Precise measurements are integral to understanding the biogeochemical processes that govern our planet. For example, when analysing changing concentrations of gases that make up Earth’s atmosphere, such as CO2, the concentrations, and/or rate of change of the measured gas is often very small. Therefore it is imperative to pursue excellent measurement capabilities with long term accuracies, in order to produce long term (decades) high accuracy records detailing the fate of trace gases.

left to right: Jürgen Richter, Heiko Moossen, Petra Linke, Michael Rothe, Heike Geilmann

Recent Publications

1Rodionov, A., Lehndorff, E., Stremtan, C. C., Brand, W. A., Königshoven, H.-P., Amelung, W. (2019). Spatial microanalysis of natural 13C/12C abundance in environmental samples using laser ablation-isotope ratio mass spectrometry. Analytical Chemistry, 91(9), 6225-6232. doi:10.1021/acs.analchem.9b00892.
2Brewer, P. J., Kim, J. S., Lee, S., Tarasova, O. A., Viallon, J., Flores, E., Wielgosz, R. I., Shimosaka, T., Assonov, S., Allison, C. E., van der Veen, A. M. H., Hall, B., Crotwelli, A. M., Rhoderick, G. C., Hodges, J. T., Mohn, J., Zellweger, C., Moossen, H., Ebert, V., Griffith, D. W. T. (2019). Advances in reference materials and measurement techniques for greenhouse gas atmospheric observations. Metrologia, 56: 034006. doi:10.1088/1681-7575/ab1506.
3Koester, D., Villalobos, I. M. S., Jochmann, M. A., Brand, W. A., Schmidt, a. T. C. (2019). New concepts for the determination of oxidation efficiencies in liquid chromatography isotope ratio mass spectrometry. Analytical Chemistry, 91(8), 5067-5073. doi:10.1021/acs.analchem.8b05315.
4Greule, M., Moossen, H., Geilmann, H., Brand, W. A., Keppler, F. (2019). Methyl sulfates as methoxy isotopic reference materials for delta13C and delta2H measurements. Rapid Communications in Mass Spectrometry, 33(4), 343-350. doi:10.1002/rcm.8355.
5Ostrom, N. E., Gandhi, H., Coplen, T. B., Toyoda, S., Böhlke, J., Brand, W. A., Casciotti, K. L., Dyckmans, J., Giesemann, A., Mohn, J., Well, R., Yu, L., Yoshida, N. (2018). 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), 1207-1214. doi:10.1002/rcm.8157.