Impact of heavy metal remediation by soil washing with EDTA on carbon turnover - closing the functional link between microorganisms and microarthropods by 13C fatty acids analysis Heavy metal contamination of soils has a great impact on soil biota and carbon turnover. Assisted soil washing using a chelating agent such as ethylen…

Impact of heavy metal remediation by soil washing with EDTA on carbon turnover - closing the functional link between microorganisms and microarthropods by 13C fatty acids analysis #stableisotopes www.sciencedirect.com/science/arti...

Fire increases soil nitrogen immobilization via increasing functional gene abundance under experimental warming conditions in Arctic heath tundra Climate warming increases the frequency of wildfires in Arctic tundra, and the capacity of post-fire soil to retain nutrients such as nitrogen (N) con…

Fire increases soil nitrogen immobilization via increasing functional gene abundance under experimental warming conditions in Arctic heath tundra #stableisotopes www.sciencedirect.com/science/arti...

Phenological stage-specific DOM transformations sustain N2 fixation during rice growth in paddy soil Bioavailable carbon (C) is a key determinant of free-living nitrogen (N) fixation, yet the regulatory role of dissolved organic matter (DOM) in paddy …

Phenological stage-specific DOM transformations sustain N2 fixation during rice growth in paddy soil #stableisotopes www.sciencedirect.com/science/arti...

Microbial lifestyles driven by C: N stoichiometric imbalance govern responses of carbon metabolism to nitrogen addition Soil under straw incorporation systems forms numerous microbial hotspots, induced by plant roots (rhizosphere) and straw detritus (detritusphere), whi…

Microbial lifestyles driven by C: N stoichiometric imbalance govern responses of carbon metabolism to nitrogen addition #stableisotopes www.sciencedirect.com/science/arti...

Elevated CO2 does not change the rhizosphere effect on gross nitrogen and phosphorus mobilization in a mature Eucalyptus woodland Sufficient nutrient availability is a prerequisite for enhanced plant and ecosystem production under elevated atmospheric carbon dioxide levels. While…

Elevated CO2 does not change the rhizosphere effect on gross nitrogen and phosphorus mobilization in a mature Eucalyptus woodland #stableisotopes www.sciencedirect.com/science/arti...

Elevation modulates microbial carbon use efficiency responses to field and laboratory warming in alpine soils of the Qinghai–Tibetan Plateau Soil microbial carbon use efficiency (CUE) regulates the balance between respiration and growth and is sensitive to both temperature and soil physicoc…

Elevation modulates microbial carbon use efficiency responses to field and laboratory warming in alpine soils of the Qinghai–Tibetan Plateau #stableisotopes www.sciencedirect.com/science/arti...

Quantification of Fish Littoral Carbon Use and Trophic Position Using Stable Isotopes: An Empirical Comparison of Equations Using Freshwater Lakes Standardizing stable isotope values with these metrics allows for comparison across different systems and time scales; however, several equations to quantify LCU and TP have been introduced with litt...

Quantification of Fish Littoral Carbon Use and Trophic Position Using Stable Isotopes: An Empirical Comparison of Equations Using Freshwater Lakes - Andersen - 2026 - Ecology and Evolution #stableisotopes onlinelibrary.wiley.com/doi/full/10....

Intercolony and Intra‐Annual Variations in Isotopic Niche of Red‐Footed Boobies Sula sula in the Tropical Indian Ocean We compared the diet and assessed geographic and seasonal variations in the isotopic niches of red-footed boobies across three Indian Ocean atolls. Our results demonstrate plasticity in both diet and...

Intercolony and Intra‐Annual Variations in Isotopic Niche of Red‐Footed Boobies Sula sula in the Tropical Indian Ocean - Appoo - 2026 - Ecological Research #stableisotopes esj-journals.onlinelibrary.wiley.com/doi/full/10....

Greater trophic diversity of soil animal communities under agricultural land use and tropical climate - Nature Ecology & Evolution Soil fauna is an important but often neglected component of terrestrial food webs. Here the authors use a large dataset of stable isotope observations to analyse how soil animal trophic diversity vari...

Zhou, Z., Eisenhauer, N., Barnes, A.D. et al. Greater trophic diversity of soil animal communities under agricultural land use and tropical climate. #stableisotopes Nat Ecol Evol 10, 700–711 (2026). doi.org/10.1038/s415...

Variation in marine mammal sulfur stable isotope compositions (δ34S) is driven by sources of primary production, not trophic position doi.org/10.3354/meps... #stableisotopes

Trophic ecology of cephalopod paralarvae in the Sargasso Sea revealed from compound-specific stable isotope analysis of amino acids (δ13C and δ15N) doi.org/10.3354/meps... #stableisotopes

Measurement report: Nitrogen isotope (δ15N) signatures of ammonia emissions from livestock farming: implications for source apportionment of haze pollution Abstract. Ammonia emissions from agriculture are the primary source of atmospheric reactive nitrogen, significantly impacting air pollution, soil acidification, eutrophication of water bodies, and hum...

Measurement report: Nitrogen isotope (δ15N) signatures of ammonia emissions from livestock farming: implications for source apportionment of haze pollution, Atmos. Chem. Phys., 26, 4953–4965, doi.org/10.5194/acp-..., #stableisotopes

The Effect of Temperature on Trophic Discrimination of Stable Isotopes (13C and 15N) and Biokinetics in Common Carp (Cyprinus carpio, L. 1758) Stable isotope analysis (SIA) provides essential information toward a better understanding of trophic ecology. However, the interpretation of SIA results relies on assumptions about the trophic discr...

The Effect of Temperature on Trophic Discrimination of Stable Isotopes (13C and 15N) and Biokinetics in Common Carp (Cyprinus carpio, L. 1758) - Kuklina - Journal of Experimental Zoology Part A: Ecological and Integrative Physiology #stableisotopes onlinelibrary.wiley.com/doi/10.1002/...

In situ analysis of carbon isotopes in various materials by laser-ablation isotope ratio mass spectrometry (LA-IRMS) Carbon isotopes are an important geochemical tracer for studies in Earth and environmental sciences. In the past few decades, in situ carbon isotope a…

In situ analysis of carbon isotopes in various materials by laser-ablation isotope ratio mass spectrometry (LA-IRMS) #stableisotopes www.sciencedirect.com/science/arti...

Carbon monoxide oxidation expands the known metabolic capacity in anaerobic methanotrophic consortia - Nature Communications Consortia of anaerobic methane-oxidizing archaea and sulphate-reducing bacteria can grow with minimal amounts of free energy. Here, Guo et al. show that these consortia can oxidize carbon monoxide, wh...

Guo, Y., Utter, D.R., Murali, R. et al. Carbon monoxide oxidation expands the known metabolic capacity in anaerobic methanotrophic consortia. #stableisotopes Nat Commun 17, 3461 (2026). doi.org/10.1038/s414...

Ecological and environmental controls on plant wax production and stable isotope fractionation in modern terrestrial Arctic vegetation Abstract. Terrestrially-derived plant waxes and their compound-specific stable carbon (δ13C) and hydrogen (δ2H) isotope ratios are valuable tools for inferring past changes in vegetation and hydrology...

Ecological and environmental controls on plant wax production and stable isotope fractionation in modern terrestrial Arctic vegetation, Biogeosciences, 23, 2503–2523, doi.org/10.5194/bg-2..., #stableisotopes

Stable Carbon Isotope Analysis of PFOA and PFOS Using Orbitrap Mass Spectrometry Compound-specific isotope analysis (CSIA) is a powerful tool for pollutant source apportionment. However, conventional isotope ratio mass spectrometry (IRMS) is limited for nonvolatile compounds like perfluorooctanoic acid (PFOA) and perfluorooctanesulfonic acid (PFOS). Here, we demonstrated high-resolution Orbitrap mass spectrometry for δ13C analysis of these compounds. This technique enables direct isotopologue detection without combustion, providing nM-level sensitivity and molecular structure preservation. δ13C values for PFOA and PFOS reagents agreed well with those from elemental analyzer IRMS (EA-IRMS), with deviations within ±2.0‰ across resolution settings (17,500–140,000). Higher automatic gain control (AGC) targets improved precision; the optimal setting (5 × 106) yielded standard deviations below 1.2‰. Seven PFOA and two PFOS standards, each obtained from different commercial suppliers, were analyzed. The δ13C values measured by Orbitrap showed good agreement with EA-IRMS. In addition, spiked experiments using three different river water samples demonstrated that reliable δ13C measurements of PFOA and PFOS can be achieved in realistic aqueous environmental matrices. This approach expands the applicability of CSIA to nonvolatile PFAS and provides a new isotopic perspective for investigating their environmental sources and fate.

Stable Carbon Isotope Analysis of PFOA and PFOS Using Orbitrap Mass Spectrometry | Environmental Science & Technology Letters pubs.acs.org/doi/10.1021/... #stableisotopes

Gasoline Vehicular NOx Emissions and Isotopic Signatures Revealed by Chassis Dynamometer Measurements Nitrogen oxides (NOx) emitted from gasoline vehicles are major contributors to urban air pollution, yet accurately quantifying their absolute emissions and relative contributions remains challenging. ...

Gasoline Vehicular NOx Emissions and Isotopic Signatures Revealed by Chassis Dynamometer Measurements | Environmental Science & Technology Letters pubs.acs.org/doi/10.1021/... #stableisotopes

Accurate isotopic analysis of nitrate and nitrite in freshwater: integration of ion exchange and bacterial denitrification methods The bacterial denitrification method (Pseudomonas aureofaciens) is a widely used pretreatment technique for nitrogen and oxygen isotope analysis of nitrate (NO3−) and nitrite (NO2−), but concurrent re...

Accurate isotopic analysis of nitrate and nitrite in freshwater: integration of ion exchange and bacterial denitrification methods #stableisotopes pubs.rsc.org/en/content/a...

Jung, J., Wald, T., Foreman, A.D. et al. Crustose coralline algae biomineral-bound nitrogen isotopes provide a baseline to reconstruct coral trophic strategies. Commun Earth Environ (2026). doi.org/10.1038/s432... #stableisotopes

"Atomic Ecology Meets.... Dr. Jessica Leuders-Dumont" by Dr. Brian Hayden www.atomicecology.com/post/atomic-... #stableisotopes

Toward Molecular Forensics of Agrochemicals with Orbitrap IRMS: Isotopic Fingerprints of Imidacloprid Sources and Elucidating Hydrolysis Imidacloprid (IMI) is a widespread neonicotinoid insecticide of environmental concern because of its ecotoxicity and persistence. Tracing its commercial sources and environmental transformation is dif...

Toward Molecular Forensics of Agrochemicals with Orbitrap IRMS: Isotopic Fingerprints of Imidacloprid Sources and Elucidating Hydrolysis | Journal of the American Society for Mass Spectrometry pubs.acs.org/doi/abs/10.1... #stableisotopes

Nonpyrogenic “Black” Nitrogen Likely Plays a Major Yet Underrecognized Role in the Global Nitrogen Cycle Condensed aromatic nitrogen (ConAN) is commonly found in soil and aquatic environments. ConAN is broadly viewed by the biogeochemistry community as a combustion-derived product leading to its frequent...

Nonpyrogenic “Black” Nitrogen Likely Plays a Major Yet Underrecognized Role in the Global Nitrogen Cycle | Environmental Science & Technology pubs.acs.org/doi/full/10.... #stableisotopes

Disentangling urban wastewater sources using isotopic tracers and CEC-based diagnostic indicators Urban rivers receiving multiple wastewater inputs require reliable diagnostic tools to disentangle overlapping nitrogen sources. Here, we investigate …

Disentangling urban wastewater sources using isotopic tracers and CEC-based diagnostic indicators #stableisotopes www.sciencedirect.com/science/arti...

Effects of very short‐term formalin fixation on coral carbon and nitrogen stable isotopes, total lipids, and chlorophyll a and c2 concentrations The type of tissue preservation used in coral studies determines the type and quantity of downstream analyses that can be conducted on a given sample. Formalin is often used as a tissue preservative,...

Effects of very short‐term formalin fixation on coral carbon and nitrogen stable isotopes, total lipids, and chlorophyll a and c2 concentrations - Dixon - 2026 - Limnology and Oceanography: Methods #stableisotopes aslopubs.onlinelibrary.wiley.com/doi/abs/10.1...

Evaluating drivers of environmental change in a lake sediment core: Insights from spectroscopic metrics of water-extractable organic matter and stable carbon isotopes Freshwater lakes play a critical role in the global carbon cycle by storing and transforming organic matter (OM) from both terrestrial and aquatic sou…

Evaluating drivers of environmental change in a lake sediment core: Insights from spectroscopic metrics of water-extractable organic matter and stable carbon isotopes #stableisotopes www.sciencedirect.com/science/arti...

Fresh-seawater interface shapes nitrogen fate in a subtropical estuary: Insights from multi-isotopic and metagenomic analyses #stableisotopes www.sciencedirect.com/science/arti...

Quantitative assessment of denitrification rates at the freshwater-saltwater interface of a limestone island based on isotopic tracers and mass balance calculation　 #stableisotopes www.sciencedirect.com/science/arti...

Source-specific organic matter modulates Anammox via humic-like DOM in mangrove sediments: Implications for eutrophication mitigation #stableisotopes www.sciencedirect.com/science/arti...

Evidencing the role of seagrass meadows on nutrients and POM interception from shrimp ponds in a Mudflat-Seagrass-Coral Reef continuum through stable isotopes #stableisotopes www.sciencedirect.com/science/arti...