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Publikationen von Willi A. Brand

Zeitschriftenartikel (89)

1.
Zeitschriftenartikel
Marks, R. G. H.; Jochmann, M. A.; Brand, W. A.; Schmidt, T. C.: How to couple LC-IRMS with HRMS─A proof-of-concept study. Analytical Chemistry 94 (6), S. 2981 - 2987 (2022)
2.
Zeitschriftenartikel
Qi, H.; Moossen, H.; Meijer, H. A.J.; Coplen, T. B.; Aerts-Bijma, A. T.; Reid, L.; Geilmann, H.; Richter, J.; Rothe, M.; Brand, W. A. et al.; Toman, B.; Benefield, J.; Hélie, J.-F.: USGS44, a new high purity calcium carbonate reference material for delta13C measurements. Rapid Communications in Mass Spectrometry 35 (4), e9006 (2021)
3.
Zeitschriftenartikel
Sperlich, P.; Moossen, H.; Geilmann, H.; Bury, S. J.; Brown, J. C.S.; Moss, R. C.; Brailsford, G. W.; Brand, W. A.: A robust method for direct calibration of isotope ratios in gases against liquid/solid reference materials, including a laboratory comparison for delta13C‐CH4. Rapid Communications in Mass Spectrometry 35 (1), e8944 (2020)
4.
Zeitschriftenartikel
Greule, M.; Moossen, H.; Lloyd, M. K.; Geilmann, H.; Brand, W. A.; Eiler, J. M.; Qi, H.; Keppler, F.: Three wood isotopic reference materials for delta2H and delta13C measurements of plant methoxy groups. Chemical Geology 533, 119428 (2020)
5.
Zeitschriftenartikel
Greule, M.; Moossen, H.; Geilmann, H.; Brand, W. A.; Keppler, F.: Methyl sulfates as methoxy isotopic reference materials for delta13C and delta2H measurements. Rapid Communications in Mass Spectrometry 33 (4), S. 343 - 350 (2019)
6.
Zeitschriftenartikel
Koester, D.; Villalobos, I. M. S.; Jochmann, M. A.; Brand, W. A.; Schmidt, a. T. C.: New concepts for the determination of oxidation efficiencies in liquid chromatography isotope ratio mass spectrometry. Analytical Chemistry 91 (8), S. 5067 - 5073 (2019)
7.
Zeitschriftenartikel
Rodionov, A.; Lehndorff, E.; Stremtan, C. C.; Brand, W. A.; Königshoven, H.-P.; Amelung, W.: Spatial microanalysis of natural 13C/12C abundance in environmental samples using laser ablation-isotope ratio mass spectrometry. Analytical Chemistry 91 (9), S. 6225 - 6232 (2019)
8.
Zeitschriftenartikel
Ostrom, N. E.; Gandhi, H.; Coplen, T. B.; Toyoda, S.; Böhlke, J.K.; Brand, W. A.; Casciotti, K. L.; Dyckmans, J.; Giesemann, A.; Mohn, J. et al.; Well, R.; Yu, L.; Yoshida, N.: Preliminary assessment of stable nitrogen and oxygen isotopic composition of USGS51 and USGS52 nitrous oxide reference gases and perspectives on calibration needs. Rapid Communications in Mass Spectrometry 32 (15), S. 1207 - 1214 (2018)
9.
Zeitschriftenartikel
Umezawa, T.; Brenninkmeijer, C. A. M.; Röckmann, T.; van der Veen, C.; Tyler, S. C.; Fujita, R.; Morimoto, S.; Aoki, S.; Sowers, T.; Schmitt, J. et al.; Bock, M.; Beck, J.; Fischer, H.; Michel, S. E.; Vaughn, B. H.; Miller, J. B.; White, J. C.; Brailsford, G.; Schaefer, H.; Sperlich, P.; Brand, W. A.; Rothe, M.; Blunier, T.; Lowry, D.; Fisher, R. E.; Nisbet, E. G.; Rice, A. L.; Bergamaschi, P.; Veidt, C.; Levin, I.: Interlaboratory comparison of delta 13C and deltaD measurements of atmospheric CH4 for combined use of data sets from different laboratories. Atmospheric Measurement Techniques 11 (2), S. 1207 - 1231 (2018)
10.
Zeitschriftenartikel
Mance, D.; Geilmann, H.; Brand, W. A.; Kewitz, T.; Kersten, H.: Changes of 2H and 18O abundances in water treated with non-thermal atmospheric pressure plasma jet. Plasma Processes and Polymers 14 (10), e1600239 (2017)
11.
Zeitschriftenartikel
Qi, H.; Coplen, T. B.; Gehre, M.; Vennemann, T. W.; Brand, W. A.; Geilmann, H.; Olack, G.; Bindeman, I. N.; Palandri, J.; Huang, L. et al.; Longstaffe, F. J.: New biotite and muscovite isotopic reference materials, USGS57 and USGS58, for δ2H measurements–A replacement for NBS 30. Chemical Geology 467, S. 89 - 99 (2017)
12.
Zeitschriftenartikel
Gehre, M.; Renpenning, J.; Geilmann, H.; Qi, H.; Coplen, T. B.; Kümmel, S.; Ivdra, N.; Brand, W. A.; Schimmelmann, A.: Optimization of on-line hydrogen stable isotope ratio measurements of halogen- and sulfur-bearing organic compounds using elemental analyzer–chromium/high-temperature conversion isotope ratio mass spectrometry (EA-Cr/HTC-IRMS). Rapid Communications in Mass Spectrometry 31 (6), S. 475 - 484 (2017)
13.
Zeitschriftenartikel
Sperlich, P.; Uitslag, N. A. M.; Richter, J. M.; Rothe, M.; Geilmann, H.; van der Veen, C.; Röckmann, T.; Blunier, T.; Brand, W. A.: Development and evaluation of a suite of isotope reference gases for methane in air. Atmospheric Measurement Techniques 9 (8), S. 3717 - 3737 (2016)
14.
Zeitschriftenartikel
Röckmann, T.; Eyer, S.; van der Veen, C.; Popa, M.-E.; Tuzson, B.; Monteil, G.; Houweling, S.; Harris, E.; Brunner, D.; Fischer, H. et al.; Zazzeri, G.; Lowry, D.; Nisbet, E. G.; Brand, W. A.; Necki, J. M.; Emmenegger, L.; Mohn, J.: In situ observations of the isotopic composition of methane at the Cabauw tall tower site. Atmospheric Chemistry and Physics 16, S. 10469 - 10487 (2016)
15.
Zeitschriftenartikel
Brand, W. A.; Rothe, M.; Sperlich, P.; Strube, M.; Wendeberg, M.: Automated simultaneous measurement of the δ13C and δ2H values of methane and the δ13C and δ18O values of carbon dioxide in flask air samples using a new multi cryo-trap/gas chromatography/isotope ratio mass spectrometry system. Rapid Communications in Mass Spectrometry 30 (13), S. 1523 - 1539 (2016)
16.
Zeitschriftenartikel
Eyer, S.; Tuzson, B.; Popa, M. E.; van der Veen, C.; Röckmann, T.; Rothe, M.; Brand, W. A.; Fisher, R.; Lowry, D.; Nisbet, E. G. et al.; Brennwald, M. S.; Harris, E.; Zellweger, C.; Emmenegger, L.; Fischer, H.; Mohn, J.: Real-time analysis of delta13C- and delta D-CH4 in ambient air with laser spectroscopy: method development and first intercomparison results. Atmospheric Measurement Techniques 9, S. 263 - 280 (2016)
17.
Zeitschriftenartikel
Meija, J.; Coplen, T. B.; Berglund, M.; Brand, W. A.; Bièvre, P. D.; Gröning, M.; Holden, N. E.; Irrgeher, J.; Loss, R. D.; Walczyk, T. et al.; Prohaska, T.: Atomic weights of the elements 2013 (IUPAC Technical Report). Pure and Applied Chemistry 88 (3), S. 265 - 291 (2016)
18.
Zeitschriftenartikel
Meija, J.; Coplen, T. B.; Berglund, M.; Brand, W. A.; Bièvre, P. D.; Gröning, M.; Holden, N. E.; Irrgeher, J.; Loss, R. D.; Walczyk, T. et al.; Prohaska, T.: Isotopic compositions of the elements 2013 (IUPAC Technical Report). Pure and Applied Chemistry 88 (3), S. 293 - 306 (2016)
19.
Zeitschriftenartikel
Mohn, J.; Gutjahr, W.; Toyoda, S.; Harris, E.; Ibraim, E.; Geilmann, H.; Schleppi, P.; Kuhn, T.; Lehmann, M. F.; Decock, C. et al.; Werner, R. A.; Yoshida, N.; Brand, W. A.: Reassessment of the NH4NO3 thermal decomposition technique for calibration of the N2O isotopic composition. Rapid Communications in Mass Spectrometry 30 (23), S. 2487 - 2496 (2016)
20.
Zeitschriftenartikel
Qi, H.; Coplen, T. B.; Mroczkowski, S. J.; Brand, W. A.; Brandes, L.; Geilmann, H.; Schimmelmann, A.: A new organic reference material, L-glutamic acid, USGS41a, for δ13C and δ15N measurements − a replacement for USGS41. Rapid Communications in Mass Spectrometry 30 (7), S. 859 - 866 (2016)
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