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	1.	Stable isotope determination of ester and ether methyl moieties in plant methoxyl groups. [electronic resource] by Greule, Markus Keppler, Frank Producer: 20120410 In: Isotopes in environmental and health studies vol. 47 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	2.	Stable hydrogen isotope values of lignin methoxyl groups of four tree species across Germany and their implication for temperature reconstruction. [electronic resource] by Anhäuser, Tobias Greule, Markus Keppler, Frank Producer: 20180413 In: The Science of the total environment vol. 579 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	3.	Evidence of anaerobic syntrophic acetate oxidation in biogas batch reactors by analysis of 13C carbon isotopes. [electronic resource] by Polag, Daniela Heuwinkel, Hauke Laukenmann, Stephan Greule, Markus Keppler, Frank Producer: 20140630 In: Isotopes in environmental and health studies vol. 49 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	4.	Probing the diversity of chloromethane-degrading bacteria by comparative genomics and isotopic fractionation. [electronic resource] by Nadalig, Thierry Greule, Markus Bringel, Françoise Keppler, Frank Vuilleumier, Stéphane Producer: 20141031 In: Frontiers in microbiology vol. 5 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	5.	A simple rapid method to precisely determine (13)C/(12)C ratios of plant methoxyl groups. [electronic resource] by Greule, Markus Mosandl, Armin Hamilton, John T G Keppler, Frank Producer: 20090811 In: Rapid communications in mass spectrometry : RCM vol. 23 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	6.	Comment on Authenticity and traceability of vanilla flavors by analysis of stable isotopes of carbon and hydrogen. [electronic resource] by Greule, Markus Mosandl, Armin Hamilton, John T G Keppler, Frank Producer: 20150730 In: Journal of agricultural and food chemistry vol. 63 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	7.	Mean annual temperatures of mid-latitude regions derived from δ [electronic resource] by Anhäuser, Tobias Greule, Markus Polag, Daniela Bowen, Gabriel J Keppler, Frank Producer: 20180309 In: The Science of the total environment vol. 574 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	8.	A rapid and precise method for determination of D/H ratios of plant methoxyl groups. [electronic resource] by Greule, Markus Mosandl, Armin Hamilton, John T G Keppler, Frank Producer: 20090219 In: Rapid communications in mass spectrometry : RCM vol. 22 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	9.	δ²H, δ¹³C and δ¹⁸O from whole wood, α-cellulose and lignin methoxyl groups in Pinus sylvestris: a multi-parameter approach. [electronic resource] by Mischel, Maria Esper, Jan Keppler, Frank Greule, Markus Werner, Willy Producer: 20160912 In: Isotopes in environmental and health studies vol. 51 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	10.	Hydrogen and carbon isotope fractionation during degradation of chloromethane by methylotrophic bacteria. [electronic resource] by Nadalig, Thierry Greule, Markus Bringel, Françoise Vuilleumier, Stéphane Keppler, Frank Producer: 20140722 In: MicrobiologyOpen vol. 2 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	11.	A stable isotope approach to assessing water loss in fruits and vegetables during storage. [electronic resource] by Greule, Markus Rossmann, Andreas Schmidt, Hanns-Ludwig Mosandl, Armin Keppler, Frank Producer: 20151105 In: Journal of agricultural and food chemistry vol. 63 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	12.	Methyl sulfates as methoxy isotopic reference materials for δ [electronic resource] by Greule, Markus Moossen, Heiko Geilmann, Heike Brand, Willi A Keppler, Frank Producer: 20190204 In: Rapid communications in mass spectrometry : RCM vol. 33 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	13.	Position-specific isotope analysis of the methyl group carbon in methylcobalamin for the investigation of biomethylation processes. [electronic resource] by Wuerfel, Oliver Greule, Markus Keppler, Frank Jochmann, Maik A Schmidt, Torsten C Producer: 20130819 In: Analytical and bioanalytical chemistry vol. 405 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	14.	Methane oxidation in industrial biogas plants-Insights in a novel methanotrophic environment evidenced by pmoA gene analyses and stable isotope labelling studies. [electronic resource] by May, Tobias Polag, Daniela Keppler, Frank Greule, Markus Müller, Liane König, Helmut Producer: 20180827 In: Journal of biotechnology vol. 270 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	15.	Stable hydrogen and carbon isotope ratios of methoxyl groups during plant litter degradation. [electronic resource] by Anhäuser, Tobias Greule, Markus Zech, Michael Kalbitz, Karsten McRoberts, Colin Keppler, Frank Producer: 20160105 In: Isotopes in environmental and health studies vol. 51 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	16.	Stable isotope and high precision concentration measurements confirm that all humans produce and exhale methane. [electronic resource] by Keppler, Frank Schiller, Amanda Ehehalt, Robert Greule, Markus Hartmann, Jan Polag, Daniela Producer: 20160824 In: Journal of breath research vol. 10 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	17.	Measurements of 13C/12C methane from anaerobic digesters: comparison of optical spectrometry with continuous-flow isotope ratio mass spectrometry. [electronic resource] by Keppler, Frank Laukenmann, Stephan Rinne, Jennifer Heuwinkel, Hauke Greule, Markus Whiticar, Michael Lelieveld, Jos Producer: 20100913 In: Environmental science & technology vol. 44 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	18.	Sources and sinks of chloromethane in a salt marsh ecosystem: constraints from concentration and stable isotope measurements of laboratory incubation experiments. [electronic resource] by Keppler, Frank Röhling, Amelie Ninja Jaeger, Nicole Schroll, Moritz Hartmann, Simon Christoph Greule, Markus Producer: 20200731 In: Environmental science. Processes & impacts vol. 22 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	19.	Chloromethane emissions in human breath. [electronic resource] by Keppler, Frank Fischer, Jan Sattler, Tobias Polag, Daniela Jaeger, Nicole Schöler, Heinz Friedrich Greule, Markus Producer: 20180808 In: The Science of the total environment vol. 605-606 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	20.	Warm season precipitation signal in δ [electronic resource] by Riechelmann, Dana F C Greule, Markus Siegwolf, Rolf T W Anhäuser, Tobias Esper, Jan Keppler, Frank Producer: 20180904 In: Rapid communications in mass spectrometry : RCM vol. 31 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)

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Your search returned 27 results.