PhD Student in Aerosol Chemistry

• 03 July 2026 • 100% • Indefinite duration • Villigen PSI The Paul Scherrer Institute PSI is the largest research institute for natural sciences and engineering in Switzerland. We conduct cutting-edge research in the fields of future technologies, energy and climate, health innovation, and the fundamentals of nature. By realizing fundamental and applied research, we work on sustainable solutions to the major challenges faced by society, science, and the economy. PSI is committed to the training of future generations. Thus, about a quarter of our staff consists of post-doctoral students, PhD students, or apprentices. In total, PSI employs 2300 people. For the Laboratory of Atmospheric Chemistry, we are looking for a Your tasks • Perform ^14C and mass spectrometer analyses of aerosols on filters collected in Eastern Europe and Asia • Contribute to the development of new protocols for methanol extraction with the aerosol mass spectrometer • Source apportionment of organic compounds and elemental carbon for different regions • Offline measurements at PSI and the University of Bern • Publication in high-impact journals • Writing of a PhD thesis at ETH Zurich • Support for other laboratory projects Your profile • Master's degree in atmospheric sciences or related field • Laboratory experience desirable • Excellent programming skills (e.g., Python) and data analysis skills • Excellent oral and written English skills • Team spirit We offer Our institution is based on interdisciplinary, innovative, and dynamic collaboration. You will benefit from systematic on-the-job training, in addition to opportunities for personal development and our pronounced culture of professional training. If you want to reconcile work, family life, or other personal interests as well as possible, we can support you with our modern employment conditions and on-site infrastructure. For more information, please contact Dr Kaspar Dällenbach, e-mail kaspar.daellenbach@psi.ch and Prof. Dr Andre Prevot, e-mail andre.prevot@psi.ch. Please submit your application online before 05 August 2026 for the PhD student position (Index-Nr. 5503-28805). Paul Scherrer Institute, Human Resources, Emily Kulowatz, 5232 Villigen PSI, Switzerland www.psi.ch