TY  - JOUR
A1  - Ungeheuer, Florian
A1  - Caudillo, Lucía
A1  - Ditas, Florian
A1  - Simon, Mario
A1  - Pinxteren, Dominik van
A1  - Kılıç, Doğuşhan
A1  - Rose, Diana
A1  - Jacobi, Stefan
A1  - Kürten, Christoph Andreas
A1  - Curtius, Joachim
A1  - Vogel, Alexander L.
T1  - Nucleation of jet engine oil vapours is a large source of aviation-related ultrafine particles
T2  - Communications Earth & Environment
N2  - Large airports are a major source of ultrafine particles, which spread across densely populated residential areas, affecting air quality and human health. Jet engine lubrication oils are detectable in aviation-related ultrafine particles, however, their role in particle formation and growth remains unclear. Here we show the volatility and new-particle-formation ability of a common synthetic jet oil, and the quantified oil fraction in ambient ultrafine particles downwind of Frankfurt International Airport, Germany. We find that the oil mass fraction is largest in the smallest particles (10-18 nm) with 21% on average. Combining ambient particle-phase concentration and volatility of the jet oil compounds, we determine a lower-limit saturation ratio larger than 1 × 105 for ultra-low volatility organic compounds. This indicates that the oil is an efficient nucleation agent. Our results demonstrate that jet oil nucleation is an important mechanism that can explain the abundant observations of high number concentrations of non-refractory ultrafine particles near airports.
Y1  - 2022
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/75000
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-750008
SN  - 2662-4435
VL  - 3
IS  - 319
PB  - Springer Nature
CY  - London
ER  -