Optical atomic clocks are the most accurate measuring instruments ever built and are becoming key tools for basic and applied research, for example to test the constancy of natural constants or for height measurements in geodesy. Now, researchers at the QUEST Institute at the Physikalisch-T ... more
Physikalisch-Technische Bundesanstalt (PTB)
Rüdiger Ohlendorf, born in 1959, studied chemical engineering with a focus on instrumental analysis at the Münster University of Applied Sciences. After working at ISAS (Institute for Spectrochemistry and Applied Spectroscopy) and at Schering AG, he moved on to the Physikalisch-Technische Bundesanstalt (PTB) in Braunschweig, where he has been working in the Metrology in Chemistry department since 1995. Since 2000, Rüdiger Ohlendorf has been carrying out mass spectrometric comparison measurements both internationally at BIPM level and with reference laboratories of the German Medical Association for the PTB.
- Determination of concentrations in serum of metabolites, steroid hormones and therapeutic drugs using isotope dilution mass spectrometry (IDMS)
- Determination of concentrations and purity of synthetic peptide standards using LC/MS or amino acid analysis (AAA) with IDMS
- Gas chromatography and liquid chromatography (GC and HPLC)