Search Results - "Grotheer, H."

Giant sponge grounds of Central Arctic seamounts are associated with extinct seep life by Morganti, T. M., Slaby, B. M., de Kluijver, A., Busch, K., Hentschel, U., Middelburg, J. J., Grotheer, H., Mollenhauer, G., Dannheim, J., Rapp, H. T., Purser, A., Boetius, A.

“…The Central Arctic Ocean is one of the most oligotrophic oceans on Earth because of its sea-ice cover and short productive season. Nonetheless, across the…”
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Burial and Origin of Permafrost‐Derived Carbon in the Nearshore Zone of the Southern Canadian Beaufort Sea by Grotheer, H., Meyer, V., Riedel, T., Pfalz, G., Mathieu, L., Hefter, J., Gentz, T., Lantuit, H., Mollenhauer, G., Fritz, M.

“…Detailed organic geochemical and carbon isotopic (δ13C and Δ14C) analyses are performed on permafrost deposits affected by coastal erosion (Herschel Island,…”
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Photoionization mass spectrometry for the investigation of combustion generated nascent nanoparticles and their relation to laser induced incandescence by Grotheer, H.-H., Wolf, K., Hoffmann, K.

“…Premixed laminar flat ethylene flames were investigated for nascent nanoparticles through photoionization mass spectrometry (PIMS). Using an atmospheric…”
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On existence of nanoparticles below the sooting threshold by Thierley, M., Grotheer, H.-H., Aigner, M., Yang, Z., Abid, A., Zhao, B., Wang, H.

“…Nanometer-sized particles were studied by photoionisation mass spectrometry and scanning mobility particle sizer in laminar premixed ethylene flames above and…”
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Comparison of Particle Size Measurements with Laser-Induced Incandescence, Mass Spectroscopy, and Scanning Mobility Particle Sizing in a Laminar Premixed Ethylene/Air Flame by Stirn, R., Baquet, T. Gonzalez, Kanjarkar, S., Meier, W., Geigle, K. P., Grotheer, H. H., Wahl, C., Aigner, M.

“…Particle size distribution functions (PSDF) and mean particle sizes have been determined in a laminar premixed ethylene/air flame with three different…”
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Continuous monitoring of ultratrace products of incomplete combustion during incineration with a novel mobile Jet-REMPI device by Oser, H., Thanner, R., Grotheer, H.-H.

“…Jet-REMPI is our modification of the well-known REMPI mass spectrometry. This modification allows for a significant sensitivity improvement over more…”
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Wavelength-resolved REMPI mass spectrometry in a hostile industrial environment, limitations and promises of the method by Nomayo, M., Thanner, R., Grotheer, H.-H.

“…The complementary REMPI (resonance-enhanced multi-photon ionisation) techniques using either a tuneable laser or a fixed-frequency laser are compared. Our…”
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The Gas-Phase Reaction of Phenoxy Radicals with Bromobenzene by Grotheer, H.-H., Louw, R.

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Deglacial export of pre-aged terrigenous carbon to the Bay of Biscay by Queiroz Alves, Eduardo, Wong, Wanyee, Hefter, Jens, Grotheer, Hendrik, Tesi, Tommaso, Gentz, Torben, Zonneveld, Karin, Mollenhauer, Gesine

“…The last deglaciation is the most recent relatively well-documented period of pronounced and fast climate warming, and, as such, it holds important information…”
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Past climate and continentality inferred from ice wedges at Batagay megaslump in the Northern Hemisphere's most continental region, Yana Highlands, interior Yakutia by Opel, Thomas, Murton, Julian B, Wetterich, Sebastian, Meyer, Hanno, Ashastina, Kseniia, Günther, Frank, Grotheer, Hendrik, Mollenhauer, Gesine, Danilov, Petr P, Boeskorov, Vasily, Savvinov, Grigoriy N, Schirrmeister, Lutz

“…Ice wedges in the Yana Highlands of interior Yakutia – the most continental region of the Northern Hemisphere – were investigated to elucidate changes in…”
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Particulate organic matter in the Lena River and its delta: from the permafrost catchment to the Arctic Ocean by Ogneva, Olga, Mollenhauer, Gesine, Juhls, Bennet, Sanders, Tina, Palmtag, Juri, Fuchs, Matthias, Grotheer, Hendrik, Mann, Paul J, Strauss, Jens

“…Rapid Arctic warming accelerates permafrost thaw, causing an additional release of terrestrial organic matter (OM) into rivers and, ultimately, after transport…”
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Lowly Chlorinated Dibenzodioxins as TEQ Indicators. A Combined Approach Using Spectroscopic Measurements with DLR Jet-REMPI and Statistical Correlations with Waste Combustor Emissions by Osera, H., Thannera, R., Grotheera, H.-H., Gullettb, B. K., Natschkec, D., Raghunathanc, K.

“…Continuous monitoring of trace gas species in incineration processes can serve two purposes: (i) monitoring precursors of polychlorinated dibenzodioxin and…”
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Occurrence and significance of phytanyl arenes across the Permian-Triassic boundary interval by Grotheer, H., Le Métayer, P., Piggott, M.J., Lindeboom, E.J., Holman, A.I., Twitchett, R.J., Grice, K.

“…•Phytanyl benzene and phytanyl toluene occur in mudstones from several key PTB sections.•Occurrence through different PTB sections is related to occurrence of…”
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Measurements in the raw gas of a full scale municipal waste incinerator using a wavelength resolved REMPI mass spectrometer by Nomayo, Matthias, Thanner, Reinhold, Pokorny, Heinz, Grotheer, Horst-Henning, Stützle, Roland

“…A resonance enhanced multiphoton ionization (REMPI) mass spectrometer consisting of a tunable laser unit (Nd:YAG pump laser and OPO) and a reflectron mass…”
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Direct measurement of the reaction CH3 + OH at ambient temperature in the pressure range 0.3-6.2 mbar by OSER, H, STOTHARD, N. D, HUMPFER, R, GROTHEER, H. H

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Non-arrhenius behavior of the reaction of hydroxymethyl radicals with molecular oxygen by Grotheer, Horst Henning, Riekert, Gottfried, Walter, Dieter, Just, Thomas

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DLR-Jet REMPI - Ultrasensitive Monitor for Process Control in Thermal Processes by Oser, Harald, Thanner, Reinhold, Grotheer, Horst-Henning

“…Process control requires sensitive and selective on‐line monitors for species concentrations. Current REMPI mass spectrometers are suitable instruments in…”
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Direct measurement of the reaction methyl + hydroxyl at ambient temperature in the pressure range 0.3-6.2 mbar by Oser, H, Stothard, N. D, Humpfer, R, Grotheer, H. H

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Absolute rate constant for the reaction of O(3P) with ethanol by GROTHEER, H.-H, NESBITT, F. L, KLEMM, R. B

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Mass spectrometry up to 1 million mass units for the simultaneous detection of primary soot and of soot precursors (nanoparticles) in flames by Grotheer, Horst-Henning, Pokorny, Heinz, Barth, Karl-Ludwig, Thierley, Marcus, Aigner, Manfred

“…A hybrid setup consisting of low pressure burner, flow reactor and photo-ionization mass spectrometer was used for the simultaneous detection of primary soot…”
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