TY - JOUR
T1 - MIMiX
T2 - A Multipurpose in situ Microreactor system for X-ray microspectroscopy to mimic atmospheric aerosol processing
AU - Forster, Jan David
AU - Gurk, Christian
AU - Lamneck, Mark
AU - Tong, Haijie
AU - Ditas, Florian
AU - Steimer, Sarah S.
AU - Alpert, Peter A.
AU - Ammann, Markus
AU - Raabe, Jörg
AU - Weigand, Markus
AU - Watts, Benjamin
AU - Pöschl, Ulrich
AU - Andreae, Meinrat O.
AU - Pöhlker, Christopher
N1 - Funding Information:
Acknowledgements. The authors gratefully acknowledge the support provided by the Max Planck Society (MPG). The authors thank Thomas Kennter, Frank Kunz, and the MPIC’s mechanical workshop team for their excellent work. We acknowledge the Helmholtz-Zentrum Berlin, Germany, for the allocation of the synchrotron radiation beamtime at BESSY II and the Paul Scherrer Institute, Villigen, Switzerland, for provision of synchrotron radiation beamtime at the PolLux beamline of the SLS. The PolLux endsta-tion was financed by the Federal Ministry of Education and Research (BMBF) through contracts 05KS4WE1/6 and 05KS7WE1. We thank Michael Bechtel and Blagoj Sarafimov for technical assistance during the beamtimes. We further thank David Walter and Nina Löbs for being part of our experiment team and Frank Helleis, Ralf Wittkowski, Mario Birrer, Thomas Berkemeier, Stefan Blanckart, and Berthold Kreuzburg for their support and stimulating discussions.
Publisher Copyright:
© 2020 Author(s).
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2020/7/9
Y1 - 2020/7/9
N2 - The dynamic processing of aerosols in the atmosphere is difficult to mimic under laboratory conditions, particularly on a single-particle level with high spatial and chemical resolution. Our new microreactor system for Xray microscopy facilitates observations under in situ conditions and extends the accessible parameter ranges of existing setups to very high humidities and low temperatures. With the parameter margins for pressure (180-1000 hPa), temperature ( ∼ 250K to room temperature), and relative humidity (∼ 0% to above 98 %), a wide range of tropospheric conditions is covered. Unique features are the mobile design and compact size that make the instrument applicable to different synchrotron facilities. Successful first experiments were conducted at two X-ray microscopes, MAXYMUS, located at beamline UE46 of the synchrotron BESSY II, and Pol-Lux, located at beamline X07DA of the Swiss Light Source in the Paul Scherrer Institute. Here we present the design and analytical scope of the system, along with first results from hydration-dehydration experiments on ammonium sulfate and potassium sulfate particles and the tentative observation of water ice at low temperature and high relative humidity in a secondary organic aerosol particle from isoprene oxidation.
AB - The dynamic processing of aerosols in the atmosphere is difficult to mimic under laboratory conditions, particularly on a single-particle level with high spatial and chemical resolution. Our new microreactor system for Xray microscopy facilitates observations under in situ conditions and extends the accessible parameter ranges of existing setups to very high humidities and low temperatures. With the parameter margins for pressure (180-1000 hPa), temperature ( ∼ 250K to room temperature), and relative humidity (∼ 0% to above 98 %), a wide range of tropospheric conditions is covered. Unique features are the mobile design and compact size that make the instrument applicable to different synchrotron facilities. Successful first experiments were conducted at two X-ray microscopes, MAXYMUS, located at beamline UE46 of the synchrotron BESSY II, and Pol-Lux, located at beamline X07DA of the Swiss Light Source in the Paul Scherrer Institute. Here we present the design and analytical scope of the system, along with first results from hydration-dehydration experiments on ammonium sulfate and potassium sulfate particles and the tentative observation of water ice at low temperature and high relative humidity in a secondary organic aerosol particle from isoprene oxidation.
UR - http://www.scopus.com/inward/record.url?scp=85088923314&partnerID=8YFLogxK
U2 - 10.5194/amt-13-3717-2020
DO - 10.5194/amt-13-3717-2020
M3 - Journal article
AN - SCOPUS:85088923314
SN - 1867-1381
VL - 13
SP - 3717
EP - 3729
JO - Atmospheric Measurement Techniques
JF - Atmospheric Measurement Techniques
IS - 7
ER -