysis of the data used is evaluative descriptive.
 Results and discussions. The results of the study found the growth of publications increased by an average of 274 titles per year, comparison of publications with citing articles was 1: 3. Productive researcher, widely cited and popular Onda Y. from the University of Tsukuba, Japan, the productive institutions of the Japan Atomic Energy Agency, Japan and the most cited are the University of Tsukuba, Japan; productive and many countries become Japan's reference. The journal that mostly publishes research in the field of radiation citation monitoring is the Journal of Environmental Radioactivity, a document that is widely cited is written by Halliburton of Cleveland State University USA. Key knowledge mapping related to radiation monitoring are reactor accidents and nuclear power plants. Researchers in the field of radiation monitoring in Indonesia are inadequate, 50% are written by BATAN researchers, others collaborate with institutions from within and outside the country.
 Conclusions. Based on the results of the study shows Japan dominates as a country that has the most developing, productive and popular publications for researchers, institutions and countries as well as being a reference for other researchers in the world. The accident at Fukushima was a good experience, evaluation, knowledge and research for Japan.

137 Cs contaminations in wild-growing medicinal plants of Zhytomyr polissya forests: A 34 years after Chernobyl accident

The contamination of 137Cs in wild-growing medicinal plants was studied with regards to the species, type of forest vegetation conditions and soil specific activity of 137Cs in Zhytomyr polissya forest phytocenoses (Ukraine). The research was carried out in two plots planted in the most region typical edatopes - fresh and wet subor (Querceto-Pinetum). Species composition of phytocenoses was analyzed and the plants that can be harvested for pharmaceutical industry were identified on these test plots,. The herbal substance samples were tested to determine the specific activity of 137Cs. The studies have shown significant variability in the content of radionuclides due to differences in the level of radioactive contamination in the soil and accumulative capacity of plant species. For European blueberry, the peculiarities of 137Cs accumulation in vegetative and generative organs were studied. Comparison of the content of 137Cs in pants of different edatopes showed more higher intensity of radionuclide accumulation in wet suborbs compared to fresh suborbs. The average values of concentration factors were calculated and their rankings were built according to the intensity of 137Cs accumulation for the plants in each edatope. All studied medicinal plants were divided into four groups according to the contration factor: with weak accumulation, moderate accumulation, strong accumulation, and very strong accumulation. Based on the permissible content of 137Cs in wild-growing medicinal plants (600 Bq/kg), the maximum permissible level of soil contamination with radionuclides was determined for each medicinal plant species.

Radiometric survey in geological mapping of basement complex area of parts of Southwestern Nigeria

Radiometric methods were used to investigate the radioactive properties of rocks in parts of southwestern Nigeria with a view to interpreting the geological structure and abundance of natural radioactive elements in the main type rocks. The airborne radiometric dataset of Ikole Sheet and ground radiometric data recorded from eight traverses in Akoko axis of the study area were processed. Results presented as maps and profiles displayed variations of high and low radioactive concentrations across the area. These maps showed moderate to very high concentrations and very low to low concentrations of the radioelements; uranium (4.5-13.0 ppm); (LLD-low limit of detection -3.0 ppm), Th (25.0-70.0 ppm); (8.5-16.0 ppm) and K (2.0-4.0 %); but the most often observed values are in the range 2.5-7.0 ppm, 22.0-30.0 ppm and 3.0-4.0% for U, Th, and K respectively. High concentrations imply that the rocks are crystalline, undeformed and are rich in feldspar and U-Th bearing minerals. While low radioactivity is attributed to varying geologic framework compositions; weathered materials or fluids formed as a result of intense metamorphism. The radiometric datasets proved valuable in delineating different rock types and serve as a complementary tool in identifying geochemical zoning of rocks in the area.ReferencesAjibade A.C. and Fitches W.R., 1988. The Nigerian Precambrian and the Pan-African Orogeny, Precambrian Geology of Nigeria, 45-53.Ajibade A.C., Woakes M. and Rahaman M.A., 1987.Proterozoic crustal development in Pan-African regime of Nigeria: In A. Croner (ed.) Proterozoic Lithospheric Evolution Geodynamics, 17, 259-231.Appleton J.D., Miles J.C.H., Green B.M.R, Larmour R., 2008. Pilot study of the application of Tellus airborne radiometric and soil geochemical data for radon mapping. Journal of Environmental Radioactivity, 99, 1687-1697.Arisekola T.M. and Ajenipa R.A., 2013. Geophysical data results preliminary application to uranium and thorium exploration. IAEA-CYTED-UNECE Workshop on UNFC-2009 at Santiago, Chile 9-12, July, 12.Bayowa O.G., Olorunfemi O.M., Akinluyi O.F. and Ademilua O.L., 2014.A Preliminary Approach to Groundwater Potential Appraisal of Ekiti State, Southwestern Nigeria. International Journal of Science and Technology (IJST), 4(3), 48-58.Bierwirth P.N., 1997. The use of airborne gamma-emission data for detecting soil properties.Proceedings of the Third International Airborne Remote Sensing Conference and Exhibition.Copenhagen, Denmark.Grasty R.L. and Multala J., 1991. A correlation technique for separating natural and man-made airborne gamma-ray spectra. In: Current Research, Part D, Geological Survey of Canada, 111-116.Grasty R.L., Minty B.R.S., 1995a. A guide to the technical specifications for airborne gamma ray surveys. Australian Geological Survey Organization, Record.Grasty R.L., Minty B.R.S., 1995b. The standardization of airborne gamma-ray surveys in Australia. Exploration Geophysics, 26, 276-283.IAEA, 1991. Airborne gamma ray spectrometer surveying, International Atomic Energy Agency, Technical Report Series, 323.IAEA, 2007.International Atomic Energy Agency. Safety Glossary, Terminology used in Nuclear Safety and Radiation Protection-2007 Edition.Jones H.A. and Hockey, 1964.The Geology of part of’ Southwestern Nigeria.Geological Survey, Nigeria bulletin, 31.Kearey P., Brooks M. and Hill I., 2002. An Introduction to Geophysical Exploration.3rd ed. Oxford: Blackwell Science, 262.Milsom J., 2003. Field Geophysics: The geological field guide series, John Milsom University College, London. Published by John Wiley and Sons Ltd. Third edition, 51-70.MontajTM Tutorial, 2004. Two - Dimensional frequency domain processing of potential field data.Nigeria Geological Survey Agency (NGSA), 2009. Geological map of Nigeria prepared by Nigeria Geological Survey Agency, 31, ShetimaMangono Crescent Utako District, Garki, Abuja, Nigeria.Omosanya K.O., Ariyo S.O., Kaigama U., Mosuro G.O., and Laniyan T.A., 2015. An outcrop evidence for polycyclic orogenies in the basement complex of Southwestern Nigeria. Journal of Geography and Geology, 7(3), 24-34.Oyawoye, M.O., 1972. The Basement Complex of Nigeria.In African Geology. T.F.J. Dessauvagie and A.J. Whiteman (Eds) Ibadan University Press, 67-99.Oyinloye A.O., 2011. Geology and Geotectonic Setting of the Basement Complex Rocks in Southwestern Nigeria: Implications on Provenance and Evolution. Earth and Environmental Sciences, 98-117. ISBN: 978-953-307-468-9.Rahaman M.A., 1981. Recent Advances in the Study of the Basement Complex of Nigeria.First Symposium on the Precambrian Geology of Nigeria, Summary.Rahaman M.A., Emofureta W.O. and Vachette M., 1983. The potassic-grades of the Igbeti area: Further evaluation of the polycyclic evolution of the Pan-African Belt in South-western Nigeria. Precambrian Resources, 22, 75-92.Woakes M., Rahaman M.A., Ajibade A.C., 1987. Some Metallogenetic Features of the Nigerian Basement. Journal of African Earth Sciences, 6(5), 655-664.

DETERMINATION OF RADON CONCENTRATIONS IN DWELLING IN ACEH

Abstract. Determination of radon concentrations in dwelling in Aceh region by using a passive method has been conducted. In this research, area considered was divided into several sections called grid. Each grid represents an area of 60 km x 60 km in which, depend on public response, 6-10 passive radon monitors were installed. The number of passive radon monitors installed in Aceh is 200 units, and they can be taken back as many as 191 units or 95.50 %. The passive radon monitors have stayed in dwelling for 3-4 months and after period of the exposure, those radon monitors were taken back and brought to laboratory for further process, and then the track were read and the radon concentrations were calculated. Furthermore, data of radon concentration in dwelling and GPS location were put into MapInfo Software v.10.5 to create a map of radon concentration. The results of the analysis of the radon concentration in dwelling in Aceh demonstrate that the concentrations are in the range of 3.32 ± 0.23 Bq/m3 up to 68.30 ± 4.83 Bq/m3. This result was lower than the radon reference level determined by UNSCEAR, which was 300 Bq/m3. The data are useful in the regional extension and development plans, as well as the basis for health policy analysis due to the existence of radon in Indonesia. Furthermore, these data will become the contribution of Indonesia in the international world through UNSCEAR, IAEA and WHO. The data obtained can be used as partial data in creating a map of radon concentration in residents’ houses in Aceh, as a part of the map of radon concentration in Indonesia. Keywords: radon concentration, dwelling, Aceh, passive methodREFERENSI UNSCEAR, 1996, Natural Radiation Exposures, Forty Fifth Session, VienaIAEA, 2005, Radiation, People and the Environment, Viena.Bunawas, Emlinarti, M. Affandi, 1996, Penentuan laju lepasan radon dari bahan bangunan menggunakan metode pasip dengan metode jejak nuklir, Prosiding PPIKRL, PSPKR-BATAN, 20-21 Agustus 1996, pp. 16-21.Sutarman, L. Nirwani, Emlinarti dan A. Warsona, 2005, Penentuan konsentrasi gas radon dan thoron menggunakan detektor film LR-115 di DKI Jakarta dan sekitarnya, Prosiding PPI–PDIPTN P3TM-BATAN, Jogjakarta, p. 212-221.M. Affandi, D. Iskandar, dan Bunawas, 1996, Radon di Kompleks Perumahan BATAN, Presiding PIKRL, PSPKR-BATAN, p. 262-265Wahyudi, Kusdiana and D. Iskandar, 2016, Mapping of Indoor Radon Concentration in Houses Located in South Sulawesi Province, 2nd International Conference on the SERIR2 14th Biennial Conference of the SPERA, Bali, CTRSM-BATAN, p. 35-38.E. Pudjadi, Wahyudi, A. Warsona and Syarbaini, 2016, Measurement of Indoor Radon-Thoron Concentration in  Dwellings of Bali Island, Indonesia, 2nd International Conference on the SERIR2 14th Biennial Conference of the SPERA, Bali, CTRSM-BATAN, p. 186-192.M.H.Magalhães, et al., 2003. Radon-222 in Brazil: an outline of indoor and outdoor measurements. Journal of Environmental Radioactivity, 67(2), pp.131–143.F.S. Al-Saleh, 2007. Measurements of indoor gamma radiation and radon concentrations in dwellings of Riyadh city, Saudi Arabia. Applied Radiation and Isotopes, 65(7), pp.843–848.

An index of radioecology, what has been important?

The Journal of Environmental Radioactivity (JER) has been published for the last 20 years, an important time frame for the discipline of radioecology. Certainly the study of radioecology accelerated following the Chernobyl incident. As the discipline moves forward, there will be less emphasis on that incident, and scientists will find a new focus. Issues related to waste management and decommissioning may come to the fore. There is also a large effort world-wide to deal more quantitatively with the estimation of dose and consequences to non-human biota. All researchers in radioecology will have opinions on what topics are important now and will be important in the future. Indeed, Policy Board members and Associate Editors of JER have provided a number of Editorials in the Millennium Editorial Series with their perspectives. This paper explores the trends among papers published in JER since 1995, using the ScienceDirect on-line search capability to objectively categorize the papers and quantify the relative numbers of contributions. Obviously, this is somewhat imperfect, but it does provide an index of what has been important in radioecology, and provides some quantification to recent statements about the future of radioecology.

What's the Journal of Environmental Radioactivity up to?

What's the Journal of Environmental Radioactivity up to?

Comparison of cosmogenic radionuclide production and geomagnetic field intensity over the last 200 000 years

Restricted accessMoreSectionsView PDF ToolsAdd to favoritesDownload CitationsTrack Citations ShareShare onFacebookTwitterLinked InRedditEmail Cite this article Frank Martin 2000Comparison of cosmogenic radionuclide production and geomagnetic field intensity over the last 200 000 yearsPhil. Trans. R. Soc. A.3581089–1107http://doi.org/10.1098/rsta.2000.0575SectionRestricted accessComparison of cosmogenic radionuclide production and geomagnetic field intensity over the last 200 000 years Martin Frank Martin Frank Department of Earth Sciences, University of Oxford, Parks Road, Oxford OX1 3PR, UK Google Scholar Find this author on PubMed Search for more papers by this author Martin Frank Martin Frank Department of Earth Sciences, University of Oxford, Parks Road, Oxford OX1 3PR, UK Google Scholar Find this author on PubMed Search for more papers by this author Published:15 March 2000https://doi.org/10.1098/rsta.2000.0575AbstractThe production rate of cosmogenic radionuclides such as 10Be or 14C is known to vary as a function of the geomagnetic field intensity. It should, therefore, be possible to extract a record of palaeofield intensity from the deposition record of these radionuclides in marine or terrestrial sediments and ice cores. Field intensity variations, however, are not the only factor that has influenced the cosmogenic radionuclide records. In the case of 14C, variations of the global carbon cycle, caused by reorganization of the ocean circulation patterns from the last glacial to the present interglacial, are superimposed. 10Be is not affected by these variations because it is not part of the carbon cycle, but its deposition rates in marine sediments vary as a function of lateral sediment redistribution and boundary scavenging intensity. A global stacked record of 10Be deposition rates, corrected for sediment redistribution by normalizing to 230Thex, was shown to remove most of the disturbances, and provides a record of 10Be production rate variations over the last 200 000 years, which translates into geomagnetic field intensity variations. This dataset is compared with palaeofield intensities reconstructed from marine sediments by palaeomagnetic methods, from variations in atmospheric 14C/12C derived from independent calibrations of 14C ages, such as U/Th dating and tree ring chronology, and from 36Cl and 10Be fluxes in polar ice cores. Potential influences of the Earth's orbital parameters and insufficient correction for orbitally triggered climate variations on the palaeointensity reconstructions are assessed. It is argued that the palaeointensity records derived from marine sediments are not significantly affected by these factors. Previous ArticleNext Article VIEW FULL TEXT DOWNLOAD PDF FiguresRelatedReferencesDetailsCited by Jena P, Bhushan R, Shivam A, Nambiar R and Bharti N (2021) Production rate variation and changes in sedimentation rate of marine core dated with meteoric 10Be and 14C, Journal of Environmental Radioactivity, 10.1016/j.jenvrad.2021.106678, 237, (106678), Online publication date: 1-Oct-2021. 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Distribution of 230Th in milling wastes from the Zirovski vrh uranium mine (Slovenia), and its radioecological implications : M. Krizman, A. R. Byrne & L. Benedik, Journal of Environmental Radioactivity, 26(3), 1995, pp 223–235