Environmental Geochemistry and Health最新文献

{"title":"Soil-plant-animal properties and microbial reassembly distinguish cattle oral disease prevalence across converted Amazon pasture systems.","authors":"Fernando Igne Rocha, Ana Carolina Borsanelli, Aline Pacobahyba de Oliveira, Cecílio Viega Soares Filho, Marcia Reed Rodrigues Coelho, Stefan Schwab, Carlos Magno Dos Santos, Wenceslau Geraldes Teixeira, James Cole, Adina Howe, Iveraldo Santos Dutra, Ederson da Conceição Jesus","doi":"10.1007/s10653-026-03516-x","DOIUrl":"10.1007/s10653-026-03516-x","url":null,"abstract":"<p><p>Forest-to-pasture conversion can alter soil properties, forage composition, and microbial communities, but whether these changes are associated with bovine periodontitis remains unclear. We compared eight pasture systems in the Western Brazilian Amazon classified by high or low herd-level prevalence of periodontal lesions. Soil physicochemical properties, forage composition, microbial communities in soil, forage, and bovine subgingival biofilms, and the relative abundance of the streptomycin biosynthesis gene strB1 were evaluated. Although the systems had similar deforestation histories, low-prevalence pastures had finer-textured soils, greater soil Cu and forage Zn, and greater representation of Bacilli and Gammaproteobacteria. High-prevalence pastures had sandier soils, greater soil C:N ratios, lower micronutrient availability, and greater representation of Actinobacteria and Bacteroidetes. Microbial communities differed between prevalence classes in all three compartments, with higher alpha and gamma diversity and more compartmentalized co-occurrence networks in high-prevalence systems. Tax4Fun predicted greater representation of pathways related to carbohydrate metabolism and glycan biosynthesis in these systems, while qPCR showed higher strB1 abundance normalized to bacterial 16S rRNA gene abundance in soil and forage. These concurrent differences in soil properties, forage composition, and microbial communities were associated with bovine periodontitis prevalence. They do not demonstrate microbial transfer or causality but support the hypothesis that soil and forage conditions may influence environmental exposures related to oral microbiome dysbiosis.</p>","PeriodicalId":11759,"journal":{"name":"Environmental Geochemistry and Health","volume":"48 16","pages":""},"PeriodicalIF":4.3,"publicationDate":"2026-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13645925/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149126640","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"g-C₃N₄-based hybrid photocatalysts for removal of emerging pharmaceutical pollutants from water: recent advances, degradation pathways, toxicity assessment,and future perspectives.","authors":"Do Thi Minh Hanh, Pham Thi Thu Hoai","doi":"10.1007/s10653-026-03530-z","DOIUrl":"10.1007/s10653-026-03530-z","url":null,"abstract":"<p><p>Pharmaceutical pollutants (PPs) are increasingly detected in aquatic environments, raising concerns about their persistence and potential risks to human health and ecosystems. Advanced oxidation processes based on photocatalysis have been widely developed to remove PPs and mitigate their negative effects. Recently, the metal-free photocatalyst graphitic carbon nitride (g-C₃N₄) has received increasing attention for environmental remediation due to its good chemical stability, non-toxicity, simple synthesis, and high removal efficiency. However, the application of g-C₃N₄ is still limited by rapid charge recombination, low surface reactivity, and insufficient utilization of visible light. To improve its performance for environmental remediation, particularly for the degradation of PPs in water and wastewater, various g-C₃N₄-based hybrid photocatalysts (CN-HPs) have been developed. This review provides a critical assessment of recent advances in these hybrid photocatalytic systems for the removal of emerging pharmaceutical pollutants from aquatic environments. The findings demonstrate that CN-HPs can achieve high removal efficiencies for various pharmaceutical pollutants under laboratory conditions. Moreover, total organic carbon reduction and mineralization often require more time than the degradation process. The removal mechanisms involve superoxide radicals (•O₂^-), hydroxyl radicals (•OH), and photogenerated holes (h⁺), which break down PPs into smaller intermediates that are then further mineralized into inorganic products such as CO₂, H₂O, and inorganic ions. Toxicity assessment confirmed that the degradation of PPs using CN-HPs can produce by-products with toxicity different from that of the original compounds, and high removal efficiency alone does not indicate environmental safety. Furthermore, CN-HPs also exhibited good photocatalytic activity over repeated cycles, suggesting their potential for PPs removal from wastewater. This review also discusses the limitations and future perspectives of using CN-HPs for the removal of PPs, particularly regarding their application to real wastewater, long-term environmental safety, energy efficiency, and scale-up. In addition, we highlight the importance of combining experimental studies with artificial intelligence (AI) models to optimize treatment conditions and predict the performance of CN-HPs in removing target PPs in the field.</p>","PeriodicalId":11759,"journal":{"name":"Environmental Geochemistry and Health","volume":"48 16","pages":""},"PeriodicalIF":4.3,"publicationDate":"2026-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149105957","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Hydrothermal-assisted ZnO-NiO-WO₃-g-C₃N₄ hybrid nanocomposite for visible-light photocatalytic degradation and electrochemical detection of pyridoxine in European countries.","authors":"Wei Tang, Xian Feng Li, Qin Tang, Changwei Lu, Yan Huang","doi":"10.1007/s10653-026-03504-1","DOIUrl":"10.1007/s10653-026-03504-1","url":null,"abstract":"<p><p>A ZnO-NiO-WO₃-g-C₃N₄ ternary nanostructures were effectively prepared through a simple hydrothermal-annealing approach and systematically explored regarding its visible-light-driven photocatalytic and sensing of pyridoxine for the immune system. The nanostructures of ZnO-NiO-WO₃-g-C₃N₄ showed a high visible-light photocatalytic efficiency towards the degradation of methylene blue due to the synergistic Z-scheme/stage charge transfer, the increased reactive oxygen species generation, and the accelerated interfacial electron transfer. The nanocomposite-functionalised electrode showed exceptional nutrient-controlling pyridoxine sensing characteristics towards catechol with a broad linear detection range, high sensitivity and low detection limit. Altogether, the ternary nanostructures of ZnO-NiO-WO₃-g-C₃N₄ provide a strong multifunctional resource of environmental remediation and health safety with potential implications for economic sustainability and public policy related to environmental and public health management.</p>","PeriodicalId":11759,"journal":{"name":"Environmental Geochemistry and Health","volume":"48 15","pages":""},"PeriodicalIF":4.3,"publicationDate":"2026-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149105959","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Post-earthquake monitoring of drinking-water quality and health risk in Kahramanmaraş Province, Türkiye: a two-timepoint screening assessment.","authors":"Serdar Çetinkaya, Hacer Aydin, Mehmet Çetin, Enis Macit, Onur Erdem","doi":"10.1007/s10653-026-03517-w","DOIUrl":"10.1007/s10653-026-03517-w","url":null,"abstract":"<p><p>The February 2023 Kahramanmaraş earthquakes damaged water-supply infrastructure, but post-earthquake drinking-water quality and health risk in the epicentral region remain poorly characterized. This study assessed trace element contamination and cumulative human health risk in municipal drinking water from all 11 districts of Kahramanmaraş Province at ~ 18 (August 2024) and ~ 24 months (February 2025) post-earthquake, using ICP-MS, the Water Quality Index, deterministic/probabilistic (Monte Carlo) health risk assessment, and multivariate statistics. All concentrations remained below drinking-water guideline values (WQI = 3.1-13.4), yet substantial spatial heterogeneity was observed. Children were most vulnerable, with hazard index > 1 in up to four districts per campaign; arsenic contributed ~ 76% of cumulative non-carcinogenic risk. Deterministic carcinogenic risk exceeded the 1 × 10^-4 benchmark in 21 of 44 district-period-population combinations, consistently in Afşin, Türkoğlu, and Elbistan; these exceedances reflect the substantially higher arsenic cancer slope factor adopted in the January 2025 US EPA IRIS update (32 (mg/kg/day)^-1, versus 1.5 previously) rather than a deterioration in measured arsenic concentrations, all of which remained below the WHO/TS266 guideline value. Monte Carlo simulations identified the same districts as recurring, screening-level exceedance hotspots. These findings are consistent with the hypothesis that major earthquakes can shape drinking-water exposure patterns long after the immediate disaster period, although the absence of a pre-earthquake baseline or control area precludes direct causal attribution. This study provides the first province-wide assessment of post-earthquake drinking-water quality and health risk following the 2023 Türkiye earthquakes, underscoring the need for cumulative, probabilistic, and long-term monitoring in post-disaster water management.</p>","PeriodicalId":11759,"journal":{"name":"Environmental Geochemistry and Health","volume":"48 15","pages":""},"PeriodicalIF":4.3,"publicationDate":"2026-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149106002","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Elevated radiological hazards in a legacy coal mining area: unveiling hidden cancer risks from natural radionuclides in Enugu Iva Valley, Southeast Nigeria.","authors":"Maxwell Omeje, Soheil Sabri, James Owusu-Appiah, Derrick Gyaase, Muyiwa Michael Orosun","doi":"10.1007/s10653-026-03502-3","DOIUrl":"10.1007/s10653-026-03502-3","url":null,"abstract":"<p><p>The Okpara (Iva Valley) coal mine in Enugu State, Nigeria, represents an unmanaged legacy site where uranium- and thorium-enriched Enugu Shale waste releases radionuclides into a densely populated agricultural community through acid mine drainage (AMD) and aeolian dispersal. Certified gamma spectrometric analysis of ⁴⁰K, ²²⁶Ra, and ²³²Th was conducted on 24 environmental samples (Activation Analysis Lab (Actlabs), Ancaster, Canada and Centre for Energy Research and Training (CERT) , Ahmadu Bello University). Eight hazard indices, compliant with UNSCEAR and ICRP frameworks, were derived alongside dietary ingestion dose estimates based on cassava consumption. Spatial distribution patterns were resolved using cubic interpolation (SciPy griddata, method='cubic'). Mean activity concentrations of ²²⁶Ra (51.23 ± 11.79 Bq/kg) and ²³²Th (68.86 ± 16.45 Bq/kg) exceeded global averages by factors of 1.46 and 2.30, respectively. The mean outdoor gamma dose rate (75.64 nGy/h) exceeded the world average in 87.5% of samples. Notably, the mean annual dietary ingestion dose (2.43 mSv/yr) exceeded the ICRP public exposure limit across all samples, with ²²⁶Ra contributing 68.8% of the total dose. Statistical analysis identified ²³²Th as the highest fractional contributor to calculated outdoor dose (55% of ODRA), while ²²⁶Ra contributes more to the ingestion dose (68.8% of AED_ing) due to its higher ingestion dose conversion factor. The representative level index (Iγ > 1.0) classified 75% of samples as unsuitable for unrestricted construction, while the mean excess lifetime cancer risk (3.25 × 10^-4) exceeded global benchmarks in 66.7% of cases. Statistical analysis identified ²³²Th as the dominant contributor to outdoor dose (R² = 0.804, p < 0.0001). Spatial mapping revealed peak contamination along the AMD drainage axis in the central-eastern sector. These results identify Iva Valley as one of the highest documented doses of dietary radionuclide ingestion found at a coal mining legacy site in West Africa, according to the comparative data available at the time of writing, potentially affecting ~ 50,000 residents. Immediate interventions are required, including AMD treatment, spoil containment, agricultural restrictions, and systematic NORM monitoring aligned with international safety standards.</p>","PeriodicalId":11759,"journal":{"name":"Environmental Geochemistry and Health","volume":"48 15","pages":""},"PeriodicalIF":4.3,"publicationDate":"2026-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149105949","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 crop-specific heavy metal transfer and dietary exposure in fertilized tropical smallholder soils in Kaduna State Nigeria.","authors":"Olawale Gabriel Olowomofe, Babatope Ebenezer Faweya","doi":"10.1007/s10653-026-03521-0","DOIUrl":"10.1007/s10653-026-03521-0","url":null,"abstract":"<p><p>Fertilizer-associated heavy metals may accumulate in edible crops, yet crop-specific transfer and dietary risks remain poorly characterized in tropical smallholder systems. This study quantified Pb, Cu, Fe, Zn, Cd and Ni in paired soil and edible tissues of okra, maize and cassava from fertilized farms across five locations in Kaduna State, Nigeria. Thirty paired samples were analysed by Flame AAS, and transfer factors, multivariate statistics and dietary risk indices were used to assess metal distribution, uptake and potential exposure. Mean soil concentrations were 20.54, 42.95, 3350.00, 116.47, 0.141 and 38.41 mg kg^-1 for Pb, Cu, Fe, Zn, Cd and Ni, respectively, compared with 0.650, 15.83, 908.57, 50.07, 0.014 and 0.174 mg kg^-1 in edible tissues. Maize showed greater Pb accumulation than cassava and okra, although Pb transfer remained low across all crops. Dietary screening yielded a THQ of 2.98 for maize, exceeding the non-carcinogenic screening threshold of 1 and driven mainly by Cu and Pb, while the combined Pb + Cd carcinogenic risk was highest in maize (3.17 × 10^-5). Cassava also slightly exceeded the THQ threshold (1.07), whereas okra remained well below it (0.011). Overall, the findings identify maize and cassava as priority crops for continued monitoring of Cu and Pb in agricultural fields subject to routine fertilizer use.</p>","PeriodicalId":11759,"journal":{"name":"Environmental Geochemistry and Health","volume":"48 15","pages":""},"PeriodicalIF":4.3,"publicationDate":"2026-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149105838","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Geochemical assessment of soil and water around abandoned gold mine tailings dams: evidence from the Welkom Goldfield, South Africa.","authors":"Rinae Makhadi, Robert Hansen, Kim Dowling, Hassina Mouri","doi":"10.1007/s10653-026-03513-0","DOIUrl":"10.1007/s10653-026-03513-0","url":null,"abstract":"<p><p>Gold mining in Welkom, South Africa, has generated abandoned mine tailings containing potentially toxic elements, some located near residential and agricultural areas. This study evaluated soil and water geochemistry around abandoned tailings, emphasising ecological and human-health risks. Soil and water samples were collected near and away from abandoned mine tailings and analysed using Inductively Coupled Plasma Mass Spectrometry (ICP-MS) and Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES). Soil samples were assessed for total and leachable element concentrations. Water contamination was quantified by computing a drinking water quality index (WQI). Mean soil concentrations (mg/kg) were highest for Fe (18,425), Mn (273) and Cr (200), often highest near tailings. Uranium, detected for the first time in the area, reached 49 mg/kg. Manganese had the highest leachable concentration (15 mg/kg), while As ranged from 3 to 304 mg/kg and exceeded the Dutch (2000) and South Africa's Department of Environmental Affairs (2008) regulatory limits of 29 and 5.8 mg/kg, respectively. Contamination indices indicated low to high contamination of As, Co, Cr, Ni, Pb and U. Considerable potential ecological risks (E_rⁱ), were noted for As (630) and Pb (85). In water, As, Mn and U exceeded the WHO (2022) drinking water and South Africa's National Water Act (1998) discharge limits indicating contamination, with acidity driving mobilisation of chemical elements. High WQIs revealed that most of the water is unsuitable for drinking. These findings highlight notable mining related impacts on soil and water and further multidisciplinary research on dust, food crops and human exposure pathways are recommended.</p>","PeriodicalId":11759,"journal":{"name":"Environmental Geochemistry and Health","volume":"48 15","pages":""},"PeriodicalIF":4.3,"publicationDate":"2026-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13633954/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149105925","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multi-metal co-exposure and type 2 diabetes: integrating biomonitoring evidence, inflammatory mechanisms, and a framework for future risk stratification.","authors":"Rajat Kumar Mishra, Salona Roy, Anjali Mishra, Ved Prakash, Ravi Shekhar, Nitesh Kumar, Krishna Murti","doi":"10.1007/s10653-026-03518-9","DOIUrl":"10.1007/s10653-026-03518-9","url":null,"abstract":"<p><p>Diabetes Mellitus Type 2 prevalence is still increasing around the world, and there is growing evidence of the role of environmental co-exposures to heavy metals-cadmium, lead, arsenic, mercury, and chromium-in glycaemia impairment. Contrarily to studies on single metal toxicology, real-life situations consist in exposure to mixtures of heavy metals through environmental, occupational and dietary pathways, especially in places like the Indo-Gangetic plain of India, characterized by the presence of geological arsenic pollution in association with metals exposure. This paper provides a narrative review on the current state of art in the domain of three key issues connected to risk stratification in Type 2 Diabetes Mellitus: methods for biomonitoring metals, inflammatory and molecular pathways involved in diabetes onset and progression related to metal exposures and statistical approaches for modeling joint effects of mixtures. Firstly, discuss on the biomonitoring methods, with particular emphasis to blood, urine and hair and nail as classical matrices and new emerging matrices (saliva, buccal cells). The analytical technique (AAS vs ICP-MS) is considered as well. It will focus on the heterogeneity between different methodologies, including matrix-specific exposure window and inter-laboratory variability. Regarding mechanistic aspects, there is an agreement in scientific literature on several molecular pathways involved in glycaemia alterations, including oxidative stress, NF-κB inflammation pathway, mitochondria dysfunction, epigenetics alteration and insulin signaling impairment, with possible synergistic rather than additive action of heavy metals in the impairment of beta-cell function and insulin resistance. Finally, it discusses some recent advances in quantifying joint metal effects on diabetes through specific statistics as WQS regression and Bayesian Kernel Machine regression (BKMR) and quantile g-computation. Even though important methodological advances have been made, a translational gap remains: no validated procedure currently exists that integrates exposure metrics, inflammatory biomarkers and clinical variables for individual risk stratification. We therefore outline a research-stage framework that could guide future development of such tools.</p>","PeriodicalId":11759,"journal":{"name":"Environmental Geochemistry and Health","volume":"48 15","pages":""},"PeriodicalIF":4.3,"publicationDate":"2026-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149105920","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Distinct ecological patterns of abundant and rare prokaryotic taxa across sediment and water habitats in an acid mine drainage-impacted river system.","authors":"Yuguang Wang, Longqi Xu, Chenbing Ai, Zhu Chen, Hongbo Zhou, Haina Cheng","doi":"10.1007/s10653-026-03523-y","DOIUrl":"10.1007/s10653-026-03523-y","url":null,"abstract":"<p><p>Acid mine drainage (AMD) can lead to severe pollution of surrounding aquatic systems like rivers. Although microbial ecosystems have been documented in the AMD-impacted riverine systems, the ecological patterns and potential assembly mechanisms of abundant and rare taxa are still largely unexplored. Herein, we examined the diversity, composition, co-occurrence networks and assembly of the whole prokaryotic communities, abundant taxa, and rare taxa along an AMD-impacted river. The results revealed a strong correlation between prokaryotic communities and environmental variables in the AMD-impacted river. Significant spatial variations in diversity and composition were observed for the whole community and abundant taxa in sediment habitats, but not in water habitats. Specifically, in sediment habitats, the relative abundances of Gamma- and Beta-proteobacteria decreased along the river, while Alphaproteobacteria and Acidobacteriota increased. Conversely, water habitats were characterized by Acidovorax and Acidocella. Furthermore, the alpha diversity of rare taxa showed no significant correlation with spatial distance in either sediment or water habitats. However, rare taxa occupied important topological positions in the co-occurrence network. Stochastic processes (dispersal limitation and undominated processes) generally dominated community assembly especially for rare taxa, but the roles of deterministic processes (heterogeneous and homogeneous selection) in shaping whole communities and abundant taxa of sediment habitats should not be neglected. These findings offer novel insights into microbial patterns and assembly mechanisms in AMD-impacted riverine ecosystem.</p>","PeriodicalId":11759,"journal":{"name":"Environmental Geochemistry and Health","volume":"48 15","pages":""},"PeriodicalIF":4.3,"publicationDate":"2026-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149105914","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Environmental radiological baseline characterization of a proposed medical cyclotron facility in Indonesia using dual-detector measurements and geostatistical analysis.","authors":"Dikdik Sidik Purnama, Dani Muliawan, Muhayatun Santoso, Rian Fitriana, Eka Djatnika Nugraha, Adi Rahmansyah Amir Abdullah, Sidik Permana","doi":"10.1007/s10653-026-03505-0","DOIUrl":"10.1007/s10653-026-03505-0","url":null,"abstract":"<p><p>Establishing a robust pre-operational radiological baseline is essential for distinguishing pre-existing environmental variability from changes associated with future nuclear medicine operations. This study characterizes the ambient gamma-radiation field at a proposed medical cyclotron facility in South Cikarang, West Java, Indonesia. Nineteen monitoring locations were designated across heterogeneous terrain, with direct measurements obtained at 18 locations because Point B was unavailable. Ambient dose equivalent rates, H*(10), were measured at the ground surface and 1 m above ground level using complementary Geiger-Müller (GM) and NaI(Tl) detectors, with ten replicate measurements per configuration. Across all detector systems and measurement heights, H*(10) ranged from 0.030 to 0.120 µSv h^-1, and median surface-to-1 m reductions were 11.8% for GM and 14.2% for NaI(Tl). Inter-detector agreement was strong, with Pearson r = 0.958 at the surface and 0.919 at 1 m. Ordinary Kriging identified spatial dependence over approximately 100 m, with higher values associated with engineered sand and crushed-stone fill and lower values generally associated with natural clay-dominated and vegetated ground. Screening-level annual external dose estimates ranged from 0.052 to 0.172 mSv y^-1 and excess lifetime cancer risk from 1.76 × 10^-4 to 5.86 × 10^-4. The findings establish a site-specific pre-operational radiological baseline and demonstrate a transferable framework integrating measurement validation, uncertainty analysis, and spatial modelling for environmental surveillance around planned radiological facilities.</p>","PeriodicalId":11759,"journal":{"name":"Environmental Geochemistry and Health","volume":"48 15","pages":""},"PeriodicalIF":4.3,"publicationDate":"2026-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149105932","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}