Isotopes in Environmental and Health Studies最新文献

{"title":"Integrated MIKE SHE/MIKE+ modelling and isotopic investigations for freshwater assessment of the Suketi catchment in the Northwest Himalayas.","authors":"Abhishek Sharma, Ajay Kumar, Vijay Shankar, Praveen K Thakur","doi":"10.1080/10256016.2025.2482213","DOIUrl":"https://doi.org/10.1080/10256016.2025.2482213","url":null,"abstract":"<p><p>Reducing the unrealistic simulations of different hydrological models is necessary for precise water assessment and flood forecasting. The scarcity of observed hydro-meteorological data in mountainous catchments further hinders the model's efficiency in water evaluations. This study aims to estimate the freshwater availability via characterizing the water balance employing a distributed MIKE System Hydrological European (SHE) model for the Suketi catchment of the Beas Basin, in Himachal Pradesh, India. For this purpose, the MIKE SHE/MIKE+ based model was developed for the study area using meteorological and basin-specific data. The collected samples from the rainfall, groundwater, and stream water during 2023-2024 were analysed for stable water isotopes, i.e. δ¹⁸O and δ²H. The quantitative evaluation established the efficacy of the MIKE SHE/MIKE+ based model with root-mean-square-error, coefficient of determination, Nash-Sutcliffe efficiency, and percentage bias of 76.67, 0.88, 0.92, and -0.32, respectively. The output of the developed model was integrated with the results of a two-component mixing model through the measured values of δ¹⁸O and δ²H. The local meteoric water line (LMWL: δ²H = 8.17 · δ¹⁸O + 13.11) reveals the different climatic conditions due to lower temperatures and higher latitude of the study area vis-a-vis global average. The validated water balance of the Suketi catchment infers adequate freshwater availability in the catchment with more than 74 % as baseflow to the Suketi river and evapotranspiration accounted for 64.42 % of water loss into the atmosphere.</p>","PeriodicalId":14597,"journal":{"name":"Isotopes in Environmental and Health Studies","volume":" ","pages":"1-25"},"PeriodicalIF":1.1,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143779999","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":"Occupational exposure to NORM in gold mining areas of northwestern Sudan.","authors":"Minas E Ahmed, Modou Niang, Hamid Bounouira, Zobair El Afia, Mohamed Adam Abbo, Ndeye Arame Boye Faye","doi":"10.1080/10256016.2025.2482799","DOIUrl":"https://doi.org/10.1080/10256016.2025.2482799","url":null,"abstract":"<p><p>This study was carried out to evaluate the distribution of naturally occurring radioactive materials (NORM) and radiological hazard indices in the soil of a gold mine in northwestern Sudan using gamma ray spectrometry. The activity concentrations of ²²⁶Ra, ²³²Th and ⁴⁰K in the soil samples varies from 2.54 ± 1.70 to 50.67 ± 3.10 Bq/kg, 10.28 ± 4.20 to 39.91 ± 2.10 Bq/kg and 274.64 ± 0.98 to 1625.85 ± 54.40 Bq/kg, respectively. The average activity concentration of ⁴⁰K were found to be above the world average. The annual effective dose is 0.05 mSv/year which is lower than the 20 mSv/year recommended by the International Commission on Radiological Protection (ICRP) guidelines for occupational exposure.</p>","PeriodicalId":14597,"journal":{"name":"Isotopes in Environmental and Health Studies","volume":" ","pages":"1-9"},"PeriodicalIF":1.1,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143700232","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":"Reimagining the Kendall plot: using <i>δ</i>¹⁵N and <i>δ</i>¹⁸O of nitrate and advanced machine learning to improve N pollutant source classification.","authors":"Katarzyna Samborska-Goik, Leonard I Wassenaar","doi":"10.1080/10256016.2025.2467863","DOIUrl":"https://doi.org/10.1080/10256016.2025.2467863","url":null,"abstract":"<p><p>Nitrate (<math><msubsup><mrow><mi>NO</mi></mrow><mn>3</mn><mo>-</mo></msubsup></math>) pollution is a serious water quality issue in many countries due to contamination of lakes, rivers, and aquifers by intensive agriculture practices and inadequate wastewater management. Nitrate pollution and associated cultural eutrophication are anticipated to increase worldwide, highlighting the need to control and reduce nitrogen pollution. The stable isotope ratios of nitrate (<i>δ</i>¹⁵N, <i>δ</i>¹⁸O) are widely used as tracers of nitrogen pollution sources. The primary technique for identifying nitrate sources has been the longstanding Kendall boxplot, despite improved methods using Bayes' theorem and the R language for estimating source fractions using hydrogeochemical context, N source data and expert assessment. This article improves the classification of aqueous nitrate sources using comprehensive published stable isotope data for nitrate from four known pollutant types and applying machine learning algorithms. AI modelling results reveal improved source depictions and offer a robust statistical framework for identifying N pollution sources. This is essential given the increased published data sources and the need for better-informed water quality management strategies.</p>","PeriodicalId":14597,"journal":{"name":"Isotopes in Environmental and Health Studies","volume":" ","pages":"1-26"},"PeriodicalIF":1.1,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143692021","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":"Radiological risk assessment due to radon in bottled drinking water sold in Kahramanmaraş town, Turkiye.","authors":"Serdar Gümbür, Erdal Küçükönder","doi":"10.1080/10256016.2025.2476411","DOIUrl":"https://doi.org/10.1080/10256016.2025.2476411","url":null,"abstract":"<p><p>This research aimed to measure radon activity concentrations in bottled drinking water (BDW) samples consumed in Kahramanmaraş town, Turkiye. Also, to evaluate the health risk that may occur as a result of internal irradiation resulting from ingestion and inhalation of radon in BDW samples, the total annual effective dose equivalent (AEDE) for infants, children, and adults (1-2 y, 2-12 y, and > 17 y) and excess lifetime cancer risk (ELCR) for adults (> 17 y) had to be calculated. For these purposes, 32 water samples of different volumes belonging to 8 different commercial brands, representing a large part of the BDW consumed as drinking water and sold commercially in Kahramanmaraş were collected by purchasing from markets. Radon activity amounts of BDW samples were determined using the Durridge Rad7 detector. The average value of radon activity concentrations in BDW samples was found to be 21.21 ± 1.50 mBq/L. Radon activity concentrations ranged from 13.50 ± 1.30 to 31.70 ± 2.20 mBq/L. Estimated mean total AEDE values for infants, children, and adults (1-2 y, 2-12 y, and > 17 y) were 7.43E-05, 4.39E-05, 5.43E-05 mSv y^-1, respectively. The average ELCR value calculated for adults was calculated as 2.40E-07.</p>","PeriodicalId":14597,"journal":{"name":"Isotopes in Environmental and Health Studies","volume":" ","pages":"1-9"},"PeriodicalIF":1.1,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143615613","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":"The Bacau (Romania) phosphogypsum stacks as a source of radioactive threat: a case study.","authors":"Ana-Maria Blebea-Apostu, Mariana Claudia Gomoiu, Romul Mircea Mărgineanu, Diana Perșa, Stefan Marincea, Octavian G Duliu, Delia-Georgeta Dumitraș, Aurora-Maruta Iancu","doi":"10.1080/10256016.2024.2365684","DOIUrl":"10.1080/10256016.2024.2365684","url":null,"abstract":"<p><p>For a detailed characterization of the 5.7 10⁶ mt phosphogypsum (PG) stack in the vicinity of Bacau city, Romania, the air dose rate (ADR) was measured in 72 points covering the stack surface, while 10 samples of stack material were collected for future analysis. Radiometric determinations showed for the ADR values varying between 364 ± 53 and 489 ± 8 nSv/h, with some extreme values of 2775 ± 734 nSv/h, significantly exceeding 90 nSv/h, the average value reported for the Romanian territory. High-resolution gamma-ray spectroscopy (HRGS), performed on 10 samples collected from the entire PG stack evidenced only the presence of ²²⁶Ra as the major radioactive element with a specific activity varied between 820 ± 150 and 5278 ± 264 Bq/kg for hot spots. Further analysis performed on a similar number of samples by X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), X-ray fluorescence (XRF), scanning electron microscopy (SEM) and energy dispersive X-ray spectrometry (EDX), evidenced, beside gypsum as the main component, traces of brushite (CaHPO₄·2H₂O) and ardealite (Ca₂(PO₃OH)(SO₄)·4H₂O), as well as the presence of small acicular celestine (SrSO₄) agglomerates. XRF determinations of the mass fractions of major elements evidenced values such as SiO₂ (2.31 ± 0.73 %), TiO₂ (0.07 ± 0.01 %), Al₂O₃ (0.17 ± 0.04 %), Fe₂O₃ (0.87 ± 0.18 %), MnO (0.01 ± 0.01 %), MgO (0.17 ± 0.02 %), CaO (32.5 ± 0.82 %), Na₂O (0.04 ± 0.04 %), K₂O (0.05 ± 0.01 %), P₂O₅ (2.12 ± 0.51 %), LOI (20.2 ± 0.3 %), i.e. closer to literature reported data for PG of different provenience while the data concerning the distribution of 20 trace elements, including incompatible Sc, La, Ce, and Th were relatively closer to the upper continental crust (UCC).</p>","PeriodicalId":14597,"journal":{"name":"Isotopes in Environmental and Health Studies","volume":" ","pages":"61-75"},"PeriodicalIF":1.1,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141467916","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":"<i>Ursus spelaeus</i> (Rosenmüller, 1794) during the MIS 3: new evidence from the Cioclovina Uscată Cave and radiocarbon age overview for the Carpathians.","authors":"Ana-Voica Bojar, Natalia Piotrowska, Victor Barbu, Hans-Peter Bojar, Fatima Pawełczyk, Andrei Smeu, Ovidiu Guja","doi":"10.1080/10256016.2024.2376730","DOIUrl":"10.1080/10256016.2024.2376730","url":null,"abstract":"<p><p><i>Ursus spelaeus</i>, the Late Pleistocene a cave bear is known from numerous accumulations found in the fossil sector of caves situated in the Carpathian and Apuseni Mountains. In this study, we present new radiocarbon data along a profile of the Cioclovina Uscată Cave, which is situated in the South Carpathians. The data suggest that, during the entire Marine Isotope Stage 3 (MIS 3) interval, the cave was serving as a shelter for <i>U. spelaeus</i>, with the oldest dated bone indicating an age of > 47,710 and the youngest one, an age of 31,820 ± 400 years cal BP. Histogram plots of 110 radiocarbon data from different caves of the Carpathian and Apuseni Mountains as Cioclovina Uscată, Peștera (Cave) cu Oase, Peștera Muierii, or Peștera Urșilor, respectively, show a maximum expansion of the cave bear population between 50,000 and 40,000, a decline between 40,000 and 35,000 and a partial recovery from 35,000-30,000 years cal BP. Radiocarbon data of <i>Homo sapiens</i> remains, younger than 35,000 years cal BP, support the fact that <i>H. sapiens</i> accessed the same caves where the cave bear persisted to hibernate. Besides general cool conditions and restricted food sources, the presence of <i>H. sapiens</i> constituted an additional stress factor driving the cave bear to extinction.</p>","PeriodicalId":14597,"journal":{"name":"Isotopes in Environmental and Health Studies","volume":" ","pages":"101-113"},"PeriodicalIF":1.1,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141758782","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":"Sources and fate of dissolved sulphate, carbonate, and nitrate in groundwater of the temperate climate zone: a high-resolution multi-isotope (H, C, O, S) study in north-eastern Germany*.","authors":"Anna-Kathrina Jenner, Christoph Malik, Gerd Böttcher, Patricia Roeser, Matthias Gehre, Iris Schmiedinger, Michael Ernst Böttcher","doi":"10.1080/10256016.2025.2461474","DOIUrl":"10.1080/10256016.2025.2461474","url":null,"abstract":"<p><p>Different natural and anthropogenic drivers impact the groundwater in the catchment area of the southern Baltic Sea, north-eastern Germany. To understand the sources and fate of dissolved sulphate, carbonate, and nitrate on a regional scale, in the present study, the hydrogeochemical and multi-stable isotope (H, C, O, S) composition of groundwater samples from up to more than 300 sites (depths from near-surface down to 291 m) was studied. To investigate the element sources and the water-rock-microbe interaction processes that took place along the groundwater flow path, a mass balance approach is combined with physico-chemical modelling. Microbial oxidation of pyrite using nitrate as electron acceptor and a superimposition by dissimilatory sulphate reduction at depth is shown in a drilled vertical profile at one site. This trend frames the behaviour of sulphate at many investigated groundwater wells. Dissolved inorganic carbon (DIC) in the groundwater was found to be controlled by the uptake of biogenic carbon dioxide, the dissolution of carbonate minerals, the <i>in situ</i> oxidation of DOC and, at a few sites, the formation and/or oxidation of biogenic methane. Enhanced groundwater DIC loads may potentially increase future CO₂ degassing to the atmosphere upon release of groundwaters to the surface. These results form a comprehensive base for understanding the present situation and for future investigations.</p>","PeriodicalId":14597,"journal":{"name":"Isotopes in Environmental and Health Studies","volume":" ","pages":"20-41"},"PeriodicalIF":1.1,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143585622","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":"Monitoring of stable isotope composition of precipitation reveals thunderstorm dynamics.","authors":"Ana-Voica Bojar, Christophe Lécuyer, Hans-Peter Bojar, François Fourel, Stanislaw Chmiel","doi":"10.1080/10256016.2024.2380059","DOIUrl":"10.1080/10256016.2024.2380059","url":null,"abstract":"<p><p>The summer of 2019 is particularly well known for the famous heatwaves that swept across the European continent, with its associated drought and record-breaking air temperatures. This was followed by powerful thunderstorms, characterised by hail and heavy rain that damaged the crops on a regional scale. Here, we investigated one of the largest storm cells, lasting more than 6 h, which struck southwestern Romania. High-temporal resolution sampling of storm precipitation was performed for stable isotope measurements, rainfall and air temperature, to follow the storm dynamics. Hydrogen and oxygen isotope measurements show an abrupt decreasing temporal trend followed by superimposed V-shaped patterns interpreted as reflecting moisture replenishment by successive rain bands. To model the stable isotope values of precipitation in relation to the general trend of decreasing air temperatures, we applied a numerical Rayleigh condensation model for a non-constant α isotopic fractionation factor between liquid water and water vapour. The storm is powered by four consecutive moisture fronts, each following a Rayleigh distribution. About 40 % of the water vapour condenses during the sampled storm due to adiabatic expansion and cooling, which lowers saturation. Condensation ceases when cooling and absolute humidity can no longer sustain the dew point, stopping the rain. The timing of the event, occurring late at night and early in the morning, its duration of over 6 h as well as its synoptic scale may indicate a mesoscale convective complex.</p>","PeriodicalId":14597,"journal":{"name":"Isotopes in Environmental and Health Studies","volume":" ","pages":"4-19"},"PeriodicalIF":1.1,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141788028","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":"Unravelling the history of mountain belts through U-Pb and Lu-Hf dating of zircon and ⁴⁰Ar/³⁹Ar dating of detrital white mica: a case study from the Eastern Alps.","authors":"Franz Neubauer, Ruihong Chang, Yunpeng Dong, Johann Genser, Yongjiang Liu","doi":"10.1080/10256016.2024.2367099","DOIUrl":"10.1080/10256016.2024.2367099","url":null,"abstract":"<p><p>Radiogenic isotopes of igneous and detrital minerals from various clastic rocks of mountain belts are used to reveal tectonic and sedimentary processes, which are otherwise difficult to detect. Here, we discuss the results of U-Pb and Lu-Hf zircon systems, and ⁴⁰Ar/³⁹Ar on detrital white mica in Eastern Alps. Zircon and white mica are chemically and mechanically stable and occur in magmatic, metamorphic and sedimentary rocks. During subsequent metamorphism, zircon is resistant against high temperature, >650 °C (U-Pb) and 900 °C (Lu-Hf). The Lu-Hf zircon system is used as a tracer of initial magma separation from the mantle, and the U-Pb zircon system records magmatic crystallization. The ⁴⁰Ar/³⁹Ar white mica system is stable up to 400-450 °C dating either formation or cooling after high-grade metamorphism. Detrital U-Pb zircon ages on two major rivers draining the Eastern Alps do not record any sign of Alpine orogeny or metamorphism. Consequently, U-Pb zircon studies can entirely miss the record of collisional orogeny in cool, magma-poor collision orogens. In contrast, ⁴⁰Ar/³⁹Ar white mica ages record Early and Late Alpine metamorphism but are limited to revealing the pre-orogenic history. U-Pb zircon and ⁴⁰Ar/³⁹Ar white mica yield different information in provenance studies. In the Eastern Alps, U-Pb zircon dating of magmatic and clastic rocks indicates intense formation of magmatic rocks between 630 and 230 Ma. Felsic rocks dominate the older age groups, and increasingly young mafic rocks were dated, specifically between 265 and 230 Ma. Hf isotopes record increasing juvenile input since ∼630 Ma. Two different groups with respect to Mesoproterozoic depleted mantle ages are shown: (1) one group with a Mesoproterozoic age gap typical for Gondwana-derived units, and (2) a rare group with Mesoproterozoic ages recording a new tectonic element in the Austroalpine basement in Alps.</p>","PeriodicalId":14597,"journal":{"name":"Isotopes in Environmental and Health Studies","volume":" ","pages":"114-132"},"PeriodicalIF":1.1,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141751723","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":"Isotopes as recorders of environmental change. Special issue related to ESIR 2023 - Workshop XVI of the European Society for Isotope Research, Graz, Austria.","authors":"Ana-Voica Bojar, Andrzej Pelc, Michael Ernst Böttcher","doi":"10.1080/10256016.2025.2465449","DOIUrl":"10.1080/10256016.2025.2465449","url":null,"abstract":"","PeriodicalId":14597,"journal":{"name":"Isotopes in Environmental and Health Studies","volume":" ","pages":"1-3"},"PeriodicalIF":1.1,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143557084","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}