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Artículos de revistas sobre el tema "Stable isotopic tracing"

Autor: Grafiati

Publicado: 25 de mayo de 2024

Última modificación: 31 de julio de 2025

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1

Orlowski, N., P. Kraft, and L. Breuer. "Exploring water cycle dynamics through sampling multitude stable water isotope pools in a small developed landscape of Germany." Hydrology and Earth System Sciences Discussions 12, no. 2 (2015): 1809–53. http://dx.doi.org/10.5194/hessd-12-1809-2015.

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Abstract. Conducting a dual stable water isotope (δ2H and δ18O) study in the developed landscape of the Schwingbach catchment (Germany) helped to unravel connectivity and disconnectivity between the different water cycle components. The two-year weekly to biweekly measurements of precipitation, stream, and groundwater isotopes revealed that surface and groundwater are decoupled from the annual precipitation cycle but showed bidirectional interactions between each other. Seasonal variations based on temperature effects were observed in the precipitation signal but neither reflected in stream no

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2

Sare, David T. J., John S. Millar, and Frederick J. Longstaffe. "Tracing dietary protein in red-backed voles (Clethrionomys gapperi) using stable isotopes of nitrogen and carbon." Canadian Journal of Zoology 83, no. 5 (2005): 717–25. http://dx.doi.org/10.1139/z05-064.

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We examined the stable isotopes of nitrogen and carbon in a small mammal, the red-backed vole (Clethroinomys gapperi (Vigors, 1830)), to determine if isotope signatures reflect diet composition. Nitrogen- and carbon-isotope ratios in tissues from voles maintained on different protein levels in the laboratory were compared with wild-trapped voles. The isotopic fractionation of dietary nitrogen and carbon was also examined as food was digested in the stomach, incorporated into bone collagen, bioapatite, and hair, and excreted as feces. Nitrogen and carbon isotopes were fractionated differently d

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3

Roncone, Alberto, and Luana Bontempo. "Stable Isotope Analysis of Alcoholic Beverages: A Review." Beverages 11, no. 3 (2025): 89. https://doi.org/10.3390/beverages11030089.

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Alcoholic beverages represent a sector of significant economic and cultural importance but are also susceptible to fraud and adulteration, which can compromise their quality and authenticity. Isotopic analyses have become increasingly valuable tools for tracing the geographical origin and ensuring the quality control of products such as wine, beer, and distilled spirits. This literature review examines the main isotopic analysis techniques employed in this field, including Isotope Ratio Mass Spectrometry (IRMS) and Site-Specific Natural Isotope Fractionation by Nuclear Magnetic Resonance (SNIF

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4

Orlowski, Natalie, Philipp Kraft, Jakob Pferdmenges, and Lutz Breuer. "Exploring water cycle dynamics by sampling multiple stable water isotope pools in a developed landscape in Germany." Hydrology and Earth System Sciences 20, no. 9 (2016): 3873–94. http://dx.doi.org/10.5194/hess-20-3873-2016.

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Abstract. A dual stable water isotope (δ2H and δ18O) study was conducted in the developed (managed) landscape of the Schwingbach catchment (Germany). The 2-year weekly to biweekly measurements of precipitation, stream, and groundwater isotopes revealed that surface and groundwater are isotopically disconnected from the annual precipitation cycle but showed bidirectional interactions between each other. Apparently, snowmelt played a fundamental role for groundwater recharge explaining the observed differences to precipitation δ values. A spatially distributed snapshot sampling of soil water iso

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5

Mazariegos, Junior G., Jennifer C. Walker, Xiaomei Xu, and Claudia I. Czimczik. "Tracing Artificially Recharged Groundwater using Water and Carbon Isotopes." Radiocarbon 59, no. 2 (2016): 407–21. http://dx.doi.org/10.1017/rdc.2016.51.

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AbstractWe conducted an isotopic analysis of groundwater in Orange County, California, USA, around the Talbert Seawater Injection Barrier to determine if recycled water, used to artificially recharge local aquifers, carries a unique isotopic signature that can be used as a tracer. From September 2014 to April 2015, we collected groundwater from six privately owned wells within the coastal groundwater basin, along with various surface waters. All water samples were analyzed for their stable isotopic composition (δ18O, δD), the δ13C and 14C signature of the dissolved inorganic carbon (DIC) pool,

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6

Gulson, Brian, and Herbert Wong. "Stable Isotopic Tracing—A Way Forward for Nanotechnology." Environmental Health Perspectives 114, no. 10 (2006): 1486–88. http://dx.doi.org/10.1289/ehp.9277.

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7

Zhang, Mengnan, Xiaoqian Li, Xuxue Cheng, et al. "Isotopic Tracing of Perchlorate Sources in the Environment." Journal of Chemistry 2021 (October 18, 2021): 1–10. http://dx.doi.org/10.1155/2021/9978489.

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Perchlorate (ClO4−) is an emerging persistent pollutant that is ubiquitous in the environment at trace concentrations. Perchlorate ingestion poses a risk to human health because it interferes with thyroidal hormone production. The identification of perchlorate sources in groundwater is a primary concern. Chlorine and multi-oxygen isotopic tracing of perchlorate (δ37Cl, 36Cl/Cl, δ18O, and Δ17O) can provide a unique tool for identifying the origin and transport of perchlorate in groundwater. Along with the kinetic fractionation of chlorine and oxygen isotopes, the Δ17O value, 36Cl/Cl ratio, and

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8

McNicol, Gavin, Zhongjie Yu, Z. Carter Berry, Nathan Emery, Fiona M. Soper, and Wendy H. Yang. "Tracing plant–environment interactions from organismal to planetary scales using stable isotopes: a mini review." Emerging Topics in Life Sciences 5, no. 2 (2021): 301–16. http://dx.doi.org/10.1042/etls20200277.

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Natural isotope variation forms a mosaic of isotopically distinct pools across the biosphere and flows between pools integrate plant ecology with global biogeochemical cycling. Carbon, nitrogen, and water isotopic ratios (among others) can be measured in plant tissues, at root and foliar interfaces, and in adjacent atmospheric, water, and soil environments. Natural abundance isotopes provide ecological insight to complement and enhance biogeochemical research, such as understanding the physiological conditions during photosynthetic assimilation (e.g. water stress) or the contribution of unusua

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9

El Shami, Mohamad, Milan Savani, Lauren Gattie, et al. "TMET-28. A METHOD FOR EX VIVO STABLE ISOTOPE TRACING IN SURGICALLY EXPLANTED GLIOMA ORGANOIDS." Neuro-Oncology 24, Supplement_7 (2022): vii267—vii268. http://dx.doi.org/10.1093/neuonc/noac209.1033.

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Abstract Stable isotope tracing is a powerful method for elucidating tumor metabolism. While in vivo stable isotope tracing is one of the most faithful approaches for studying metabolic activity under pathophysiologically relevant conditions, this method is technically challenging and costly to perform. We therefore sought to optimize an ex vivo stable isotope tracing approach under conditions that recapitulate the in vivo tumor microenvironment (TME), focusing on three key features: cellular heterogeneity, nutrient availability, and oxygenation. Surgically eXplanted Organoids (SXOs) are 3-dim

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10

Banda, Limbikani C., Michael O. Rivett, Anold S. K. Zavison, Sydney Kamtukule, and Robert M. Kalin. "National Stable Isotope Baseline for Precipitation in Malawi to Underpin Integrated Water Resources Management." Water 13, no. 14 (2021): 1927. http://dx.doi.org/10.3390/w13141927.

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With the resurgence of water-isotope tracing applications for Integrated Water Resource Management in developing countries, establishing a stable isotopic baseline is necessary. Developing countries, including Malawi, continue to struggle with the generation of consistent and long-term isotopic datasets due to non-existent or inadequate in-country water-isotope capacity. Malawi has made significant advances in its quest to establish a stable isotopic baseline through the establishment of the Malawi Network of Isotope in Precipitation. This study provides the first results for the isotopic char

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11

Fiket, Željka, Martina Furdek Turk, Maja Ivanić, and Goran Kniewald. "Non-traditional stable isotope signatures in geological matrices as a tool for interpreting environmental changes – a review." Geologia Croatica 74, no. 2 (2021): 177–87. http://dx.doi.org/10.4154/gc.2021.12.

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The development of new analytical techniques enabled the precise determination of the expanded set of stable isotopes and provided new insight into existing geological issues. This review outlines recent studies of non-traditional isotope signatures in geological matrices, summarizing in one place, new data for the stable isotopes of Ca, Mg, Sr, Li, Ni, Cr, and Cu and their application in the interpretation of environmental processes. Although some, such as δ44Ca and δ26Mg, have previously been used to track changes in seawater chemistry throughout geological history, recent studies report the

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12

VICKRIDGE, I. C. "APPLICATIONS OF ION BEAM ANALYSIS TO THE ELEMENTAL AND ISOTOPIC CHARACTERISATION OF ADVANCED MATERIALS." Modern Physics Letters B 15, no. 28n29 (2001): 1271–80. http://dx.doi.org/10.1142/s0217984901003160.

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The accelerator laboratory of the Groupe de Physique des Solides, Paris, has pioneered a number of IBA techniques and applications over the last few decades. In particular, in the 1960's and 1970's, Nuclear Reaction analysis (NRA) including nuclear resonance depth profiling, isotopic tracing combined with NRA, and channelling techniques were developed under the leadership of G. Amsel. In this paper I will present a selection of recent applications from this laboratory of NRA, isotopic tracing with stable isotopes, and ion channelling, intended to illustrate the present status of these techniqu

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13

Hürkamp, Kerstin, Nadine Zentner, Anne Reckerth, et al. "Spatial and Temporal Variability of Snow Isotopic Composition on Mt. Zugspitze, Bavarian Alps, Germany." Journal of Hydrology and Hydromechanics 67, no. 1 (2019): 49–58. http://dx.doi.org/10.2478/johh-2018-0019.

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Abstract High amounts of precipitation are temporarily stored in high-alpine snow covers and play an important role for the hydrological balance. Stable isotopes of hydrogen (δ2H) and oxygen (δ18O) in water samples have been proven to be useful for tracing transport processes in snow and meltwater since their isotopic ratio alters due to fractionation. In 18 snow profiles of two snowfall seasons, the temporal and spatial variation of isotopic composition was analysed on Mt. Zugspitze. The δ18O and δ2H ranged between -26.7‰ to -9.3‰ and -193.4‰ to -62.5‰ in 2014/2015 and between -26.5‰ to -10.5

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14

Rock, L., and B. Mayer. "Tracing nitrates and sulphates in river basins using isotope techniques." Water Science and Technology 53, no. 10 (2006): 209–17. http://dx.doi.org/10.2166/wst.2006.314.

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The objective of this paper is to outline how stable isotope techniques can contribute to the elucidation of the sources and the fate of riverine nitrate and sulphate in watershed studies. The example used is the Oldman River Basin (OMRB), located in southern Alberta (Canada). Increasing sulphate concentrations and decreasing δ34S values along the flowpath of the Oldman River indicate that oxidation of pyrite in tills is a major source of riverine sulphate in the agriculturally used portion of the OMRB. Chemical and isotopic data showed that manure-derived nitrogen contributes significantly to

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15

Wang, Jiaxin, Mingjun Zhang, Athanassios A. Argiriou, et al. "Recharge and Infiltration Mechanisms of Soil Water in the Floodplain Revealed by Water-Stable Isotopes in the Upper Yellow River." Sustainability 13, no. 16 (2021): 9369. http://dx.doi.org/10.3390/su13169369.

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The stable isotopes (δD and δ18O) in soil water allow tracing of the flow and transportation of water in the soil. However, there are few studies on the use of soil water stable isotopes to explore the soil water in the floodplain, especially in determining the soil water source and infiltration mechanism. The Bayesian mixing model (MixSIAR) was integrated with the line conditioned excess (lc-excess) of stable isotopes (δD and δ18O) in precipitation, soil water (0–150 cm), river water, and groundwater to determinate the source and recharge mechanisms of two different soil profile types in the

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16

Bowen, Gabriel J., Zhongyin Cai, Richard P. Fiorella, and Annie L. Putman. "Isotopes in the Water Cycle: Regional- to Global-Scale Patterns and Applications." Annual Review of Earth and Planetary Sciences 47, no. 1 (2019): 453–79. http://dx.doi.org/10.1146/annurev-earth-053018-060220.

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Stable isotope ratios of hydrogen and oxygen have been applied to water cycle research for over 60 years. Over the past two decades, however, new data, data compilations, and quantitative methods have supported the application of isotopic data to address large-scale water cycle problems. Recent results have demonstrated the impact of climate variation on atmospheric water cycling, provided constraints on continental- to global-scale land-atmosphere water vapor fluxes, revealed biases in the sources of runoff in hydrological models, and illustrated regional patterns of water use and management

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17

Sanborn, P. T., R. P. Brockley, and B. Mayer. "Stable isotope tracing of fertilizer sulphur uptake by lodgepole pine: foliar responses." Canadian Journal of Forest Research 41, no. 3 (2011): 493–500. http://dx.doi.org/10.1139/x10-222.

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A plot-scale fertilizer sulphur (S) stable isotope tracer study was established in 2001 in the Sub-Boreal Spruce biogeoclimatic zone in central interior British Columbia where S deficiencies are common in lodgepole pine ( Pinus contorta var. latifolia Engelm. ex S. Wats.) stands. Treatments used operationally realistic applications of 300 kg N·ha–1 as urea and 100 kg S·ha–1 as either sulphate (SO4) or elemental S (S0). δ34S values of fertilizer S differed by >9‰ from pretreatment δ34S values of total S in foliage at the two study sites (5.2‰ and 8.2‰). These differences enabled quantificati

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18

Du, Kang, Beiying Zhang, and Linjuan Li. "Soil Water Dynamics Under Different Land Uses in Loess Hilly Region in China by Stable Isotopic Tracing." Water 13, no. 2 (2021): 242. http://dx.doi.org/10.3390/w13020242.

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Exploring soil water dynamics under different land use types is important for water resource management and vegetation restoration in the Loess Plateau. In this study, we investigated the hydrogen and oxygen isotopic compositions of soil water from four different land use types to explore the mechanism of soil water movement and transformation and analyse the influence of land use. The results show that the range of stable isotopes (δD and δ18O) in soil water was smaller than that in precipitation. Values for δD and δ18O in soil water showed relatively similar temporal variation, heavy isotope

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19

Torres-Cobos, Berta, Mònica Rosell, Albert Soler, et al. "A Multi-Isotopic Chemometric Approach for Tracing Hazelnut Origins." Foods 13, no. 21 (2024): 3399. http://dx.doi.org/10.3390/foods13213399.

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High-value products, such as hazelnuts, are particularly vulnerable to fraud due to their price dependence on geographical origin. Guaranteeing hazelnuts’ authenticity is essential for consumer trust and safety. Stable isotope analysis has become a reference method for origin authentication as it is reliable, robust, and easily transferable across laboratories. However, multiple isotopic markers coupled with chemometric techniques are often needed to authenticate food provenance accurately. In this study, we focused on assessing the potential of bulk δ18O, along with δ2H and δ13C of the main f

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20

Raj, Vipin T., J. A. Gayathri, R. K. Sharma та ін. "Tracing the Sources of River Waters Using Stable Isotopes (δ18O and δ2H) in Two Mountainous Watersheds, Southern Western Ghats, India". Journal of Geosciences Research 8, № 2 (2023): 89–99. http://dx.doi.org/10.56153/g19088-023-0141-34.

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Stable isotopes of oxygen (δ18O) and hydrogen (δ2H) are useful tools to characterize and monitor the hydrological processes in aquatic ecosystems.The present study uses δ18O and δ2H data from two small catchment rivers such as the east-flowing Bhavani river and the west-flowing Thuthapuzha River in southern Western Ghats to get an insight into the water cycle dynamics and sources of water.The Bhavani River drains through the semi-arid, lee-ward side of the Western Ghats and shows a markedly depleted isotopic composition as compared to the Thuthapuzha River which drains through the humid, windw

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21

Lebedeva, Liudmila. "Tracing surface and ground water with stable isotopes in a small permafrost research catchment." E3S Web of Conferences 98 (2019): 12011. http://dx.doi.org/10.1051/e3sconf/20199812011.

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The study aims at assessing groundwater contribution to the streamflow at the small permafrost Shestakovka river watershed in Central Yakutia. Water from stream, lakes, snow, rain, surface flow and suprapermafrost groundwater is characterized by specific isotopic signature. At least one third of the spring flood is formed by “old” pre-event water as showed by mixing model based on stable isotopes as tracers. Presence of talik aquifers associated with sandy hills covered by pine forest suggests that talik groundwater could be an important source of streamflow at the small river basin in continu

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22

Reutova, Nadezhda, Andrian Seleznev, Ilia Yarmoshenko, Maria Chervyakovskaya, and Maria Streletskaya. "Stable Lead Isotopic Ratios as Indicator of Urban Geochemical Processes." IOP Conference Series: Earth and Environmental Science 906, no. 1 (2021): 012098. http://dx.doi.org/10.1088/1755-1315/906/1/012098.

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Abstract The study is aimed to apply the Pb isotope fingerprinting technique for tracing pollution of urban surface deposited sediment (USDS). USDS reflect changes in the geochemical conditions occurring in the environment. USDS samples were collected in residential areas with multistory buildings in Russian cities: Magnitogorsk, Nizhny Tagil, Tyumen, Ufa, and Chelyabinsk. Elements concentrations and stable Pb isotopic ratios were measured in the samples. The reconstruction of the initial geochemical baseline (IGB) relationship between potentially harmful element (PHE) Pb and conservative lith

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23

Bugalho, M. N., P. Barcia, M. C. Caldeira, and J. O. Cerdeira. "Stable isotopes as ecological tracers: an efficient method for assessing the contribution of multiple sources to mixtures." Biogeosciences Discussions 5, no. 3 (2008): 2425–44. http://dx.doi.org/10.5194/bgd-5-2425-2008.

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Abstract. Stable isotopes are increasingly being used as tracers of ecological processes potentially providing relevant information to environmental management issues. An application of the methodology consists in relating the stable isotopic composition of a sample mixture to that of sources. The number of stable isotopes, however, is usually lower than that of potential sources existing in an ecosystem, which creates mathematical difficulties in correctly tracing sources. We discuss a linear programming model which efficiently derives information on the contribution of sources to mixtures fo

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24

Bugalho, M. N., P. Barcia, M. C. Caldeira, and J. O. Cerdeira. "Stable isotopes as ecological tracers: an efficient method for assessing the contribution of multiple sources to mixtures." Biogeosciences 5, no. 5 (2008): 1351–59. http://dx.doi.org/10.5194/bg-5-1351-2008.

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Abstract. Stable isotopes are increasingly being used as tracers of ecological processes potentially providing relevant information to environmental management issues. An application of the methodology consists in relating the stable isotopic composition of a sample mixture to that of sources. The number of stable isotopes, however, is usually lower than that of potential sources existing in an ecosystem, which creates mathematical difficulties in correctly tracing sources. We discuss a linear programming model which efficiently derives information on the contribution of sources to mixtures fo

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25

Pershin, Dmitry, Natalia Malygina, Dmitry Chernykh, Roman Biryukov, Dmitry Zolotov, and Lilia Lubenets. "Variability in Snowpack Isotopic Composition between Open and Forested Areas in the West Siberian Forest Steppe." Forests 14, no. 1 (2023): 160. http://dx.doi.org/10.3390/f14010160.

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The stable water isotopes in snow (primarily 18O and 2H) are widely used for tracing hydrological and ecological processes. However, isotopic signatures of snow can be significantly modified by topography and land cover. This study assesses spatial and temporal variability of the bulk snowpack isotopic composition (δ18O, δ2H, d-excess) between forested (pine and birch) and open areas in the West Siberian forest steppes. Isotopic samples were collected over the peak snow accumulation in 2017–2019. The snow isotopic composition within forested areas differed from open steppes, mainly in reducing

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Hobson, Keith A., Jacques Sirois, and Mark L. Gloutney. "Tracing Nutrient Allocation to Reproduction With Stable Isotopes: A Preliminary Investigation Using Colonial Waterbirds of Great Slave Lake." Auk 117, no. 3 (2000): 760–74. http://dx.doi.org/10.1093/auk/117.3.760.

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AbstractWe investigated the use of stable-isotope analysis as a direct means of tracing allocation of endogenous protein and lipid reserves to reproduction in five gulls (Larus canus, L. delawarensis, L. californicus, L. argentatus, L. philadelphia), four terns (Sterna caspia, S. hirundo, S. paradisaea, Chlidonias niger), and one jaeger (Stercorarius parasiticus) breeding on Great Slave Lake (GSL) in the Northwest Territories. Our approach was based on assumptions that (1) body tissues of birds just arriving at GSL from their assumed marine-associated wintering habitats would have stable-isoto

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Zuo, Peijie, Yuming Huang, Jianzhou Bi, et al. "Non-traditional stable isotopic analysis for source tracing of atmospheric particulate matter." TrAC Trends in Analytical Chemistry 158 (January 2023): 116866. http://dx.doi.org/10.1016/j.trac.2022.116866.

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Ye, Risheng, Jingxin Zhao, Zhiyi Wang, Weiyong Li, Jun He, and Fukun Chen. "Single-Grain Detrital Apatite Sr Isotopic Composition as an Indicator to Trace Sedimentary Sources: A Case Study of Sedimentary Rocks in the Hui-Cheng Basin, South Qinling, China." Minerals 13, no. 8 (2023): 1010. http://dx.doi.org/10.3390/min13081010.

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Sediments or clastic rocks can record the evolution history of basins, orogenic processes, crustal uplift and erosion, and even paleo-environments. Detrital minerals such as zircon, garnet, and apatite are useful media for studies of sedimentary sources and basin evolution. Detrital zircon has been widely taken as an indicator for provenances and tectonic evolution of geological terrenes via age distribution patterns. Apatite can remain stable during erosion and transportation and is also considered as an ideal object for source tracing. This mineral normally contains high Sr and negligible Rb

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Kusch, S., Y. Kashiyama, N. O. Ogawa та ін. "Implications for chloro- and pheopigment synthesis and preservation from combined compound-specific δ<sup>13</sup>C, δ<sup>15</sup>N, and Δ<sup>14</sup>C analysis". Biogeosciences 7, № 12 (2010): 4105–18. http://dx.doi.org/10.5194/bg-7-4105-2010.

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Abstract. Chloropigments and their derivative pheopigments preserved in sediments can directly be linked to photosynthesis. Their carbon and nitrogen stable isotopic compositions have been shown to be a good recorder of recent and past surface ocean environmental conditions tracing the carbon and nitrogen sources and dominant assimilation processes of the phytoplanktonic community. In this study we report results from combined compound-specific radiocarbon and stable carbon and nitrogen isotope analysis to examine the time-scales of synthesis and fate of chlorophyll-a and its degradation produ

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Chen, Fenli, Mingjun Zhang, Athanassios A. Argiriou, Shengjie Wang, Xin Zhou, and Xueyuan Liu. "Deuterium Excess in Precipitation Reveals Water Vapor Source in the Monsoon Margin Sites in Northwest China." Water 12, no. 12 (2020): 3315. http://dx.doi.org/10.3390/w12123315.

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The deuterium excess (d) in precipitation, determined by the stable hydrogen and oxygen isotopes (δ2H and δ18O), is a widely applied parameter in tracing the water vapor source. Based on the multiple-year observations of stable water isotopes in precipitation at four stations in the Lanzhou city, Northwest China, we analyzed the variations in deuterium excess in precipitation at the Asian monsoon margin region. The mean value of deuterium excess at the study region is 11.0‰ in the dry season and 8.0‰ in the wet season. The d value in precipitation negatively correlates with air temperature and

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31

Svetlíková, Petra, Petr Blažek, Radka Mühlsteinová, and Jakub Tešitel. "Tracing nitrogen flow in a root-hemiparasitic association by foliar stable-isotope labelling." Plant Ecology and Evolution 149, no. (1) (2016): 39–44. https://doi.org/10.5091/plecevo.2016.1112.

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<b>Background and aims</b> – The resource flows in the host-hemiparasite association have been frequently studied by applying stable isotope techniques. However, these methods of artificial labelling required sophisticated equipment preventing their application to field experiments. Here, we aimed to test the applicability of the <sup>15</sup> N <sup>13</sup> C-urea foliar brushing method in tracing the resource flows between a root hemiparasite, <i>Rhinanthus major</i>, and a host, <i>Triticum aestivum</i>. In addition, the dynamics of the label movement was examined in order to provide

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32

Guo, Jing-Liang, Zaicong Wang, Wen Zhang, et al. "Significant Zr isotope variations in single zircon grains recording magma evolution history." Proceedings of the National Academy of Sciences 117, no. 35 (2020): 21125–31. http://dx.doi.org/10.1073/pnas.2002053117.

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Zircons widely occur in magmatic rocks and often display internal zonation finely recording the magmatic history. Here, we presented in situ high-precision (2SD <0.15‰ for δ94Zr) and high–spatial-resolution (20 µm) stable Zr isotope compositions of magmatic zircons in a suite of calc-alkaline plutonic rocks from the juvenile part of the Gangdese arc, southern Tibet. These zircon grains are internally zoned with Zr isotopically light cores and increasingly heavier rims. Our data suggest the preferential incorporation of lighter Zr isotopes in zircon from the melt, which would drive the resid

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Saiki, Makoto, Thu Nga Do, Thuy Hai Cao Thi, Takashi Nakamura, Thao Ta Thi, and Kei Nishida. "Temporal variation of stable isotopic values for dissolved nitrogen compounds in paddy water environment." Nuclear Science and Technology 9, no. 3 (2019): 42–47. http://dx.doi.org/10.53747/jnst.v9i3.44.

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Vietnam is the second-largest rice exporter worldwide and the amount of applied fertilizer is increasing rapidly in recent years. Overuse of chemical fertilizers in the paddy fields strongly contributes to the pollution of water bodies. This study aimed to understand the temporal variation of nitrogen concentrations and stable isotope values as environmental tracers based on the observed data in a selected paddy field in Vietnam, which provides basic and useful clues for tracing sources and identifying processes of nitrogen. The results from the field survey showed that , in accordance withthe

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Tian, Lijun, Yongli Gao, Guang Yang, et al. "Isotopic tracers of sources of water for springs from the Edwards Aquifer, Central Texas, USA." Hydrology Research 52, no. 3 (2021): 787–803. http://dx.doi.org/10.2166/nh.2021.011.

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Abstract The Edwards Aquifer (EA) in Central Texas provides water supply for over two million people and contains springs that are hydrologically and ecologically important to the region. The residence time of groundwater in the EA ranges from a few days to many thousands of years, since water in the aquifer is contained and transported within both matrix porosity and large conduits. In this study, stable isotopes of water from five springs are investigated for tracing the origin of water and hydrological processes in the EA system during 2017–2019. There is a quick response of the isotopic si

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Wang, Jishi, Tianjin Chen, Weixing Zhang, Yan Zhao, Shuming Yang, and Ailiang Chen. "Tracing the geographical origin of rice by stable isotopic analyses combined with chemometrics." Food Chemistry 313 (May 2020): 126093. http://dx.doi.org/10.1016/j.foodchem.2019.126093.

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Chen, Long, Purna Kumar Khatri, Mauro Paolini та ін. "Authentic Aroma and Compound-Specific Isotope Ratios (δ13C, δ2H) Profiles of Vanilla Pods (V. planifolia and V. tahitensis)". Molecules 30, № 4 (2025): 825. https://doi.org/10.3390/molecules30040825.

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Stable isotope ratio analysis of carbon (δ13C) and hydrogen (δ2H) in vanillin has become a valuable tool for differentiating natural vanilla from synthetic or biosynthetic alternatives and for tracing its geographical origins. However, increasingly sophisticated fraud techniques necessitate ongoing refinement of analytical methods to ensure accurate detection. This study advanced the field by investigating minor volatile organic compounds as potential biomarkers for identifying botanical and geographical origins of vanilla products. Vanilla pods from the two main vanilla species, V. planifolia

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Boljat, Ivana, Josip Terzić, Željko Duić, Jasmina Lukač Reberski, Ana Selak, and Maja Briški. "Tracing Hydrological Processes: Insights from Hydrochemical and Isotopic Investigations in the Northern Part of Croatian Dinaric Karst." Geologia Croatica 77, no. 2 (2024): 127–44. http://dx.doi.org/10.4154/gc.2024.09.

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This study presents the findings derived from a three-year monitoring programme focusing on the hydrochemical composition and stable isotope signatures (δ18O, δ2H) within the vulnerable karst groundwater system in Croatia's northern Dinaric karst region. Covering an area of 1980 km2 across Kapela Mountain and its foothills, this groundwater system falls within the Kupa River basin and encompasses the catchment areas of the main springs across two spring levels of the Dobra, Mrežnica, and Slunjčica Rivers (namely the Vitunj, Zagorska Mrežnica, Dretulja, Veliko Vrelo, Gojak, Tounjčica, Mrežnica,

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Zhou, Jiaxin, Jinkui Wu, Shiwei Liu, et al. "Hydrograph Separation in the Headwaters of the Shule River Basin: Combining Water Chemistry and Stable Isotopes." Advances in Meteorology 2015 (2015): 1–10. http://dx.doi.org/10.1155/2015/830306.

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The runoff components were identified in the headwater area of Shule River Basin, using isotopic and chemical tracing with particular focus on the temporal variations of catchment sources. A total of 95 samples, including precipitation, groundwater, and glacial meltwater, were collected and analyzed for stable water isotopes (18O and2H) and major chemical ion parameters (potassium, sodium, calcium, magnesium, sulfate, chloride, and bicarbonate). Based on the isotope and water chemistry data, we applied end member mixing analysis (EMMA) to identify and quantify the major runoff generating sourc

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Kusch, S., Y. Kashiyama, N. O. Ogawa та ін. "Implications for chloro- and pheopigment synthesis and preservation from combined compound-specific δ<sup>13</sup>C, δ<sup>15</sup>N, and Δ<sup>14</sup>C analysis". Biogeosciences Discussions 7, № 4 (2010): 6265–94. http://dx.doi.org/10.5194/bgd-7-6265-2010.

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Abstract. Chloropigments and their derivative pheopigments preserved in sediments can directly be linked to photosynthesis. Their carbon and nitrogen stable isotopic compositions have been shown to be a good recorder of recent and past surface ocean environmental conditions tracing the carbon and nitrogen sources and dominant assimilation processes of the phytoplanktonic community. In this study we report results from combined compound-specific radiocarbon and stable carbon and nitrogen isotopic analysis to examine the timescales of synthesis and fate of chlorophyll-a and its degradation produ

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Kong, Jie, Zhongfa Zhou, Rukai Xie, and Weitang Cao. "Tracing the source and behaviour of sulphate in karst reservoirs, using stable isotopes and Bayesian isotopic-mixing models." Science of The Total Environment 958 (January 2025): 177994. https://doi.org/10.1016/j.scitotenv.2024.177994.

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41

Kiss, Gabriella B., Kata Molnár, Zsolt Benkó, et al. "Tracing the Source of Hydrothermal Fluid in Ophiolite-Related Volcanogenic Massive Sulfide Deposits: A Case Study from the Italian Northern Apennines." Minerals 13, no. 1 (2022): 8. http://dx.doi.org/10.3390/min13010008.

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The Italian Northern Apennines contain several Fe-Cu-Zn-bearing, Cyprus-type volcanogenic massive sulfide (VMS) deposits, which significantly contribute to the Cu resources of Italy. The massive sulfide lenses and related stockwork mineralizations are hosted by several levels (from basalt to serpentinite) of the unmetamorphosed ophiolitic series; therefore, this region offers perfect locations to study the ore-forming hydrothermal system in detail. A combination of fluid inclusion microthermometry, Raman spectroscopy, electron probe analyses (chlorite thermometry) and stable and noble gas isot

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Yang, Yifan, Xiang Zhang, Chao Wang, Lei Chen, Jinhan Cai, and Jingyi Wang. "Hydrochemistry and Stable Isotopes for the Investigation of Water Movement in Bioretention Column Experiments." Water 16, no. 12 (2024): 1636. http://dx.doi.org/10.3390/w16121636.

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Bioretention can be an efficient measure of stormwater treatment. The bioretention system has been globally adapted for controlling rainfall-runoff volume and removing pollutants. However, there is a lack of systematic analysis of some hydrological processes in the bioretention facility, such as the transportation of rainfall-runoff (event water) and soil water (pre-event water). This research uniquely applied stable isotope tracing to a bioretention system to investigate the transport of rainfall-runoff and the movement of soil water in a bioretention column. The stable isotope tracing method

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Lerch, Thomas Z., Marie-France Dignac, Enrique Barriuso, and André Mariotti. "Effect of Glucose on the Fatty Acid Composition of Cupriavidus necator JMP134 during 2,4-Dichlorophenoxyacetic Acid Degradation: Implications for Lipid-Based Stable Isotope Probing Methods." Applied and Environmental Microbiology 77, no. 20 (2011): 7296–306. http://dx.doi.org/10.1128/aem.06438-11.

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ABSTRACTCombining lipid biomarker profiling with stable isotope probing (SIP) is a powerful technique for studying specific microbial populations responsible for the degradation of organic pollutants in various natural environments. However, the presence of other easily degradable substrates may induce significant physiological changes by altering both the rate of incorporation of the target compound into the biomass and the microbial lipid profiles. In order to test this hypothesis,Cupriavidus necatorJMP134, a 2,4-dichlorophenoxyacetic acid (2,4-D)-degrading bacterium, was incubated with [13C

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Ingraham, Neil L., R. J. Johnson, and Robert Broadbent. "Facility-Altered Stable Isotopic Ratios of Power Generation Cooling Wastewater: Opportunity for Tracing Leakages." Environmental Science & Technology 28, no. 11 (1994): 1983–86. http://dx.doi.org/10.1021/es00060a032.

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Perini, Matteo, Mohamadou Bawe Nfor, Federica Camin, Silvia Pianezze, and Edi Piasentier. "Using Bioelements Isotope Ratios and Fatty Acid Composition to Deduce Beef Origin and Zebu Feeding Regime in Cameroon." Molecules 26, no. 8 (2021): 2155. http://dx.doi.org/10.3390/molecules26082155.

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The purpose of this study was to address the lack of knowledge regarding the stable isotopic composition of beef from zebu cattle reared in tropical Africa. Sixty beef carcasses belonging to the most common zebu breeds (Goudali, white Fulani, and red Mbororo) were selected and classified according to their subcutaneous fat color (white, cream or yellow). The stable isotope ratios of five bioelements—H, O, C, N, and S—in muscle fractions and the fatty acids composition were analyzed. Zebu meat from Cameroon shows peculiar δ13C values, related to the almost exclusive intake of grazed tropical gr

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46

Hartland, Adam, Graham D. Fenwick, and Sarah J. Bury. "Tracing sewage-derived organic matter into a shallow groundwater food web using stable isotope and fluorescence signatures." Marine and Freshwater Research 62, no. 2 (2011): 119. http://dx.doi.org/10.1071/mf10110.

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Little is known about the feeding modes of groundwater invertebrates (stygofauna). Incorporation of sewage-derived organic matter (OM) into a shallow groundwater food web was studied using fluorescence and stable isotope signatures (δ13C and δ15N). Organic pollution was hypothesised to limit sensitive species’ abundances along the contamination gradient and isotope signatures of stygofauna consuming sewage-derived OM were expected to be enriched in δ15N. Stygofauna communities near a sewage treatment plant in New Zealand were sampled over 4 months and microbial biofilms were incubated in situ

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Zhang, Kai, Xiangyu Chen, Menghua Chen, Xuying Tan, and Kaisheng Jiang. "Research Hotspots in and Progress of Stable Isotopic Techniques Applied in Tracing Mine Water Pollution and Its Environmental Impact: A Bibliometric and Visualization Analysis from 1998 to 2023." Water 16, no. 19 (2024): 2850. http://dx.doi.org/10.3390/w16192850.

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Stable isotope techniques have become a critical tool for tracking mine water and identifying its contamination. In order to explore in depth the research hotspots and trends in stable isotope technology in the study of mine water and the environmental pollution it induces, the Web of Science Core Collection (WoSCC) database of the relevant literature in this field from 1998 to 2023 was used for visual bibliometric analysis by applying CiteSpace software (version 5.7R5). The results showed that the periodical literature in this field shows a fluctuating upward trend. In the cooperation network

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Soto, David X., Leonard I. Wassenaar, Keith A. Hobson та Jordi Catalan. "Effects of size and diet on stable hydrogen isotope values (δD) in fish: implications for tracing origins of individuals and their food sources". Canadian Journal of Fisheries and Aquatic Sciences 68, № 11 (2011): 2011–19. http://dx.doi.org/10.1139/f2011-112.

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Recent studies suggest that stable hydrogen isotope ratios (δD) of fish can be used to track their watershed origin and the relative contributions of source material. Both applications assume that there is no metabolic or trophic effect on tissue δD. We studied the local variation of δD values in four fish species of contrasting size and feeding habits in an isotopically homogenous reservoir (Flix, Spain). Other isotopic values (δ15N, δ13C) and trace metal content were measured as indicators of trophic and bioaccumulation patterns. In addition, isotopic values (δD, δ15N, δ13C) of other food we

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Sealy, Judith, Richard Armstrong, and Carmel Schrire. "Beyond lifetime averages: tracing life histories through isotopic analysis of different calcified tissues from archaeological human skeletons." Antiquity 69, no. 263 (1995): 290–300. http://dx.doi.org/10.1017/s0003598x00064693.

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Stable-isotopic analyses of human bone, now an established aid to dietary reconstruction in archaeology, represent the diet as averaged over many years. Separate analysis of different skeletal components enables changes in diet and place of residence to be tracked, giving a fuller life-history for long-dead individuals.

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Min, Jun-Oh, Min-Seob Kim, Boyeon Lee, et al. "Characterization of Phytoplankton-Derived Amino Acids and Tracing the Source of Organic Carbon Using Stable Isotopes in the Amundsen Sea." Marine Drugs 22, no. 10 (2024): 476. http://dx.doi.org/10.3390/md22100476.

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We utilized amino acid (AA) and carbon stable isotope analyses to characterize phytoplankton-derived organic matter (OM) and trace the sources of organic carbon in the Amundsen Sea. Carbon isotope ratios of particulate organic carbon (δ13C-POC) range from −28.7‰ to −23.1‰, indicating that particulate organic matter originated primarily from phytoplankton. The dissolved organic carbon isotope (δ13C-DOC) signature (−27.1 to −21.0‰) observed in the sea-ice melting system suggests that meltwater contributes to the DOC supply of the Amundsen Sea together with OM produced by phytoplankton. A negativ

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