Dr. Matthias Gehre
Head of the Laboratory of Stable Isotopes
Contact / Address
Phone +49 (0) 341 235 1361
Fax +49 (0) 341 235 1443
Department of Isotope Biogeochemistry
Helmholtz Centre for Environmental Research - UFZ
Permoserstrasse 15
04318 Leipzig

The Laboratory of Stable Isotopes (LSI) in the UFZ was established in 1992 as a part of the Department of Analytical Chemistry. Since 2005 the LSI is integrated in the Department of Isotope Biogeochemistry
Matthias Gehre is the president of the Joint Works Council (Gesamtbetriebsrat) of Helmholtz Centre for Environmental Research - UFZ
Publications
Patterns of stable S isotopes in a forested catchment as indicators for biological S turnover
Biochemistry 47 , 319 - 333
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Characterizing the redox status in three different forested wetlands with geochemical data
Environ. Sci. Technol. 40 (24), 7609 - 7615
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15N-investigations on the influence of toluene on the nitrogen metabolism of Tetrahymena pyriformis as a model for environmental medicine
Isot. Environ. Health Stud. 33 (1-2), 145
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15N investigation into the effect of a pollutant on the nitrogen metabolism of Tetrahymena pyriformis as a model for environmental medical research
Environ. Health Perspect. 106 (8), 493 - 497
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Development of an enantiomer-specific stable carbon isotope analysis (ESIA) method for assessing the fate of a-hexachlorocyclo-hexane in the environment
Rapid Commun. Mass Spectrom. 25 (10), 1363 - 1372
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Evaluating degradation of hexachlorcyclohexane (HCH) isomers within a contaminated aquifer using compound-specific stable carbon isotope analysis (CSIA)
Water Res. 71 , 187 - 196
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Microbial sulfate reduction in deep sediments of the southwest Pacific (ODP Leg 181; Sites 1119 to 1125): Evidence from stable sulfur isotope fractionation and pore water modeling
Geochim. Cosmochim. Acta 66 (Suppl. 1), A95
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Microbial sulfate reduction in deep sediments of the Southwest Pacific (ODP Leg 181, Sites 1119-1125): evidence from stable sulfur isotope fractionation and pore water modeling
Mar. Geol. 205 (1-4), 249 - 260
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34S/32S and 18O/16O fractionation during sulfur disproportionation by Desulfobulbus propionicus
Geomicrobiol. J. 22 (5), 219 - 226
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Stable isotope variations of recent und subfossil 14C-dated pine samples (Pinus sylvestris L.) from the alpine tree-line on the Kola Peninsula, North-West Russia
Isot. Environ. Health Stud. 36 (4), 392
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Abiotic sulfide oxidation via manganese fuels the deep biosphere
Geochim. Cosmochim. Acta 72 (12 Suppl.), A102
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Comprehensive inter-laboratory calibration of reference materials for δ18O versus VSMOW using various on-line high-temperature conversion techniques
Rapid Commun. Mass Spectrom. 23 (7), 999 - 1019
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Organic matter resources fuelling food webs in a human-modified lowland river: importance of habitat and season
Hydrobiologia 841 (1), 121 - 131
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After two decades a second anchor for the VPDB δ13C scale
Rapid Commun. Mass Spectrom. 20 (21), 3165 - 3166
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New guidelines for δ13C measurements
Anal. Chem. 78 (7), 2439 - 2441
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Carbon and hydrogen isotope fractionation of benzene during biodegradation under sulfate-reducing conditions: a laboratory to field site approach
Rapid Commun. Mass Spectrom. 23 (16), 2439 - 2447
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Applicability of stable isotope fractionation analysis for the characterization of benzene biodegradation in a BTEX-contaminated aquifer
Environ. Sci. Technol. 41 (10), 3689 - 3696
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Climatic response of stable isotope variations in wood cellulose of pine (PINUS SYLVESTRIS L.) and their tree-ring width on the Kola Peninsula, North-Western Russia
Study of environmental change using isotope techniques : proceedings; international conference held in Vienna, 23-27 April 2001
International Atomic Energy Agency (IAEA), Vienna, p. 243 - 251
High Temperature elemental analysis and pyrolysis
ASI, Jahrestagung, Rostock-Warnemünde, 25.-27.9.2002
High temperature pyrolysis: a new system for isotopic and elemental analysis - new approaches for stable isotope ratio measurements
New approaches for stable isotope ratio measurements. Proceedings of an Advisory Group meeting held in Vienna, 20–23 September 1999
IAEA TecDoc 1247
International Atomic Energy Agency (IAEA), Vienna, p. 33 - 38
Analytical aspects of 15N-investigation of the nitrogen metabolism of Tetrahymena pyriformis using GC/C-IRMS/MS-MS coupling
Isot. Environ. Health Stud. 34 (1-2), 219
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Continuous flow 2H/1H and 18O/16O analysis of water samples with dual inlet precision
Rapid Commun. Mass Spectrom. 18 (22), 2650 - 2660
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Methodical studies for D/H-isotope analysis - a new technique for the direct coupling of sample preparation to an IRMS
Isot. Environ. Health Stud. 32 (4), 335 - 340
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Sample preparation device for quantitative hydrogen isotope analysis using chromium metal
Anal. Chem. 68 (24), 4414 - 4417
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Optimization of on-line hydrogen stable isotope ratiomeasurements of halogen- and sulfur-bearing organic compounds using elemental analyzer–chromium/high-temperature conversion isotope ratio mass spectrometry (EA-Cr/HTC-IRMS)
Rapid Commun. Mass Spectrom. 31 (6), 475 - 484
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On-line hydrogen-isotope measurements of organic samples using elemental chromium: an extension for high temperature elemental-analyzer techniques
Anal. Chem. 87 (10), 5198 - 5205
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High-temperature elemental analysis and pyrolysis techniques for stable isotope analysis
Rapid Commun. Mass Spectrom. 17 (13), 1497 - 1503
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Evaluating the sources and diagenesis of dissolved organic carbon in shallow groundwater using 15N and carbon isotopes
In: Farina, A., Kennedy, J., Bossù, V. (eds.)
Proceedings VII International Congress of Ecology INTECOL, Florence, Italy, 19-25 July 1998
Backhuys Publishers, p. 155
Bestimmung der Quellen und Diagenese von Huminstoffen aus Grundwasser mittels Stickstoff- und Kohlenstoffisotopen = Investigation for evaluating the sources and diagenesis of groundwater humic substances using 15N and carbon isotopes
In: Pörschmann, J., Freitag, D., Kopinke, F.-D. (Hrsg.)
2. Workshop Huminstoffe, 3. und 4. Dezember 1997 am UFZ-Umweltforschungszentrum Leipzig-Halle GmbH
UFZ-Bericht 22/1998
UFZ Leipzig-Halle GmbH, Leipzig, S. 39 - 41
Natural isotope variations of sulfur as indication for atmospheric depositions on pine stands
In: Brunold, C., Rennenberg, H., De Kok, L.J., Stulen, I., Davidian, J.C. (eds.)
Sulfur nutrition and sulfur assimilation in higher plants: molecular, biochemical and physiological aspects
Paul Haupt Publishers, Bern, p. 235 - 238
Performance of the wet oxidation unit of the HPLC isotope ratio mass spectrometry system for halogenated compounds
Anal. Chem. 86 (15), 7252 - 7257
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Multidimensional isotope analysis of carbon, hydrogen and oxygen as tool for identification of the origin of ibuprofen
J. Pharm. Biomed. Anal. 115 , 410 - 417
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Multi-element isotopic evidence for monochlorobenzene and benzene degradation under anaerobic conditions in contaminated sediments
Water Res. 207 , art. 117809
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Requirements for chromium reactors for use in the determination of H isotopes in compound-specific stable isotope analysis cf chlorinated compounds
Anal. Chem. 92 (3), 2383 - 2387
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Microbial degradation of the pharmaceutical ibuprofen and the herbicide 2,4-D in water and soil - use and limits of data obtained from aqueous systems for predicting their fate in soil
Sci. Total Environ. 444 , 32 - 42
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Stable isotope tracer technique as a tool to increase the sensitivity of plant growth bioassays - investigations with pentachlorophenol and trichloroacetic acid
Fresenius Environ. Bull. 9 , 225 - 231
Isotopenmassenspektrometrische 13C/15N-Traceruntersuchungen zur Wirkung von Chlororganika auf höhere Pflanzen am Beispiel von Pentachlorphenol
In: Fomin, A., Arndt, U., Elsner, D., Klumpp, A. (Hrsg.)
Bioindikation: Biologische Testverfahren. Beiträge und Diskussion - 2. Hohenheimer Workshop zur Bioindikation am Kraftwerk Altbach-Deizisau, 6.4.1998
Heimbach, Stuttgart, S. 199 - 204
Einsatz stabiler Isotope zum ökotoxikologischen Wirkungsnachweis chlororganischer Verbindungen
In: Oehlmann, J., Markert, B. (Hrsg.)
Ökotoxikologie: Ökosystemare Ansätze und Methoden
ecomed, Landsberg am Lech, S. 117 - 121
Trophic structure and major trophic links in conventional versus organic farming systems as indicated by carbon stable isotope ratios of fatty acids
Oikos 118 (10), 1579 - 1589
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Analysis of 13C labeling enrichment in microbial culture applying metabolic tracer experiments using gas chromatography-combustion-isotope ratio mass spectrometry
Anal. Biochem. 380 (2), 202 - 210
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Coupling of a headspace autosampler with a programmed temperature vaporizer for stable carbon and hydrogen isotope analysis of volatile organic compounds at microgram per liter concentrations
Anal. Chem. 87 (2), 951 - 959
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Evaluation of the performance of high temperature conversion reactors for compound-specific oxygen stable isotope analysis
Isot. Environ. Health Stud. 53 (2), 116 - 133
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A novel online approach to the determination of isotopic ratios for organically bound chlorine, bromine and sulphur
Rapid Commun. Mass Spectrom. 25 (20), 3114 - 3122
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Lignin dynamics in two 13C-labelled arable soils during 18 years
Eur. J. Soil Sci. 60 (2), 250 - 257
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Mineral fertilization did not affect decay of old lignin and SOC in a 13C-labeled arable soil over 36 years
Biogeosciences 6 (7), 1139 - 1148
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Sample preparation techniques for the determination of natural 15N/14N variations in amino acids by gas chromatography-combustion-isotope ratio mass spectrometry (GC-C-IRMS)
Isot. Environ. Health Stud. 39 (3), 233 - 244
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Using natural isotope variations of nitrogen in plants as an early indicator of air pollution stress
J. Mass Spectrom. 32 (8), 855 - 863
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15N/14N analysis of amino acids with GC-C-IRMS - Methodical investigations and ecotoxicological applications
Isot. Environ. Health Stud. 31 (3-4), 367 - 375
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In vivo emission of dinitrogen by earthworms via denitrifying bacteria in the gut
Appl. Environ. Microb. 72 (2), 1013 - 1018
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Compound specific stable chlorine isotopic analysis of volatile aliphatic compounds using gas chromatography hyphenated with multiple collector inductively coupled plasma mass spectrometry
Anal. Chem. 89 (17), 9131 - 3138
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Anthropogenic impacts on natural nitrogen isotope variations in Pinus sylvestris stands in an industrially polluted area
Environ. Pollut. 97 (1-2), 175 - 181
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Geochemical signatures (C, N, δ13C, δ15N, metals) of suspended matter in the river Weiße Elster (central Germany): their seasonal and flow-related distribution 1997-2001
Isot. Environ. Health Stud. 41 (2), 141 - 159
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Land use impacts on the isotopic signature (13C, 14C, 15N) of water-soluble fulvic acids in a German fen area
Soil Sci. 165 (9), 728 - 736
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Correlation between 14C, 15N, 13C and spectroscopic properties of dissolved humic substances
International Symposium on Isotope Techniques in Water resources Development and Management, Vienna, 10.-14.5.1999
International Atomic Energy Agency (IAEA), Vienna, p. 270 - 271
Isotopenchemische und spektroskopische Eigenschaften der gelösten organischen Substanz: Hinweise auf eine unterschiedliche Dynamik von DOC und DON
Jahrestagung der Deutschen Bodenkundlichen Gesellschaft "Nachhaltige Bodennutzung im 3. Jahrtausend", Hannover, 4.-12.9.1999
DBG-Mitteilungen 91/1
Deutsche Bodenkundliche Gesellschaft, Oldenburg, p. 379 - 382
Distinct nitrogen cycling and steep chemical gradients in Trichodesmium colonies
ISME J. 14 (2), 399 - 412
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Carbon isotope analyses of cellulose using two different on-line techniques (elemental analysis and high-temperature pyrolysis) - a comparison
Rapid Commun. Mass Spectrom. 19 (3), 343 - 348
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Flooding of an open pit in a lignite mining area - a complicated process studied by stable isotopes
Isot. Environ. Health Stud. 33 (1-2), 204 - 205
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Sulfate deprivation triggers high methane production in a disturbed and rewetted coastal peatland
Biogeosciences 16 (9), 1937 - 1953
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On-line δ18O measurement of organic and inorganic substances
Rapid Commun. Mass Spectrom. 13 , 1685 - 1693
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Standardization for oxygen isotope ratio measurement - still an unsolved problem
Rapid Commun. Mass Spectrom. 13 , 1248 - 1251
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Tracing the slow growth of anaerobic methane-oxidizing communities by 15N-labelling techniques
FEMS Microbiol. Ecol. 63 (3), 401 - 411
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Simultaneous compound-specific analysis of δ33S and δ34S in organic compounds by GC-MC-ICPMS using medium- and low-mass-resolution modes
Anal. Chem. 92 (21), 14685 - 14692
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Toward improved accuracy in chlorine isotope analysis: Synthesis routes for in-house standards and characterization via complementary mass spectrometry methods
Anal. Chem. 91 , 12290 - 12297
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Stable nitrogen isotopes in essential versus non-essential amino acids of different plankton size fractions
Isot. Environ. Health Stud. 43 (4), 281 - 293
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Incorporation of nitrogen from N2 fixation into amino acids of zooplankton
Limnol. Oceanogr. 57 (1), 199 - 210
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Influence of upwelling Zechstein sulphate on the concentration and isotope signature of sedimentary sulphides in a fluvioglacial sand aquifer
Appl. Geochem. 20 (2), 261 - 274
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Isotopic disproportionation during hydrogen isotopic analysis of nitrogen-bearing organic compounds
Rapid Commun. Mass Spectrom. 29 (9), 878 - 884
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Recent advances in multi-element compound-specific stable isotope analysis of organohalides: Achievements, challenges and prospects for assessing environmental sources and transformation
Trends Environ. Anal. Chem. 11 , 1 - 8
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Contribution of microorganisms to non-extractable residue formation during biodegradation of ibuprofen in soil
Sci. Total Environ. 445-446 , 377 - 384
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Formation and fate of bound residues from microbial biomass during 2,4-D degradation in soil
Environ. Sci. Technol. 45 (3), 999 - 1006
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Investigation of active site amino acid influence on carbon and chlorine isotope fractionation during reductive dechlorination
FEMS Microbiol. Ecol. 98 (8), fiac072
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New biotite and muscovite isotopic reference materials, USGS57 and USGS58, for δ2H measurements–A replacement for NBS 30
Chem. Geol. 467 , 89 - 99
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Novel silver-tubing method for quantitative introduction of water into high-temperature conversion systems for stable hydrogen and oxygen isotopic measurements
Rapid Commun. Mass Spectrom. 24 (13), 1821 - 1827
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Cycling of redox-sensitive elements in a sandy subterranean estuary of the southern North Sea
Mar. Chem. 188 , 6 - 17
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Development and validation of an universal interface for compound-specific stable isotope analysis of chlorine (37Cl/35Cl) by GC-high-temperature conversion (HTC)-MS/IRMS
Anal. Chem. 87 (5), 2832 - 2839
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Online isotope analysis of 37Cl/35Cl universally applied for semi-volatile organic compounds using GC-MC-ICPMS
J. Anal. At. Spectrom. 33 (2), 314 - 321
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Compound-specific hydrogen isotope analysis of heteroatom-bearing compounds via gas chromatography-chromium-based high-temperature conversion (Cr/HTC)-isotope ratio mass spectrometry
Anal. Chem. 87 (18), 9443 - 9450
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Compound-specific hydrogen isotope analysis of fluorine-, chlorine-, bromine- and iodine-bearing organics using gas chromatography–chromium-based high-temperature conversion (Cr/HTC) isotope ratio mass spectrometry
Rapid Commun. Mass Spectrom. 31 (13), 1095 - 1102
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Bacterial communities potentially involved in iron-cycling in Baltic Sea and North Sea sediments revealed by pyrosequencing
FEMS Microbiol. Ecol. 92 (4), fiw054
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Isotope fractionation of aromatic hydrocarbons - a perspective to characterise microbial in-situ degradation
Isot. Environ. Health Stud. 36 (4), 383 - 384
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Characterisation of microbial in situ degradation of aromatic hydrocarbons
In: Magar, V.S., Vogel, T.M., Aelion, C.M., Leeson, A. (eds.)
Innovative methods in support of bioremediation. 6th International In Situ and On-Site Bioremediation Symposium, San Diego, California, USA, 4-7 June 2001. Volume 4
Battelle Press, Columbus, OH, p. 99 - 108
Isotope fractionation of toluene: A perspective to characterize microbial in situ degradation
The Scientific World Journal 2 , 1227 - 1234
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Variations in 13C/12C and D/H enrichment factors of aerobic bacterial fuel oxygenate degradation
Environ. Sci. Technol. 41 (6), 2036 - 2043
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Organic reference materials for hydrogen, carbon, and nitrogen stable isotope-ratio measurements: caffeines, n-alkanes, fatty acid methyl esters, glycines, L-valines, polyethylenes, and oils
Anal. Chem. 88 (8), 4294 - 4302
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Natural isotopic variation in species of lichens an altitude gradient in the eastern Cantral Apls
Ber. nat.-med. Ver. Salzburg 11 , 25 - 34
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Nitrogen isotope ratios in pine bark as an indicator of N emissions from anthropogenic sources
Environ. Monit. Assess. 69 (3), 283 - 297
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Natürliche Isotopenverhältnisse des Stickstoffs zur Bioindikation in Kiefern-Wald-Ökosystemen
Hercynia N.F. 50 (2), 99 - 114
Influence of reduced S inputs on the sulfate pool in the humus layer and sulfate uptake in Pinus sylvestris L. as indicated by natural isotope variations of sulfur and oxygen
J. Appl. Bot. Food Qual. - Angew. Bot. 78 (1), 18 - 24
Effects of N inputs on natural isotopes variations of nitrogen in various compartments of Scots pine stands
Isot. Environ. Health Stud. 36 (4), 357
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The nitrogen cycle in anaerobic methanotrophic mats of the Black Sea is linked to sulfate reduction and biomass decomposition
FEMS Microbiol. Ecol. 86 (2), 231 - 245
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Multiple tracing of fast solute transport in a drained grassland soil
Geoderma 109 , 245 - 268
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Virtual Special Issue of the 3rd Joint European Stable Isotope Users Group Meeting (JESIUM) 2012, held in Leipzig, Germany
Rapid Commun. Mass Spectrom. 28 (7), 843
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Origin and distribution of sulfate in surface waters of the Mansfeld mining district, Germany
Isot. Environ. Health Stud. 36 (4), 388 - 389
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Origin and distribution of sulphate in surface waters of the Mansfeld mining district, Central Germany
Isot. Environ. Health Stud. 37 (2), 101 - 112
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Characterisation of the in situ biodegradation of aromatic compounds in contaminated aquifers using isotope fractionation
In: Wiesner, J. (ed.)
Fachtagung Sanierung und Entwicklung teerkontaminierter Standorte, Dresden, 20.-21.3.2001
DECHEMA-Fachgespräche Umweltschutz
DECHEMA, Frankfurt/Main, p. 493 - 496
In-situ biodegradation of tetrachloroethene and trichloroethene in contaminated aquifers monitored by stable isotope fractionation
Isot. Environ. Health Stud. 39 (2), 113 - 124
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Characterisation and origin of hydrothermal waters at São Miguel (Azores) inferred by chemical and isotopic composition
J. Volcanol. Geotherm. Res. 346 , 104 - 117
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