Publications of W. A. Brand

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), pp. 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), pp. 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), pp. 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), p. 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)

Brooks, P. D.; Geilmann, H.; Werner, R. A.; Brand, W. A.: Improved precision of coupled δ¹³C and δ¹⁵N measurements from single samples using an elemental analyzer/isotope ratio mass spectrometer combination with a post-column sixport valve and selective CO₂ trapping; improved halide robustness of the combustion reactor using CeO₂. Rapid Communications in Mass Spectrometry 17 (16), pp. 1924 - 1926 (2003)

Dörr, M.; Käßbohrer, J.; Grunert, R.; Kreisel, G.; Brand, W. A.; Werner, R. A.; Geilmann, H.; Apfel, C.; Robl, C.; Weigand, W.: A possible prebiotic formation of ammonia from dinitrogen on iron sulfide surfaces. Angewandte Chemie International Edition 42 (13), pp. 1540 - 1543 (2003)

Ghosh, P.; Brand, W. A.: Stable isotope ratio mass spectrometry in global climate change research. International Journal of Mass Spectrometry 228 (1), pp. 1 - 33 (2003)

Qi, H. P.; Coplen, T. B.; Geilmann, H.; Brand, W. A.; Böhlke, J. K.: Two new organic reference materials for δ¹³C and δ¹⁵N measurements and a new value for the δ¹³C of NBS 22 oil. Rapid Communications in Mass Spectrometry 17 (22), pp. 2483 - 2487 (2003)

Röckmann, T.; Kaiser, J.; Brenninkmeijer, C. A. M.; Brand, W. A.: Gas chromatography/isotope-ratio mass spectrometry method for high-precision position-dependent ¹⁵N and ¹⁸O measurements of atmospheric nitrous oxide. Rapid Communications in Mass Spectrometry 17 (16), pp. 1897 - 1908 (2003)

Verkouteren, R. M.; Assonov, S.; Klinedinst, D. B.; Brand, W. A.: Isotopic metrology of carbon dioxide. II. Effects of ion source materials, conductance, emission, and accelerating voltage on dual-inlet cross contamination. Rapid Communications in Mass Spectrometry 17 (8), pp. 777 - 782 (2003)

Lloyd, J.; Langenfelds, R. L.; Francey, R. J.; Gloor, M.; Tchebakova, N. M.; Zolotoukhine, D.; Brand, W. A.; Werner, R. A.; Jordan, A.; Allison, C. A. et al.; Zrazhewske, V.; Shibistova, O.; Schulze, E.-D.: A trace-gas climatology above Zotino, central Siberia. Tellus, Series B - Chemical and Physical Meteorology 54 (5), pp. 749 - 767 (2002)

Styles, J. M.; Raupach, M. R.; Farquhar, G. D.; Kolle, O.; Lawton, K. A.; Brand, W. A.; Werner, R. A.; Jordan, A.; Schulze, E.-D.; Shibistova, O. et al.; Lloyd, J.: Soil and canopy CO₂, ¹³CO₂, H₂O and sensible heat flux partitions in a forest canopy inferred from concentration measurements. Tellus, Series B - Chemical and Physical Meteorology 54 (5), pp. 655 - 676 (2002)

Brand, W. A.; Coplen, T. B.: An interlaboratory study to test instrument performance of hydrogen dual-inlet isotope-ratio mass spectrometers. Fresenius Journal of Analytical Chemistry 370 (4), pp. 358 - 362 (2001)

Röckmann, T.; Kaiser, J.; Brenninkmeijer, C. A. M.; Brand, W. A.; Borchers, R.; Crowley, J. N.; Wollenhaupt, M.; Crutzen, P. J.: The position dependent ¹⁵N enrichment of the nitrous oxide in the stratosphere. Isotopes in Environmental and Health Studies 37, pp. 91 - 95 (2001)

Röckmann, T.; Kaiser, J.; Brenninkmeijer, C. A. M.; Crowley, J. N.; Borchers, R.; Brand, W. A.; Crutzen, P. J.: Isotopic enrichment of nitrous oxide (¹⁵N¹⁴NO, ¹⁴N¹⁵NO, ¹⁴N¹⁴N¹⁸O) in the stratosphere and in the laboratory. Journal of Geophysical Research: Atmospheres 106 (10), pp. 10403 - 10410 (2001)

Werner, R. A.; Braeunlich, S.; Brand, W. A.: On-line determination of δ ¹⁸O in silicates, carbonates and other inorganic substances: First results. Abstracts of Papers of the American Chemical Society 221, pp. 98 - GEOC (2001)

Werner, R. A.; Brand, W. A.: Referencing strategies and techniques in stable isotope ratio analysis. Rapid Communications in Mass Spectrometry 15 (7), pp. 501 - 519 (2001)

Werner, R. A.; Rothe, M.; Brand, W. A.: Extraction of CO₂ from air samples for isotopic analysis and limits to ultra high precision δ¹⁸O determination in CO₂ gas. Rapid Communications in Mass Spectrometry 15, pp. 2152 - 2167 (2001)

Hilkert, A. W.; Douthitt, C. B.; Schlüter, H. J.; Brand, W. A.: Isotope ratio monitoring gas chromatography / mass spectrometry of D/H by high temperature conversion isotope ratio mass spectrometry. Rapid Communications in Mass Spectrometry 13 (13), pp. 1226 - 1230 (1999)