Publikationen von Willi A. Brand

Quesada, C. A.; Lloyd, J.; Schwarz, M.; Patiño, S.; Baker, T. R.; Czimczik, C.; Fyllas, N. M.; Martinelli, L.; Nardoto, G. B.; Schmerler, J. et al.; Santos, A. J. B.; Hodnett, M. G.; Herrera, R.; Luizão, F. J.; Arneth, A.; Lloyd, G.; Dezzeo, N.; Hilke, I.; Kuhlmann, I.; Raessler, M.; Brand, W. A.; Geilmann, H.; Moraes, J. O.; Carvalho, F. P.; Araujo, R. N.; Chaves, J. E.; Cruz, O. F.; Pimentel, T. P.; Paiva, R.: Variations in chemical and physical properties of Amazon forest soils in relation to their genesis. Biogeosciences 7 (5), S. 1515 - 1541 (2010)

Röckmann, T.; Alvarez, C. X. G.; Walter, S.; Van Der Veen, C.; Wollny, A. G.; Gunthe, S. S.; Helas, G.; Poschl, U.; Keppler, F.; Greule, M. et al.; Brand, W. A.: Isotopic composition of H₂ from wood burning: Dependency on combustion efficiency, moisture content, and δD of local precipitation. Journal of Geophysical Research: Atmospheres 115, D17308 (2010)

Brand, W. A.: Maintaining high precision of isotope ratio analysis over extended periods of time. Isotopes in Environmental and Health Studies 45 (2), S. 135 - 149 (2009)

Brand, W. A.; Coplen, T. B.; Aerts-Bijma, A. T.; Bohlke, J. K.; Gehre, M.; Geilmann, H.; Groning, M.; Jansen, H. G.; Meijer, H. A. J.; Mroczkowski, S. J. et al.; Qi, H. P.; Soergel, K.; Stuart-Williams, H.; Weise, S. M.; Werner, R. A.: Comprehensive inter-laboratory calibration of reference materials for δ ¹⁸O versus VSMOW using various on-line high-temperature conversion techniques. Rapid Communications in Mass Spectrometry 23 (7), S. 999 - 1019 (2009)

Brand, W. A.; Geilmann, H.; Crosson, E. R.; Rella, C. W.: Cavity ring-down spectroscopy versus high-temperature conversion isotope ratio mass spectrometry; a case study on δ H2 and δ ¹⁸O of pure water samples and alcohol/water mixtures. Rapid Communications in Mass Spectrometry 23 (12), S. 1879 - 1884 (2009)

Brand, W. A.; Huang, L.; Mukai, H.; Chivulescu, A.; Richter, J.; Rothe, M.: How well do we know VPDB? Variability of δ ¹³C and δ ¹⁸O in CO₂ generated from NBS19-calcite. Rapid Communications in Mass Spectrometry 23 (6), S. 915 - 926 (2009)

Vaganov, E. A.; Schulze, E. D.; Skomarkova, M. V.; Knohl, A.; Brand, W. A.; Roscher, C.: Intra-annual variability of anatomical structure and δ ¹³C values within tree rings of spruce and pine in alpine, temperate and boreal Europe. Oecologia 161 (4), S. 729 - 745 (2009)

Vigano, I.; Röckmann, T.; Holzinger, R.; Van Dijk, A.; Keppler, F.; Greule, M.; Brand, W. A.; Geilmann, H.; Van Weelden, H.: The stable isotope signature of methane emitted from plant material under UV irradiation. Atmospheric Environment 43 (35), S. 5637 - 5646 (2009)

Clement, L. W.; Koppen, S. C. W.; Brand, W. A.; Heil, M.: Strategies of a parasite of the ant-Acacia mutualism. Behavioral Ecology and Sociobiology 62 (6), S. 953 - 962 (2008)

Hettmann, E.; Brand, W. A.; Gleixner, G.: Improved isotope ratio measurement performance in liquid chromatography/isotope ratio mass spectrometry by removing excess oxygen. Rapid Communications in Mass Spectrometry 21 (24), S. 4135 - 4141 (2007)

Coplen, T. B.; Brand, W. A.; Gehre, M.; Gröning, M.; Meijer, H. A. J.; Toman, B.; Verkouteren, R. M.: New guidelines for δ¹³C measurements. Analytical Chemistry 78 (7), S. 2439 - 2441 (2006)

Coplen, T. B.; Brand, W. A.; Gehre, M.; Gröning, M.; Meijer, H. A. J.; Toman, B.; Verkouteren, R. M.: After two decades a second anchor for the VPDB δ¹³C scale. Rapid Communications in Mass Spectrometry 20 (21), S. 3165 - 3166 (2006)

Ghosh, P.; Patecki, M.; Rothe, M.; Brand, W. A.: Calcite-CO₂ mixed into CO₂-free air: a new CO₂-in-air stable isotope reference material for the VPDB scale. Rapid Communications in Mass Spectrometry 19 (8), S. 1097 - 1119 (2005)

Knohl, A.; Werner, R. A.; Brand, W. A.; Buchmann, N.: Short-term variations in δ¹³C of ecosystem respiration reveals link between assimilation and respiration in a deciduous forest. Oecologia 142 (1), S. 70 - 82 (2005)

Schulze, B.; Wirth, C.; Linke, P.; Brand, W. A.; Kuhlmann, I.; Horna, V.; Schulze, E.-D.: Laser ablation-combustion-GC-IRMS - a new method for online analysis of intra-annual variation of δ ¹³C in tree rings. Tree Physiology 24 (11), S. 1193 - 1201 (2004)

Gehre, M.; Geilmann, H.; Richter, J.; Werner, R. A.; Brand, W. A.: Continuous flow ²H/²H and ¹⁸O/¹⁶O analysis of water samples with dual inlet precision. Rapid Communications in Mass Spectrometry 18 (22), S. 2650 - 2660 (2004)

Ghosh, P.; Brand, W. A.: The effect of N₂O on the isotopic composition of air-CO₂ samples. Rapid Communications in Mass Spectrometry 18 (16), S. 1830 - 1838 (2004)

Knohl, A.; Werner, R. A.; Geilmann, H.; Brand, W. A.: Kel-F(TM) discs improve storage time of canopy air samples in 10-mL vials for CO₂-δ¹³C analysis. Rapid Communications in Mass Spectrometry 18 (14), S. 1663 - 1665 (2004)

Seibt, U.; Brand, W. A.; Heimann, M.; Lloyd, J.; Severinghaus, J. P.; Wingate, L.: Observations of O₂:CO₂ exchange ratios during ecosystem gas exchange. Global Biogeochemical Cycles 18 (4), S. GB4024 (2004)

Sturm, P.; Leuenberger, M.; Sirignano, C.; Neubert, R. E. M.; Meijer, H. A. J.; Langenfelds, R.; Brand, W. A.; Tohjiama, Y.: Permeation of atmospheric gases through polymer O-rings used in flasks for air sampling. Journal of Geophysical Research: Atmospheres 109 (D4), D04309 (2004)