Isotopes in Environmental and Health Studies最新文献

{"title":"Oxygen, strontium, and sulfur isotopes in modern deer bone from Virginia, USA: a model for geographic location in east coast North America.","authors":"Christine A M France, Julianne J Sarancha, Chris Stantis","doi":"10.1080/10256016.2025.2582592","DOIUrl":"10.1080/10256016.2025.2582592","url":null,"abstract":"<p><p>Understanding movements of animals and people in modern or historic contexts is hindered by limited animal tissue proxies to indicate regional origins. On North America's east coast, stable oxygen and hydrogen isoscapes provide broad latitudinal proxies, but more nuanced geographical proxies are lacking. This study examines oxygen, strontium, and sulfur isotopes in deer bone bioapatite and collagen from Virginia, USA, which reflects grazing location, to create the first robust δ³⁴S_collagen distribution in this region, contribute new ⁸⁷Sr/⁸⁶Sr_bone data to a currently small regional dataset, consider δ¹⁸O_bioapatite values on a more nuanced scale, determine which isotope systems best indicate particular regions, and especially consider the efficacy of δ³⁴S_collagen for geographic location. Random forest models show longitudinal trends in δ¹⁸O_bioapatite and ⁸⁷Sr/⁸⁶Sr_bone data; δ³⁴S_collagen values were more variable across Virginia with unique values in specific areas. Model results suggest δ¹⁸O_bioapatite values are most affected by geomorphic and meteorological controls, specifically altitude effects of the Appalachian Mountains, aridity, and mean annual temperature. The ⁸⁷Sr/⁸⁶Sr_bone ratios are controlled largely by underlying bedrock geology, allochthonous dust and sea spray deposition, and surface source mixing. The western coal-bearing formations of the Appalachian Plateau showed relatively low δ³⁴S_collagen values; the eastern Coastal Plains showed relatively high δ³⁴S_collagen resulting from dust and sea spray deposition. Modeled proxies for modern anthropogenic inputs of these elements (e.g. fossil fuels) notably were not strong controlling factors for these isotope systems; therefore, the models produced here are suitable for identification of geographic location using bone isotope values from modern, historic, or paleontological samples. Linear discriminant analysis suggests A multi-isotope approach using δ¹⁸O_bioapatite, ⁸⁷Sr/⁸⁶Sr_bone, and δ³⁴S_collagen data provides a more nuanced geographic prediction than one isotope system alone in this region. The δ³⁴S_collagen values in particular are emerging as a potential new proxy to indicate broad east-west movements of animals and people.</p>","PeriodicalId":14597,"journal":{"name":"Isotopes in Environmental and Health Studies","volume":" ","pages":"296-316"},"PeriodicalIF":1.4,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145540657","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessment of uranium levels and associated health risks in drinking water from various aquifers in northeastern Rajasthan, India.","authors":"Sunil Kumar, Sandeep Kansal, Vikas Duggal, Navish Kataria","doi":"10.1080/10256016.2025.2570360","DOIUrl":"10.1080/10256016.2025.2570360","url":null,"abstract":"<p><p>The uranium levels were investigated in 350 drinking water samples from different aquifers (alluvium, quartzite, limestone, slate, phyllite and schist, hornstone breciss, and granite) in northeastern Rajasthan, India. The LED Fluorimeter (model: LF-2a) technique was employed to determine the uranium levels in the drinking water samples. The uranium concentrations range from 0.62 to 128.63, 0.58 to 99.35, 0.79 to 54.40, 0.61 to 41.35, 2.63 to 3.30, 0.57 to 46.24, and 1.01 to 11.98 µg/L, with mean values of 15.95, 9.14, 14.90, 9.70, 2.97, 12.72, and 4.96 µg/L, respectively, for the alluvium, quartzite, limestone, slate, phyllite and schist, hornstone breciss, and granite aquifers. Uranium concentrations across the studied area varied between 0.57 and 128.63 µg/L, with an average of 13.68 µg/L. About 11.14 % of the samples surpassed the World Health Organization's recommended limit (30 µg/L). The radiation dose was calculated by considering the water intake of various age groups, and found infants received the highest calculated dose. On the radiological aspect, two groundwater samples from an alluvium aquifer exceeded the prescribed level (1.67 × 10^-4) recommended by the Atomic Energy Regulatory Board of India. The average daily dose of uranium from drinking water ranged from 0.02 to 3.68 µg/kg/day. Approximately 8.3 % of the samples from different aquifers surpassed hazard quotient values of unity and indicated chemical toxicity risks. Uranium levels showed no correlation with physicochemical parameters in all the aquifers.</p>","PeriodicalId":14597,"journal":{"name":"Isotopes in Environmental and Health Studies","volume":" ","pages":"221-238"},"PeriodicalIF":1.4,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145345141","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Geospatial trends of radon, thoron, and their progeny, and inhalation dose prediction in the diamond mining areas of Yokadouma and Mobilong, Eastern Cameroon.","authors":"Magni Gaus, Soumayah Bachirou, Takoukam Soh Serge Didier, Bineng Guillaume Samuel, Rosaline Mishra, Rama Prajith, Chutima Kranrod, Balvinder K Sapra, Saϊdou, Shinji Tokonami","doi":"10.1080/10256016.2025.2590488","DOIUrl":"10.1080/10256016.2025.2590488","url":null,"abstract":"<p><p>Radon (²²²Rn) and thoron (²²⁰Rn) with their progeny (RnP and TnP) are naturally occurring gases posing health risks when accumulated indoors. This study presents the first geostatistical mapping of indoor exposure to these radionuclides in the diamond mining regions of Yokadouma and Mobilong, eastern Cameroon. Over 101 days, activity concentrations were measured in 50 dwellings using radon - thoron discriminative detectors (RADUET) and progeny sensors (DRPS/DTPS). Data were log-linearly normalised and spatially interpolated by ordinary kriging in ArcGIS to assess long-term human and environmental impacts in radiologically enriched mining areas. Radon concentrations ranged from 12.3 to 198.7 Bq m^-³, thoron from 9.8 to 389 Bq m^-³, with progeny levels of 0.3-2.7 Bq m^-³ (RnP) and 0.2-2.1 Bq m^-³ (TnP). Estimated annual effective doses varied from 0.3 to 9.7 mSv y^-¹. Active mining sites accounted for over 50 % of RnP and TnP levels due to granite and thorium-rich bedrock. Inhalation doses averaged 5.4 ± 0.8 mSv y^-¹ in active mines, 4.8 ± 0.7 mSv y^-¹ in nearby villages, and 3.6 ± 0.5 mSv y^-¹ in Yokadouma. About 26 % of homes exceeded the ICRP's 6 mSv y^-¹ limit, mainly in poorly ventilated mining zones. Kriging and variogram modelling identified high-risk zones requiring intervention. Spatial variability correlated with building materials and ventilation. The inactive Mobilong site showed minimal influence (< 5 %). Findings emphasise mining's role in enhancing indoor radiological hazards and support targeted monitoring and mitigation policies.</p>","PeriodicalId":14597,"journal":{"name":"Isotopes in Environmental and Health Studies","volume":" ","pages":"355-384"},"PeriodicalIF":1.4,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145573651","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Radiation exposure due to radon, thoron and their progeny in different types of dwellings in two districts of Meghalaya, India.","authors":"A Pyngrope, A Saxena, B K Sahoo","doi":"10.1080/10256016.2025.2559198","DOIUrl":"10.1080/10256016.2025.2559198","url":null,"abstract":"<p><p>A survey on indoor radon, thoron and their progeny activity concentration has been carried out in two districts of Meghalaya, India, using the recently developed pin-hole dosimeter and DRPS/DTPS progeny sensors. Significant variation in these radionuclides has been observed amongst different house types and seasons of the year; responsible factors are discussed in detail. The mean observed concentration level of radon, thoron and their progeny are 63.7 ± 6, 65.1 ± 8, 24.8 ± 2 and 1.3 ± 0.1 Bq m^-3, respectively. These values are higher than the global average but lie within the prescribed limit. The estimated total annual effective dose is 2.07 mSv, which is within the permissible limit (3-10 mSv) as recommended by the International Commission on Radiological Protection (ICRP). Calculated values of radon and thoron equilibrium factors are, at par, with global findings. Positive but weak correlations between radon, thoron and their progeny concentrations have been observed.</p>","PeriodicalId":14597,"journal":{"name":"Isotopes in Environmental and Health Studies","volume":" ","pages":"385-397"},"PeriodicalIF":1.4,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145191767","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Emerging trends in nuclear medicine: breakthrough in radiopharmaceuticals, Geant4 simulations, and AI integration.","authors":"Milan Singh, D P Singh, Kailash Pandey","doi":"10.1080/10256016.2025.2584330","DOIUrl":"10.1080/10256016.2025.2584330","url":null,"abstract":"<p><p>Nuclear medicine has witnessed revolutionary progress, spurred by advances in radiopharmaceuticals, computational modeling, and artificial intelligence. These advances have not only improved cancer diagnosis and treatment but also broadened nuclear medicine's application in the treatment of cardiovascular, neurological, and infectious diseases. The current research presents an in-depth review of radiotracers, encompassing production processes, market trends, and India's strategic initiatives towards improving nuclear medicine infrastructure. Emphasis on four key isotopes, ¹³¹I, ^99mTc, ¹⁸F, and ¹¹C, featuring their changing clinical use, ranging from high-resolution imaging to targeted radiopharmaceuticals treatments. The inclusion of radiopharmaceuticals with organic-based molecules has also improved drug delivery effectiveness by providing better specificity and lower toxicity. In addition, a comprehensive review of the central role of Geant4 in simulating radiation interactions and dose distribution, highlighting its complementarity with computational human phantoms to achieve higher accuracy in radiation dosimetry, has been discussed. Moreover, the emergence of artificial intelligence-based methods in medical imaging and treatment planning has brought new avenues for automation, diagnostic accuracy, and individualized therapy, notwithstanding issues related to interpretability, data bias, and regulatory issues. The review also discusses fundamental limitations of computational modeling and artificial intelligence implementation, suggesting areas of future research. As new technologies evolve continuously to influence nuclear medicine, interdisciplinary advances are set to redefine diagnostics, enhance therapeutic success, and propel the field towards more individualized, streamlined, and accessible healthcare solutions.</p>","PeriodicalId":14597,"journal":{"name":"Isotopes in Environmental and Health Studies","volume":" ","pages":"239-295"},"PeriodicalIF":1.4,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145523505","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of different types of isotope-labelled steroids based on liquid chromatography-mass spectrometry.","authors":"Yameng Zhao, Luqi Sun, Pengshuai Zhang, Sen Xu, Shenghao Zhu, Lantao Zhang, Mingyang Hu, Jinglan Yu, Zhaocong Shang, Lin Zou, Wen Lei","doi":"10.1080/10256016.2026.2655646","DOIUrl":"https://doi.org/10.1080/10256016.2026.2655646","url":null,"abstract":"<p><p>Stable isotope-labelled reagents, as internal standards (IS), are critical for ensuring the accuracy of mass spectrometry-based quantitative analysis, and their quality directly affects the reliability of detection results. ¹³C-labelled and deuterium (D)-labelled isotopic reagents are the most commonly used, but systematic evaluation of these reagents is still lacking. In this study, four clinically representative steroids were selected to systematically compare the performance of ¹³C-labelled and D-labelled internal standard reagents. Key parameters including isotope abundance, isotopic distribution, stability, and specificity were investigated, followed by validation in real serum samples. Results showed that both ¹³C-labelled and D-labelled reagents exhibited good stability. However, ¹³C-labelled reagents outperformed D-labelled ones in isotopic distribution and specificity. With the extension of analysis time, D-labelled reagents showed a significant separation trend from their corresponding unlabelled compounds, while the retention time difference between ¹³C-labelled IS and unlabelled analyses was ≤ 0.02 min, ensuring excellent co-elution. Serum spiking recovery experiments further demonstrated that ¹³C-labelled reagents (such as ¹³C-progesterone) with superior performance in this evaluation system, especially in methods involving large panels or long analysis times, achieved higher quantitative accuracy and precision.</p>","PeriodicalId":14597,"journal":{"name":"Isotopes in Environmental and Health Studies","volume":" ","pages":"1-13"},"PeriodicalIF":1.4,"publicationDate":"2026-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148042377","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Isotope composition of groundwater and surface waters at the vicinity of abandoned mercury mine in Puerto Princesa City, The Philippines.","authors":"Jessie O Samaniego, Norman D S Mendoza, Charles Darwin T Racadio, Cris Reven L Gibaga, Alexandria M Tanciongco, Rico Neil M Quierrez, Fern Rose A Peregrino, Rachelle Clien G Reyes, John Henry C Gervasio","doi":"10.1080/10256016.2026.2673001","DOIUrl":"https://doi.org/10.1080/10256016.2026.2673001","url":null,"abstract":"<p><p>Isotopic investigation of surface water, groundwater, and precipitation in mine areas, including abandoned mines, is essential for sustainable water management. This study, investigated tritium, stable isotopes, major ions, mercury (Hg) and other potentially toxic elements (Pb, Cu, Fe, Mn, Ba) in precipitation, groundwater and surface water surrounding an abandoned Hg mine in Puerto Princesa City, Palawan Island, Philippines. Samples were collected during dry and wet seasons to determine the origin of groundwater and evaluate surface waters-groundwaters interactions. Groundwater in the mine area was characterized by magnesium-bicarbonate type, mixed magnesium-bicarbonate, and calcium chloride water types, reflecting the local geology. Average Hg concentrations in the groundwater during the dry (0.081 µg/L) and wet (0.024 µg/L) seasons were slightly higher than global background level but remained within WHO and Philippines drinking water standards. Stable isotope results showed that both groundwater and river water originated and recharged through meteoric water. Tritium concentrations in shallow and deep groundwater wells ranged from <0.40 to 0.51 TU, indicating sub-modern water. Distinct isotopic signature of lake water in the δ¹⁸O and δ²H plot suggests minimal lake water infiltration into aquifer and limited groundwater discharge into the lake system. It was further confirmed by negative mixing ratio in lake-groundwater interactions using δ¹⁸O and δ²H values in both riparian and alluvial aquifer. Isotope mixing ratio analysis revealed low river-groundwater interactions in riparian zones(16.67 and 24.24 %) but high interactions in permeable aquifers in alluvial zone (63.33 and 75.76 %), based on δ¹⁸O and δ²H values, respectively. The results suggest that contaminant transfer from river to groundwater may occur in permeable alluvial areas. Therefore, proper mine waste management, mine rehabilitation, and preservation of riparian buffer zones are necessary to minimize contaminant transport. This study demonstrates the value of isotope hydrology tools for water resource assessment and environmental management in mining areas.</p>","PeriodicalId":14597,"journal":{"name":"Isotopes in Environmental and Health Studies","volume":" ","pages":"1-23"},"PeriodicalIF":1.4,"publicationDate":"2026-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148015551","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Age-independent non-breeding isotopic niche in a migratory bird: an indirect test of the serial residency hypothesis.","authors":"Petr Procházka, Nataša Gemzová, Milica Požgayová, David X Soto, Vojtěch Brlík","doi":"10.1080/10256016.2026.2674961","DOIUrl":"https://doi.org/10.1080/10256016.2026.2674961","url":null,"abstract":"<p><p>Age-related differences in migratory behaviour and non-breeding habitat use are central to the serial residency hypothesis. This hypothesis predicts that young birds disperse more broadly during their first migration, using of a wider range of non-breeding locations and associated resources than older individuals. We tested this prediction by measuring stable carbon (<i>δ</i>¹³C) and nitrogen (<i>δ</i>¹⁵N) isotopes in feathers of young and adult Eurasian reed warblers (<i>Acrocephalus scirpaceus</i>) grown during their first and subsequent non-breeding periods to compare age-related differences in non-breeding resource use. To this end, we quantified isotopic niche breadth and overlap between age classes using kernel utilisation density methods and analyses of standard ellipses in bivariate isotopic space. Isotopic niche breadths were similar for young and adult birds and largely overlapped. In a subset of individuals sampled in two consecutive years, isotopic values indicated no systematic changes between years. Our results do not support a key prediction of the serial residency hypothesis and instead suggest that high inter-individual variability and survivorship bias may obscure age-related differences in realised isotopic niches early in life, thereby limiting the extent to which juvenile exploratory behaviour contributes to population-level niche structure. Our study illustrates the potential and the limitations of <i>δ</i>¹³C and <i>δ</i>¹⁵N for testing age-dependent variation in realised niches and points to the value of integrating additional intrinsic tracers, such as stable hydrogen (<i>δ</i>²H) and sulfur (<i>δ</i>³⁴S) isotopes, to link niche dynamics with large-scale non-breeding distributions and their implications for population resilience under environmental change.</p>","PeriodicalId":14597,"journal":{"name":"Isotopes in Environmental and Health Studies","volume":" ","pages":"1-14"},"PeriodicalIF":1.4,"publicationDate":"2026-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148005317","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Isotopic evidence of arthropod-based diet shaping feather ornamentation in saffron finches (<i>Sicalis flaveola</i>, Linnaeus 1766).","authors":"Emanuel M L Silva, Fabio J V Costa, Felipe M Gawryszewski, Gabriela B Nardoto","doi":"10.1080/10256016.2026.2665403","DOIUrl":"https://doi.org/10.1080/10256016.2026.2665403","url":null,"abstract":"<p><p>Dietary variation at the individual level plays a fundamental role in carotenoid-based ornamental plumage coloration, which often influences sexual and social signaling. This study investigated how dietary differences shape the coloration of two ornamental feather types (breast and forehead) in males of the saffron finch. This small neotropical bird is considered granivorous, although it frequently incorporates arthropods into its diet. We used reflectance-based color measurements and carbon and nitrogen stable isotopes (<i>δ</i>¹³C, <i>δ</i>¹⁵N) to infer dietary patterns and their association with color variation. A total of 29 males were sampled across seven field campaigns conducted between January 2017 and March 2018 in a farm located in the Central Brazilian savannas. <i>δ</i>¹³C values showed no association with breast or forehead coloration, indicating that variation in carbon sources was not a major driver of color expression. In contrast, <i>δ</i>¹⁵N values were significantly associated with hue variation in both feather types. Higher <i>δ</i>¹⁵N values corresponded to a yellower-shifted hue in breast feathers and red-shifted hues in forehead feathers. Taken together, these findings suggest that saffron finches may selectively forage on high-trophic level prey that are relatively rich in carotenoids and associated with improved nutritional conditions. This dietary variation may be linked to differences in carotenoid processing and allocation across feather patches, contributing to different color phenotypes. In addition, such diets are associated with the production of high-quality feathers and promote more elaborate ornamental coloration. Although <i>δ</i>¹⁵N values may also be influenced by baseline variation in nitrogen sources, the observed patterns are consistent with trophic differences and highlight the role of diet in shaping plumage coloration. Our results highlight the importance of individual dietary strategies in shaping carotenoid-based color phenotypes through both direct (carotenoid acquisition) and indirect (nutritional condition) pathways, with distinct effects across different ornamental feather regions.</p>","PeriodicalId":14597,"journal":{"name":"Isotopes in Environmental and Health Studies","volume":" ","pages":"1-13"},"PeriodicalIF":1.4,"publicationDate":"2026-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147837871","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Natural radioactivity in soil and concomitant hazards in the BSCIC Industrial Area, Jhenaidah, Bangladesh: a pioneering study.","authors":"M M Mahfuz Siraz, Md Sozol Hossain, Afroza Shelley, Mohammad Shafiqul Alam, Araf Mahmud, Md Bazlar Rashid, Mayeen Uddin Khandaker, Hamid Osman, Selina Yeasmin","doi":"10.1080/10256016.2025.2556940","DOIUrl":"10.1080/10256016.2025.2556940","url":null,"abstract":"<p><p>Soil serves as both a repository and a pathway for natural radioactivity, influencing human exposure through the transfer of radionuclides into the food-chain and atmosphere. Industrial activities can further disrupt this distribution by introducing contaminants, potentially leading to environmental accumulation. This pioneering study investigates the activity concentrations of naturally occurring radioactive materials (NORMs) and assesses radiological hazards in soil from the Bangladesh Small and Cottage Industries Corporation (BSCIC) Industrial Area in Jhenaidah, Bangladesh. Thirty soil samples were systematically collected at radial distances of 100, 400 and 800 m from the industrial center. The range of activity concentrations of ²²⁶Ra, ²³²Th, and ⁴⁰K were found to be 20 ± 2 to 35 ± 3, 23 ± 2 to 55 ± 4, and 420 ± 32 to 610 ± 51 Bq kg^-1, respectively, while the activity concentrations of certain ²²⁶Ra, most ²³²Th, and all ⁴⁰K exceed the global average values of 30, 35, and 400 Bq kg^-1, respectively. Notably, ⁴⁰K levels remain relatively consistent across the study area, whereas ²²⁶Ra and ²³²Th concentrations tend to decrease with increasing distance from the industrial site. The elevated radionuclide levels may be attributed to local geological formations rich in heavy minerals, industrial processes that redistribute these elements, and anthropogenic activities such as waste disposal and construction. Additionally, Sample 16 (23.5422849°N, 89.1951063°E) exhibited trace amount of ¹³⁷Cs (1.84 ± 0.26 Bq kg^-1), indicating possible contamination from past nuclear fallout events such as Chernobyl or Fukushima. While radium equivalent activity and hazard indices remain within safety limits, certain outdoor absorbed dose rates, external effective doses, gamma representative level indices, and excess lifetime cancer risks exceed recommended thresholds, raising concerns about potential long-term health risks. These findings underscore the need for cautious land use planning, particularly for agricultural and construction purposes. Furthermore, this study provides essential baseline data to monitor radioactivity in industrial zones before the commissioning of the Rooppur Nuclear Power Plant.</p>","PeriodicalId":14597,"journal":{"name":"Isotopes in Environmental and Health Studies","volume":" ","pages":"174-196"},"PeriodicalIF":1.4,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145238648","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}