GOAmazon: Atmospheric Aerosol Phase, Composition, and Water Vapor Uptake
EMSL Project ID
48856
Abstract
Atmopsheric particle phase, viscosity, and mixing state are inherently intertwined with one another. How particles change and evolve, particularly as a function of relative humidity is crucial for evaluating the aerosol life cycle. In the recent GoAmazon campaign, in collaboration with A. Laskin & B. Wang, my group collected particle samples at the T3 site as well as ZF2. This proposal seeks to combine CCSEM/EDX, STXM/NEXAFS and high resolution mass spectrometry studies to identify difference in chemical composition that could be responsible for the viscosity of field samples. In addition to microscopy substrates, durng the second intensive time period samples were collected onto filters for high resolution mass spectrometry and onto substrates for quartz crystal microbalence (QCM) measurements. Our group is pioneering studies that examine changes in phase and viscosity, by monitoring the dissipation of the QCM excitation frequency, during water vapor uptake. Characterization of the the particle types and mixing states on samples collected during the identical times as the QCM substrates will be done using the combined microscopy experiments and complimented with and mass spectrometry. Hence, the overall objective is to identify the chemical compositions responsible for particle phase as well as how phase changes with water vapor uptake.
Project Details
Project type
Large-Scale EMSL Research
Start Date
2015-10-01
End Date
2017-09-30
Status
Closed
Released Data Link
Team
Principal Investigator
Co-Investigator(s)
Team Members
Related Publications
Bateman AP, ZH Gong, T Harder, S de Sa, B Wang, P Castillo, S China, YJ Liu, R O'Brien, BB Palm, HW Shiu, G Cirino, RM Thalman, K Adachi, ML Alexander, P Artaxo, AK Bertram, PR Buseck, MK Gilles, JL Jimenez, A Laskin, A Manzi, AJ Sedlacek, III, RA Souza, J Wang, RA Zaveri, and ST Martin. 2017. "Anthropogenic influences on the physical state of submicron particulate matter over a tropical forest." Atmospheric Chemistry and Physics 17(3):1759-1773. doi:10.5194/acp-17-1759-2017
China S, B Wang, J Weis, LV Rizzo, J Brito, G Cirino, L Kovarik, P Artaxo, MK Gilles, and A Laskin. 2016. "Rupturing of biological spores as a source of secondary particles in Amazonia." Environmental Science & Technology 50(22):12179 - 12186. doi:10.1021/acs.est.6b02896
China S., S.M. Burrows, B. Wang, T. Harder, J. Weis, M. Tanarhte, and L.V. Rizzo, et al. 2018. "Fungal spores as a source of sodium salt particles in the Amazon basin." Nature Communications 9. PNNL-SA-130861. doi:10.1038/s41467-018-07066-4
Fraund MW, DQ Pham, D Bonanno, T Harder, B Wang, J Brito, S de Sa, S Carbone, S China, P Artaxo, ST Martin, C Pohlker, MO Andreae, A Laskin, MK Gilles, and R Moffet. 2017. "Elemental Mixing State of Aerosol Particles Collected in Central Amazonia during GoAmazon2014/15." Atmosphere 8(9):173. doi:10.3390/atmos8090173
Girotto G., S. China, J. Bhandari, K. Gorkowski, B. Scarnatio, T. Capek, and A. Marinoni, et al. 2018. "Fractal-like Tar Ball Aggregates from Wildfire Smoke." Environmental Science & Technology Letters 5, no. 6:360-365. PNNL-SA-132120. doi:10.1021/acs.estlett.8b00229
Wang B, DA Knopf, S China, BW Arey, T Harder, MK Gilles, and A Laskin. 2016. "Direct observation of ice nucleation events on individual atmospheric particles." Physical Chemistry Chemical Physics. PCCP 18(43):29721-29731. doi:10.1039/c6cp05253c