Max Planck Gesellschaft

Mission

The stable isotope laboratory (BGC-IsoLab) is tasked with stable isotope analyses of a host of different sample types. Equipped with 10 isotope ratio mass spectrometers (IRMS), the BGC-IsoLab routinely analyses δ18O, δ2H, δ13C and δ15N isotopic signatures in solids, liquids and gases. For example, the BGC-IsoLab analyses the isotopic signatures of atmospheric methane and carbon dioxide to produce long term records indicating changing sources and/or sinks of these two prominent greenhouse gases. Furthermore, the BGC-IsoLab analyses the O2/N2 ratio in atmospheric samples to monitor the changing atmospheric O2 concentration. Together with the BGC-GasLab the BGC-IsoLab routinely measures 11 parameters out of 1 liter sample flasks. The BGC-IsoLab aims to provide high quality measurements in order to depict/extract the small natural isotopic variations in atmospheric time series measurements.

Easy-to-understand fact sheet (pdf)
Allgemeinverständliches Informationsblatt (pdf)

left to right: Petra Linke, Michael Rothe, Heiko Moossen, Isabell von Rein, Heike Geilmann

Recent Publications

1Simon, C., Pimentel, T. P., Monteiro, M. T. F., Candido, L. A., Gastmans, D., Geilmann, H., da Oliveira, R. C., Rocha, J. B., Pires, E., Quesada, C. A., Forsberg, B. R., Feirrera, S. J. F., da Cunha, H. B., Gleixner, G. (2021). Molecular links between whitesand ecosystems and blackwater formation in the Rio Negro watershed. Geochimica et Cosmochimica Acta, 311, 274-291. doi:10.1016/j.gca.2021.06.036.
2Komiya, S., Kondo, F., Moossen, H., Seifert, T., Schultz, U., Geilmann, H., Walter, D., Lavric, J. V. (2021). Characterizing water vapour concentration dependence of commercial cavity ring-down spectrometers for continuous on-site atmospheric water vapour isotope measurements in the tropics. Atmospheric Measurement Techniques, 14(2), 1439-1455. doi:10.5194/amt-14-1439-2021.
3Qi, H., Moossen, H., Meijer, H. A., Coplen, T. B., Aerts-Bijma, A. T., Reid, L., Geilmann, H., Richter, J., Rothe, M., Brand, W. A., Toman, B., Benefield, J., Hélie, J.-F. (2021). USGS44, a new high purity calcium carbonate reference material for delta13C measurements. Rapid Communications in Mass Spectrometry, 35(4): e9006. doi:10.1002/rcm.9006.
4Greule, M., Moossen, H., Lloyd, M. K., Geilmann, H., Brand, W. A., Eiler, J. M., Qi, H., Keppler, F. (2020). Three wood isotopic reference materials for delta2H and delta13C measurements of plant methoxy groups. Chemical Geology, 533: 119428. doi:10.1016/j.chemgeo.2019.119428.
5Pacheco-Labrador, J., El-Madany, T. S., Martin, M. P., Gonzalez-Cascon, R., Carrara, A., Moreno, G., Perez-Priego, O., Hammer, T., Moossen, H., Henkel, K., Kolle, O., Martini, D., Burchard, V., van der Tol, C., Segl, K., Reichstein, M., Migliavacca, M. (2020). Combining hyperspectral remote sensing and eddy covariance data streams for estimation of vegetation functional traits. Biogeosciences Discussions. doi:10.5194/bg-2019-501.
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