样式: 排序: IF: - GO 导出 标记为已读
-
Applicability of self-consistent reaction field (SCRF) method to DFT estimation of hydrogen isotope separation factors in reversible processes Isotopes Environ. Health Stud. (IF 1.3) Pub Date : 2024-04-10 Satoshi Yanase, Yoshikazu Kikawada, Takao Oi
In earlier quantum chemical calculations of isotope effects, chemical species in the liquid phase were generally treated as existing in the gas phase. In recent years, however, advances in computat...
-
67Zn and 111Cd labelled green manure to determine the fate and dynamics of zinc and cadmium in soil–fertilizer–crop systems Isotopes Environ. Health Stud. (IF 1.3) Pub Date : 2024-03-15 Manja Künzli, Thilo Dürr-Auster, Christoph Bracher, Yang Zhao, Jill Bachelder, Frossard Emmanuel, Matthias Wiggenhauser
Isotope source tracing enables to accurately determine the fate of nutrients that are applied with fertilizers to soils. While this approach is well established for major nutrients such as nitrogen...
-
A protocol for distilling animal body water from biological samples and measuring oxygen and hydrogen stable isotopes via cavity ring-down spectroscopy Isotopes Environ. Health Stud. (IF 1.3) Pub Date : 2024-03-12 Zachary T. Steele, Karen Caceres, Austin D. Jameson, Michael Griego, Elizabeth J. Rogers, John P. Whiteman
The application of stable isotope analysis (SIA) to the fields of ecology and animal biology has rapidly expanded over the past three decades, particularly with regards to water analysis. SIA now p...
-
The stable isotope hydrology of Sable Island, Nova Scotia, Canada with implications for evaluating the water budget of wild horses Isotopes Environ. Health Stud. (IF 1.3) Pub Date : 2024-02-19 Geoff Koehler, Gina McNeill, Keith A. Hobson
We investigated the stable isotope hydrology of Sable Island, Nova Scotia, Canada over a five year period from September, 2017 to August, 2022. The δ2H and δ18O values of integrated monthly precipi...
-
Assessment of radioactivity level and associated radiological hazard in riverbed samples within industrial areas Isotopes Environ. Health Stud. (IF 1.3) Pub Date : 2024-02-19 Afroza Shelley, Mahmud Hasan Ovi, Mohammad Shafiqul Alam
Terrestrial gamma radiation is one of the major outdoor radiation exposures to the general public that varies substantially based on the type and geological properties of the soil. The objective of...
-
Effects of lipid extraction on stable isotope ratios of carbon and nitrogen in muscles of freshwater fish Isotopes Environ. Health Stud. (IF 1.3) Pub Date : 2024-02-14 Elena S. Ivanova, Maria A. Belova, Olga Yu. Rumiantseva, Alena A. Zudilova, Dmitry S. Kopylov, Michael Y. Borisov, Viktor T. Komov
The extraction of lipids by the Folch method from the muscles of all the fish studied led to statistically significant differences in the values of δ15N. At the same time, lipid extraction led to a...
-
Anaerobic dihydrogen consumption of nutrient-limited aquifer sediment microbial communities examined by stable isotope analysis Isotopes Environ. Health Stud. (IF 1.3) Pub Date : 2024-02-12 Michaela Löffler, Laura Schwab, Frank Dethlefsen, Louisa Lagmöller, Carsten Vogt, Hans-Hermann Richnow
The biogeochemical consequences of dihydrogen (H2) underground storage in porous aquifers are poorly understood. Here, the effects of nutrient limitations on anaerobic H2 oxidation of an aquifer mi...
-
Topographic influence on ecohydrology in volcanic watersheds of the western Pacific monsoon area: evidence from water stable isotope composition of meteoric water, thermal water, and plants Isotopes Environ. Health Stud. (IF 1.3) Pub Date : 2024-01-31 Tsung-Ren Peng, Hsiao-Fen Lee, Tsang-Sen Liu, Jun-Yi Lee, Yi-Chia Lu
In Taiwanese volcanic watersheds, we investigated stable water isotopes in meteoric water, plants, and thermal water. Meteoric water exhibited a seasonal cycle, with heavier isotopes in winter and ...
-
Effect of water deficit stress during fruit cultivation on the carbon stable isotopes of organic acids in Japanese apricots and liqueur prepared from these fruits Isotopes Environ. Health Stud. (IF 1.3) Pub Date : 2024-01-31 Fumikazu Akamatsu, Noriaki Jomura, Yasuhisa Tsuchida, Yukari Igi, Yuri Hisatsune, Satoko Teramoto, Akiko Fujita, Osamu Yamada
The objective of this study was to assess the impact of water deficit stress during fruit cultivation on the δ13C values of citric acid and malic acid in Japanese apricots at different ripeness sta...
-
Interspecific, ontogenetic and temporal variations in stable isotopes of small tuna species in the northeast Atlantic Ocean Isotopes Environ. Health Stud. (IF 1.3) Pub Date : 2024-01-31 Rubén Muñoz-Lechuga, Pedro G. Lino, Enrique González-Ortegón
In order to study the trophic level of small tuna species and their contribution to the carbon flow in pelagic food webs, an analysis of carbon and nitrogen stable isotopes was carried out. The inv...
-
Using 13C enriched acetate in isotope labelling incubation experiments: a note of caution Isotopes Environ. Health Stud. (IF 1.3) Pub Date : 2024-01-31 Frédéric Leone, Anic Imfeld, Yeganeh Mirzaei, Yves Gélinas
Vapour-phase fumigation with HCl is routinely used to remove inorganic carbon in preparation for the measurement of the concentration and δ13C value of organic carbon in a sample using elemental an...
-
Radiocarbon integrity of dissolved inorganic carbon (DIC) samples stored in plastic and glass bottles: implications for reliable groundwater age dating Isotopes Environ. Health Stud. (IF 1.3) Pub Date : 2024-01-31 David X. Soto, Luis J. Araguás-Araguás, Liang-Feng Han, Leonard I. Wassenaar
Various approaches based on the natural variations of carbon isotopes (14C and 13C) in dissolved inorganic carbon (DIC) are routinely used to study groundwater dynamics and to estimate recharge rat...
-
Radiation risk assessment of quarry pit soil as construction material in Abeokuta, Nigeria: implications for environmental and public health Isotopes Environ. Health Stud. (IF 1.3) Pub Date : 2024-01-31 Oluwaseyi A. Jegede, Morohunfoluwa A. Olaoye, Peter O. Olagbaju, Victor Makinde, Wael M. Badawy
Environmental and health risks posed by radionuclides in quarry pit soils are of great concern in environmental health monitoring. The current investigation was aimed at determining the natural rad...
-
Successful reduction of indoor radon activity concentration via cross-ventilation: experimental data and CFD simulations Isotopes Environ. Health Stud. (IF 1.3) Pub Date : 2024-01-31 Diana Altendorf, Henning Wienkenjohann, Florian Berger, Jörg Dehnert, Hannes Grünewald, Dmitri Naumov, Ralf Trabitzsch, Holger Weiß
Advanced computational fluid dynamics (CFD) simulations are essential for predicting airflow in ventilated spaces and assessing indoor air quality. In this study, a focus was set on techniques for ...
-
Origin and stability of pit lake water in Baiyinhua, Inner Mongolia, based on hydrochemistry and stable isotopes Isotopes Environ. Health Stud. (IF 1.3) Pub Date : 2024-01-25 Shengliang Pei, Deqiang Zhang, Shining Wang, Zhaodi Zhang
Isotope technology is widely used in geochemical mechanisms analysis; however, studies on the origin of pit lake water by isotopes in coal concentration areas in grassland are rare. In this study, ...
-
Chemical and C and N stable isotope compositions of three species of epiphytic Tillandsia in a Caribbean coastal zone: air pollution sources and biomonitoring implications Isotopes Environ. Health Stud. (IF 1.3) Pub Date : 2024-01-25 Yasser Morera-Gómez, Alejandro Armas-Camejo, Jesús Miguel Santamaría, Carlos Manuel Alonso-Hernández, Esther Lasheras, David Widory, David Elustondo
We characterized the elemental and C and N stable isotope compositions of Tillandsia fasciculata Sw., Tillandsia balbisiana Schult. & Schult.f. and Tillandsia recurvata (L.) L. samples collected in...
-
Assessing soil erosion in a semiarid ecosystem in Central Argentina using 137Cs and 7Be measurements Isotopes Environ. Health Stud. (IF 1.3) Pub Date : 2024-01-23 Flavia Lohaiza, Jimena Juri Ayub, Diego L. Valladares, Hugo Velasco, Marcos Rizzotto, Juan Pablo de Rosas, Ricardo Paez
Argentina is a Latin American country which encounters soil degradation problems. The most productive regions have implemented conservative land practices (no-till). However, agricultural frontier ...
-
Application of multiple stable isotopes to aid identification of the origin of regional and organic animal products in Hesse, Germany Isotopes Environ. Health Stud. (IF 1.3) Pub Date : 2023-12-12 Xenia Gatzert, Kwok P. Chun, Robert Hermanowski, Rolf Mäder, Lutz Breuer, Andreas Gattinger, Natalie Orlowski
There is an increasing global demand for regional and organic produce. However, the growth of these markets depends on consumers’ trust. Thus, novel methods must be developed to aid the verificatio...
-
Stable isotope hydrology of surface and ground waters in King George Island, Antarctica Isotopes Environ. Health Stud. (IF 1.3) Pub Date : 2023-12-12 Aurel Perșoiu, Carmen-Andreea Bădăluță, Jeonghoon Lee
The region around the tip of the Antarctic Peninsula is warming fast, a situation that will lead to widespread changes in local hydrological cycles. King George Island (KGI) hosts a complex network...
-
Measurements of natural radionuclide levels and hazards in the Lega Dembi gold mine, Oromia, Ethiopia Isotopes Environ. Health Stud. (IF 1.3) Pub Date : 2023-12-12 Gebi Tuku Yachiso, Ashok K. Chaubey, Birhanu Turi
This study aimed to evaluate natural radioactivity levels and hazards of radionuclides 232Th, 226Ra and 40K in soil samples taken from 15 locations in the Lega Dembi gold mining, Oromia, Ethiopia, ...
-
Annual effective dose estimation of radon in drinking water sources of Nizampur basin, North Western Pakistan Isotopes Environ. Health Stud. (IF 1.3) Pub Date : 2023-12-12 Jehangir Ijaz, Wajid Ali, Said Muhammad, Hayat Ullah, Danish Ather, Imran Ud Din
This study assessed radon (222Rn) levels in drinking water sources in the Nizampur basin and their potential health risks for the local community. We analyzed 48 water samples on-site using RAD7. A...
-
Isotopic history of seawater: the stable isotope character of the global ocean at present and in the geological past Isotopes Environ. Health Stud. (IF 1.3) Pub Date : 2023-12-12 Jochen Hoefs, Russell S. Harmon
After the atmosphere, the ocean is the most well-mixed and homogeneous global geochemical reservoir. Both physical and biological processes generate elemental and isotope variations in seawater. Co...
-
Using 81Kr and isotopic tracers to characterise old groundwater in the Bangkok metropolitan and vicinity areas Isotopes Environ. Health Stud. (IF 1.3) Pub Date : 2023-12-12 Kiattipong Kamdee, Jose A. Corcho Alvarado, Monthon Yongprawat, Occapasorn Occarach, Vanachawan Hunyek, Arpakorn Wongsit, Chakrit Saengkorakot, Patchareeya Chanruang, Chalermpong Polee, Nichtima Uapoonphol, Jennifer Mabry, Nicolo Romeo, Darren Hillegonds, Jake C. Zappala, Peter Mueller, Takuya Matsumoto
Krypton-81 was applied to investigate the age of groundwater in the aquifer system in the Bangkok metropolitan and vicinity areas. Stable (2H, 18O and 13C) and radioactive (3H, 85Kr and 14C) isotop...
-
Spatial and meteorological controls of stable water isotope dynamics of precipitation in Kashmir Valley, Western Himalaya, India Isotopes Environ. Health Stud. (IF 1.3) Pub Date : 2023-12-12 Altaf Lone, Ghulam Jeelani, Suhail A. Lone, Virendra Padhya, Rajendrakumar D. Deshpande, A.P. Dimri
In the Himalayas, the lives and livelihoods of millions of people are sustained by water resources primarily depending on the moisture brought by Western Disturbances and Indian Summer Monsoon. In ...
-
Measurement of plasma protein and whole body protein metabolism using [15N]glycine in a young adult man – a pilot study Isotopes Environ. Health Stud. (IF 1.3) Pub Date : 2023-12-12 Peter Junghans, Gerhard Zuz, Hans Faust
A novel simplified method is presented for the estimation of the metabolism of plasma proteins (albumin, fibrinogen, α, β and γ-globulin, glycoprotein) with regard to the whole body protein metabol...
-
Differences in δ13C and δ15N values for monarch butterflies raised on milkweeds from within and outside of crop fields: implications for inferences about natal origins Isotopes Environ. Health Stud. (IF 1.3) Pub Date : 2023-12-12 John M. Pleasants
Stable isotope (δ2H, δ13C) measurements of wing tissue have been used to determine the natal geographic origin of migrant monarch butterflies that overwinter in Mexico. This study examines the poss...
-
Characterizing wine terroir using strontium isotope ratios: a review Isotopes Environ. Health Stud. (IF 1.3) Pub Date : 2023-08-18 Bruna Saar de Almeida, Lorenzo Fedele, Massimo D’Antonio, Vincenzo Morra, Mariano Mercurio, Ross Stevenson, David Widory
This paper presents a detailed review of the use of 87Sr/86Sr isotope systematics for wine provenance studies. The method is based on the principle that the Sr isotope ratio in wine reflects that o...
-
226Ra measurement via gamma-ray spectrometry of 222Rn progeny – quantification of radon losses from sample capsules Isotopes Environ. Health Stud. (IF 1.3) Pub Date : 2023-08-11 Michael Schubert, Albrecht Paschke, Wolfram Westmeier
Radium-226 detection in sediment samples is generally executed by means of gamma-ray spectrometry. Data evaluation relies (besides the 186.2 keV 226Ra gamma peak) on the combined analysis of major ...
-
Carbon, nitrogen, and oxygen stable isotope ratios of striped dolphins and short-finned pilot whales stranded in Hokkaido, northern Japan, compared with those of other cetaceans stranded and hunted in Japan Isotopes Environ. Health Stud. (IF 1.3) Pub Date : 2023-08-07 Tetsuya Endo, Osamu Kimura, Masaru Terasaki, Shotaro Nakagun, Yoshihisa Kato, Yukiko Fujii, Koichi Haraguchi, C. Scott Baker
ABSTRACT Strandings of striped dolphins (SD) and short-finned pilot whales (PW) in Hokkaido, northern Japan, are rare but have recently increased, probably due to global warming. We quantified δ13C, δ15N, and δ18O in muscles of SD (n = 7) and PW (n = 3) stranded in Hokkaido and compared these values with those in muscles (red meat products) of hunted SD and PW in three areas of central and southern
-
Intrinsic labelling of common beans with 2H2O to enable estimates of protein digestibility Isotopes Environ. Health Stud. (IF 1.3) Pub Date : 2023-07-22 Karina Pfrimer, Roberto Botelho Ferraz Branco, Tom Preston, Márcia SV. Salles, Luiz C. Roma-Junior, Eduardo Ferriolli
ABSTRACT Background: The use of plant protein intrinsically labelled with stable isotopes provides an innovative solution to assess the efficiency of protein intake by humans. Here, the incorporation of 2H has been applied to intrinsically labelled plant protein in the common bean. This study aimed to evaluate which is the best phenological phase of seed maturation to incorporate the heavy hydrogen
-
Preventing drift of oxygen isotopes of CO2-in-air stored in glass sample flasks: new insights and recommendations Isotopes Environ. Health Stud. (IF 1.3) Pub Date : 2023-07-20 Pharahilda M. Steur, Dennis Botter, Hubertus A. Scheeren, Heiko Moossen, Michael Rothe, Harro A. J. Meijer
ABSTRACT It is known that the oxygen isotope composition of CO2-in-air, when stored over longer time periods in glass sample flasks, tends to drift to more negative values while the carbon isotope composition remains stable. The exact mechanisms behind this drift were still unclear. New experimental results reveal that water already inside the flasks during sampling plays a major role in the drift
-
Correction Isotopes Environ. Health Stud. (IF 1.3) Pub Date : 2023-06-28
Published in Isotopes in Environmental and Health Studies (Vol. 59, No. 4-6, 2023)
-
Automated rapid triple-isotope (δ15N, δ18O, δ17O) analyses of nitrate by Ti(III) reduction and N2O laser spectrometry Isotopes Environ. Health Stud. (IF 1.3) Pub Date : 2023-06-24 Leonard I. Wassenaar, Cedric Douence, Susan Fortson, Douglas S. Baer
ABSTRACT The nitrogen and oxygen (δ15N, δ18O, δ17O) stable isotopic compositions of nitrate ( NO–3NO3– ) are crucial tracers of nutrient N sources and dynamics in aquatic and atmospheric systems. Methods to reduce aqueous NO–3NO3– to N2O gas (microbial or Cd method) before 15N and 18O isotope analyses require multi-step conversion or toxic chemicals, and 17O in N2O cannot be disentangled by IRMS due
-
Regional groundwater flow system characterization of volcanic aquifers in upper Awash using multiple approaches, central Ethiopia Isotopes Environ. Health Stud. (IF 1.3) Pub Date : 2023-06-16 Kidist Hailu, Behailu Birhanu, Tilahun Azagegn, Seifu Kebede
ABSTRACT Characterization of the groundwater flow systems is important for sustainable water resource management decision-making. We have used vertical profiles of electrical conductivity (EC) and water temperature taken at 2 m intervals during drilling of 109 boreholes, and samples for stable isotope analysis (δ18O, δ2H) taken from 47 boreholes to characterize groundwater recharge, flow and discharge
-
Isotopic niches of the Northern shoveler Spatula clypeata in spring migratory stopover sites in the Marais breton, France Isotopes Environ. Health Stud. (IF 1.3) Pub Date : 2023-06-12 Axelle Moreau, Pierrick Bocher, Pascal Bonnin, Sébastien Farau, Christine Dupuy
ABSTRACT The Northern shoveler, Spatula clypeata, makes several migratory stopovers to reach its breeding site in the best conditions. These stopovers allow the species to replenish their reserves. Therefore, feeding efficiency at such sites is essential. Despite its importance, few studies have been conducted on the spring ecology of the shoveler, particularly on its diet at stopover sites. Therefore
-
The role of continental evapotranspiration on water vapour isotopic variability in the troposphere Isotopes Environ. Health Stud. (IF 1.3) Pub Date : 2023-05-21 Nimisha Singh, Rohit Pradhan, Raghavendra P. Singh, Praveen K. Gupta
ABSTRACT Rainforests play an important role in hydrological and carbon cycles, both at regional and global scales. They pump large quantities of moisture from the soil to the atmosphere and are major rainfall hotspots of the world. Satellite-observed stable water isotope ratios have played an essential role in determining sources of moisture in the atmosphere. Satellites provide information about the
-
Estimating atmospheric radon deviation using statistical coefficients: Sulaymaniyah city, Iraq, as a case of study Isotopes Environ. Health Stud. (IF 1.3) Pub Date : 2023-04-08 Adil M. Hussein, Kamal O. Abdullah, Aziz H. Fattah, Ranjdar R. Mohammed-Ali
ABSTRACT The authors studied the atmospheric radon concentration with associated meteorological parameters variation during the dust events from July to November 2017. We obtained the meteorological parameters data in weather station of Sulaymaniyah city, Iraq. In the environmental monitoring plan, the atmospheric radon fluctuated from 15 to 48 Bq m–3 around the mean value of 31.5 ± 7 Bq m–3 within
-
The first indoor radon mapping in the Campania region, Italy Isotopes Environ. Health Stud. (IF 1.3) Pub Date : 2023-03-26 Fabrizio Ambrosino, Giuseppe La Verde, Carlo Sabbarese, Vincenzo Roca, Antonio D’Onofrio, Mariagabriella Pugliese
ABSTRACT For the first time, a map of the 222Rn gas has been produced in the Campania region, the southern part of Italy, based on the activity concentration measured in indoor environments. This work is part of the radon mitigation policy and complies with the recent Italian Legislative Decree 101/2020, which implements the European Basic Safety Standards, Euratom Directive 59/2013, where Member States
-
High δ13C values in red squirrels Sciurus vulgaris explained by a reliance on conifer seeds Isotopes Environ. Health Stud. (IF 1.3) Pub Date : 2023-02-23 Tatyana N. Karmanova, Natalia Y. Feoktistova, Alexei V. Tiunov
ABSTRACT Eurasian red squirrels Sciurus vulgaris have unusually high δ13C values compared to other forest rodents, which is seemingly related to the consumption of 13C-enriched conifer seeds. To test this hypothesis, we analyzed the hair of wild and zoo-kept red squirrels, seeds of pine and spruce, and feathers of specialized and opportunistic consumers of conifer seeds, crossbills Loxia spp., and
-
A comprehensive study of the parameters affecting the stable isotopes in the precipitation of the Bangkok metropolitan area using model-based statistical approaches Isotopes Environ. Health Stud. (IF 1.3) Pub Date : 2023-02-22 Mojtaba Heydarizad, Nathsuda Pumijumnong, Masoud Minaei, Javad Eskandari Mayvan, Danial Mansourian
ABSTRACT This study determined the main local and regional parameters affecting the stable isotopes (18O, 2H) in the Bangkok precipitation and developed the Bangkok meteoric water line (BMWL) (δ2H = (7.68 ± 0.07) δ18O + (7.25 ± 0.48)). First, Pearson correlation coefficients were used to determine the correlation between local and regional parameters. Six different regression methods were used based
-
Nitrate isotopes (δ15N, δ18O) in precipitation: best practices from an international coordinated research project Isotopes Environ. Health Stud. (IF 1.3) Pub Date : 2023-02-22 Germain Esquivel-Hernández, Ioannis Matiatos, Ricardo Sánchez-Murillo, Yuliya Vystavna, Raffaella Balestrini, Naomi S. Wells, Lucilena R. Monteiro, Somporn Chantara, Wendell Walters, Leonard I. Wassenaar
ABSTRACT Stable isotope ratios of nitrogen and oxygen (15N/14N and 18O/16O) of nitrate (NO3–) are excellent tracers for developing systematic understanding of sources, conversions, and deposition of reactive atmospheric nitrogen (Nr) in the environment. Despite recent analytical advances, standardized sampling of NO3–) isotopes in precipitation is still lacking. To advance atmospheric studies on Nr
-
Behaviour of 137Cs and 210Pb inventory at three candidate reference sites for erosion study in the upstream Citarum watershed area, West Java, Indonesia Isotopes Environ. Health Stud. (IF 1.3) Pub Date : 2023-02-15 Leons Rixson, Barokah Aliyanta, Duan Wenbiao, Hadian Iman Sasmita
ABSTRACT The fallout radionuclide (FRN) analysis needs a reference site (RS) inventory to determine erosion and sedimentation in the study area. The investigated area is in the upstream Citarum watershed, West Java, Indonesia. Twenty-seven corings and 22 scrap samples have been prepared well and measured using HPGe gamma spectroscopy. The data below the minimum detectable activity (MDA) was found for
-
Determination of nitrate sources in a karst plateau reservoir based on nitrogen and oxygen isotopes Isotopes Environ. Health Stud. (IF 1.3) Pub Date : 2023-02-13 Jie Kong, Zhongfa Zhou, Yongliu Li, Xianmei Liu, Chaocheng Wen, Jiangting Xie
ABSTRACT Investigating the sources, migration and proportional contribution of nitrate is essential to effectively protect water quality. δ15N-NO3–, δ18O-NO3– and Stable Isotope Analysis in R (SIAR) were used to qualitatively and quantitatively analyse nitrate sources in the Pingzhai Reservoir water body. The values of δ15N-NO3– and δ18O-NO3– in water vary with season. Soil organic nitrogen and chemical
-
Hydrochemistry and stable isotopes revealed focused and diffuse recharge processes in the Sonora River basin, Mexico Isotopes Environ. Health Stud. (IF 1.3) Pub Date : 2023-02-08 Juan Pérez Quezadas, Yesica Guadalupe Cabrera Sillas, Rogelio Monreal, Miguel Rangel Medina, José Iván Morales Arredondo, Ricardo Sánchez-Murillo
ABSTRACT A hydro-geochemical characterization was conducted in the northern part of the Sonora River basin, covering an area of 9400 km2. Equipotential lines indicated that groundwater circulation coincided with the surface water flow direction. Based on the groundwater temperature measured (on average ∼21 °C), only one spring exhibited thermalism (51 °C). Electrical conductivity (160–1750 μS/cm),
-
In situ assessment of terrestrial gamma radiation dose and associated radiological hazards in Katsina State, Nigeria Isotopes Environ. Health Stud. (IF 1.3) Pub Date : 2023-02-03 Nuraddeen Nasiru Garba, Mukhtar Abdulkadir, Rabiu Nasiru, Muneer Aziz Saleh, Suleiman Bello, Mayeen Uddin Khandaker, Che Azurahanim Che Abdullah, Usman Musa Kankara
ABSTRACT Terrestrial gamma radiation dose (TGRD) rates were measured in situ from different locations in Katsina State, Nigeria, using a portable radiation survey metre based on geological formations and soil types. The measured TGRD rates ranged from 45 to 271 nGyh–1 with an average value of 116 ± 1 nGyh–1. Geological formation (silicified sheared rock) and soil type (lithosols and ferruginous crusts
-
New insights into diffusive kinetic fractionation during liquid condensation under supersaturated environment: an alternative approach for isotope tagging of ground-level water vapour Isotopes Environ. Health Stud. (IF 1.3) Pub Date : 2022-12-23 Akash Ganguly, Virendra Padhya, Harsh Oza, Gerhard Strauch, Rajendrakumar D. Deshpande
ABSTRACT Stable water isotopes in ground-level vapour are key to estimating water exchange between geospheres. Their sampling, however, is limited to laser-absorption spectrometers and satellite observations, having inherent shortcomings. This study investigates diffusive kinetic fractionation during liquid condensation under supersaturated environment, providing a cost-effective, reliable way of sampling
-
Nitrate isotopes reveal N-cycled waters in a spring-fed agricultural catchment Isotopes Environ. Health Stud. (IF 1.3) Pub Date : 2022-12-23 Ioannis Matiatos, Luis Araguás-Araguás, Leonard I. Wassenaar, Lucilena Rebelo Monteiro, Astrid Harjung, Cedric Douence, Martin Kralik
ABSTRACT Nitrate stable isotopes provide information about nitrate contamination and cycling by microbial processes. The Fischa-Dagnitz (Austria) spring and river system in the agricultural catchment of the Vienna basin shows minor annual variance in nitrate concentrations. We measured nitrate isotopes (δ15N, δ18O) in the source spring and river up to the confluence with the Danube River (2019–2020)
-
Combining δ13C and δ15N from bone and dentine in marine mammal palaeoecological research: insights from toothed whales Isotopes Environ. Health Stud. (IF 1.3) Pub Date : 2022-11-29 Alba Rey-Iglesia, Tess Wilson, Jennifer Routledge, Mikkel Skovrind, Eva Garde, Mads Peter Heide-Jørgensen, Paul Szpak, Eline D. Lorenzen
ABSTRACT Stable carbon (δ13C) and nitrogen (δ15N) isotopic compositions of bone and dentine collagen extracted from museum specimens have been widely used to study the paleoecology of past populations. Due to possible systematic differences in stable isotope values between bone and dentine, dentine values need to be transformed into bone-collagen equivalent using a correction factor to allow comparisons
-
A case study on seasonal and annual average indoor radon, thoron, and their progeny level in Kohima district, Nagaland, India Isotopes Environ. Health Stud. (IF 1.3) Pub Date : 2022-11-03 Supongtoshi Jamir, B.K. Sahoo, Rosaline Mishra, Dipak Sinha
ABSTRACT Indoor radon and thoron survey has been carried out in 50 dwellings under Kohima district, Nagaland, India, using the latest measurement technology. The survey has been carried out for a one-year period in 3 different seasons, and the dwellings were selected according to the building materials used for construction. Indoor radon and thoron concentrations, as well as their progeny, followed
-
Use of isotopes in examining precipitation patterns in north-central Ukraine Isotopes Environ. Health Stud. (IF 1.3) Pub Date : 2022-10-14 Elizabeth Avery, Olena Samonina, Lidiia Kryshtop, Iryna Vyshenska, Alan E. Fryar, Andrea M. Erhardt
ABSTRACT North-central Ukraine is vulnerable to temperature increases and precipitation pattern changes associated with climate change. With water management becoming increasingly important, information on current water sources and moisture recycling is critically needed. Isotope ratios of oxygen (δ18O) and hydrogen (δ2H) in precipitation are sensitive to these variables and allow comparisons across
-
Stable isotope patterns of German rivers with aspects on scales, continuity and network status Isotopes Environ. Health Stud. (IF 1.3) Pub Date : 2022-10-11 Paul Koeniger, Christine Stumpp, Axel Schmidt
ABSTRACT In Germany, river monitoring for tritium started in the early 1970s. Today this monitoring network consists of 50 stations and includes stable isotopes. The stable isotope time series to the end of 2021 are at least four years and for some stations up to 30 years long. Daily river water samples were collected during an extraordinary dry season from October 2018 until end of January 2019 from
-
Better understand past, present and future climate variability by linking water isotopes and conventional hydrometeorology: summary and recommendations from the International Atomic Energy Agency and World Meteorological Organization Isotopes Environ. Health Stud. (IF 1.3) Pub Date : 2022-10-08 Yuliya Vystavna, Johannes Cullmann, Keith Hipel, Jodie Miller, David X. Soto, Astrid Harjung, Andrew Watson, Alexandra Mattei, Seifu Kebede, Maksym Gusyev
Published in Isotopes in Environmental and Health Studies (Vol. 58, No. 4-6, 2022)
-
Stable sulphur isotope (δ34S) ratios in bird feathers from India indicate strong segregation between the Himalaya and Gangetic plain, and the rest of India Isotopes Environ. Health Stud. (IF 1.3) Pub Date : 2022-08-25 Yuvraj Date, Shreyas Managave, Girish Jathar, Rahul Khot, Keith A. Hobson
ABSTRACT Although stable hydrogen (δ2H) and carbon (δ13C) isotopic compositions of bird feathers have been increasingly used to understand the migration of birds through assignment of individuals to established isoscapes, far less is known about the structure of feather isoscapes based on stable sulphur isotope (δ34S) assays. While δ2H isoscapes have been used to investigate the migratory origins of
-
The multi-isotope biogeochemistry (S, C, N and Pb) of Hypogymnia physodes lichens: air quality approach in the Świętokrzyski National Park, Poland Isotopes Environ. Health Stud. (IF 1.3) Pub Date : 2022-08-19 Monika Maria Ciężka, Maciej Górka, Agnieszka Trzyna, Magdalena Modelska, Anna Łubek, David Widory
ABSTRACT The isotope biogeochemistry of bioindicators has widely demonstrated its added value in environmental issues by allowing to precisely identify sources of contamination. Most of the studies are based on studying one or two isotope systematics. Here, we are presenting an innovative multi-proxy approach that combines chemistry with both stable (C, S, N) and radiogenic (Pb) isotope systematics
-
Carbon and nitrogen isotopic similarity between the endangered Darwin’s fox (Lycalopex fulvipes) and sympatric free-ranging dogs in Chiloé Island, Chile Isotopes Environ. Health Stud. (IF 1.3) Pub Date : 2022-08-13 C. Canales-Cerro, E. Hidalgo-Hermoso, J. Cabello, I. Sacristán, A. Cevidanes, S. Di Cataldo, C. Napolitano, D. Moreira-Arce, S. Klarian, J. Millán
ABSTRACT Darwin’s fox is an opportunistic omnivorous predator native to Chile classified as endangered by the IUCN Red List. Habitat use by Darwin’s foxes can be negatively affected by the presence of free-ranging dogs that range freely across native and non-native habitats and can be a source of fox mortality. The objective of this study was to analyze the isotopic similarity of Darwin’s fox and sympatric
-
Soil gas radon, indoor radon and its diurnal variation in the northern region of Cameroon Isotopes Environ. Health Stud. (IF 1.3) Pub Date : 2022-07-29 Sadjo, Takoukam Soh Serge Didier, Hamadou Yerima Abba, Vaskanglang Valentin, Saïdou, Mohamadou Alidou
ABSTRACT Soil gas radon and indoor radon measurements have been carried out in Mayo-Louti and Benoué Divisions in northern Cameroon. Concentrations of radon in soil have been measured using Markus 10 at the depth of about 1 m. Radon concentration in soil varies from 0.9 to 13.8 kBq m−3 with a mean value of 4.6 kBq m−3. Average daily indoor radon concentrations measured with RadonEye+2 detectors vary
-
Assessing land use influences on isotopic variability and stream water ages in urbanising rural catchments Isotopes Environ. Health Stud. (IF 1.3) Pub Date : 2022-05-13 Jamie Lee Stevenson, Josie Geris, Christian Birkel, Doerthe Tetzlaff, Chris Soulsby
ABSTRACT Stable water isotopes are invaluable in helping understand catchment functioning and are widely used in experimental catchments, with higher frequency data becoming increasingly common. Such datasets incur substantial logistical costs, reducing their feasibility for use by decision makers needing to understand multi-catchment, landscape-scale functioning over a relatively short period to assess
-
Subterranean carbon flows from source to stygofauna: a case study on the atyid shrimp Stygiocaris stylifera (Holthuis, 1960) from Barrow Island (WA) Isotopes Environ. Health Stud. (IF 1.3) Pub Date : 2022-05-05 Mattia Saccò, William F. Humphreys, Nicholas Stevens, Matthew R. Jones, Fiona Taukulis, Erin Thomas, Alison J. Blyth
ABSTRACT Groundwater biota are crucial for the ecological functioning of subterranean ecosystems. However, while knowledge of the taxonomic diversity of groundwater invertebrates (stygofauna) is increasing, functional ecological information is still limited. Here, we investigate seldom empirically tested assumptions around stygofaunal trophic plasticity in coping with oligotrophic habitats. We focus
-
A straightforward approach for assessing the effectiveness of membrane materials as radon (222Rn) barriers Isotopes Environ. Health Stud. (IF 1.3) Pub Date : 2022-05-04 Michael Schubert, Diana Altendorf, Holger Weiß
ABSTRACT The ubiquitous presence of the radioisotope radon (222Rn) and its short-lived progeny (218Po, 214Pb, 214Bi, 214Po) is challenging in two respects: (i) Radon is a major issue regarding health-related problems due to potentially elevated radiation exposure of humans in dwellings, and (ii) due to the mobility of radon the short-lived progeny may cause complications in radionuclide detection in
-
How do precipitation events modify the stable isotope ratios in leaf water at Lhasa on the southern Tibetan Plateau? Isotopes Environ. Health Stud. (IF 1.3) Pub Date : 2022-05-03 Yong Wang, Wusheng Yu, Lun Luo, Minghui Li, Xiaoming Liu, Rong Guo, Yaoming Ma, Baiqing Xu, Guangjan Wu, Chengyi Zhao, Zhaowei Jing, Feili Wei, Jiangpeng Cui, Jingyi Zhang, Dongmei Qu
ABSTRACT Serving as a medium between source water and cellulose, leaf water contributes to the isotope ratios (δ18O, δ2H) of plant organic matter, which can be used for paleoclimate reconstruction. This study is the first to examine the diurnal variations in the δ18O and δ2H of leaf water on the southern Tibetan Plateau. The δ18O and δ2H of leaf water were relatively low when precipitation events occurred