A5079930426- Air Quality and Health Impacts
- Atmospheric chemistry and aerosols
- Vehicle emissions and performance
- Air Quality Monitoring and Forecasting
- Toxic Organic Pollutants Impact
- Fermentation and Sensory Analysis
- Fire effects on ecosystems
- Plant Surface Properties and Treatments
- Air Traffic Management and Optimization
- Atmospheric Ozone and Climate
- Cyclone Separators and Fluid Dynamics
- Advanced Aircraft Design and Technologies
- nanoparticles nucleation surface interactions
- Geology and Paleoclimatology Research
- Analytical Chemistry and Chromatography
- Advanced Combustion Engine Technologies
- Radiative Heat Transfer Studies
Goethe University Frankfurt
2020-2024
Abstract. Analysing the composition of ambient ultrafine particles (UFPs) is a challenging task due to low mass and chemical complexity small particles, yet it prerequisite for identification particle sources assessment potential health risks. Here, we show molecular characterization UFPs, based on cascade impactor (Nano-MOUDI) samples that were collected at an air quality monitoring station near one Europe's largest airports, in Frankfurt, Germany. At this station,...
The molecular composition of atmospheric particulate matter (PM) in the urban environment is complex, and it remains a challenge to identify its sources formation pathways. Here, we report seasonal variation organic aerosols (OA), based on 172 PM2.5 filter samples collected Beijing, China, from February 2018 March 2019. We applied hierarchical cluster analysis (HCA) large nontarget-screening data set found strong difference OA chemical composition. Molecular fingerprints major compound...
Abstract 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 detectable in aviation-related however, their role particle formation growth remains unclear. Here we show the volatility new-particle-formation ability common synthetic jet oil, quantified oil fraction ambient particles downwind Frankfurt International Airport, Germany. We find that mass is largest...
Numerous studies have been reported that airport is an important source of ultrafine particles (UFPs, Dp ≤ 100 nm), potentially affecting the health nearby residents. This study measured UFPs at Frankfurt/Main international as well in three locations (Raunheim, Schwanheim and Riedberg) about 5 to 15 km from airport. Cascade impactors (NanoMOUDI, TSI Inc.) collected size fractions 56-100, 32-56, 18-32, 10-18 nm on aluminum substrates during different seasons, allowing observation...
Numerous studies have identified airports as key sources of ultrafine particles (UFPs – aerodynamic diameter
Wildfires can influence the earth's radiative forcing through emission of biomass-burning aerosols. To better constrain impacts wildfires on climate and understand their evolution under future scenarios, reconstructing chemical nature, assessing past variability, evaluating atmospheric composition are essential. Ice cores unique to perform such reconstructions representing archives not only events but also concurrent environmental changes. Here, we present a novel methodology for...
<p>The molecular composition of atmospheric particulate matter in the urban environment appears as extremely complex, and it remains a grand challenge to identify its sources formation pathways. In this study, we applied novel nontarget analysis HPLC/(−)ESI-HRMS measurements yearlong PM<sub>2.5</sub> filter samples from Beijing, represent all detected compounds comprehensive fingerprints. Additionally, used hierarchical clustering (HCA)...
This study describes the chemical composition and in vitro toxicity of organic fraction fine particulate matter (PM2.5) at an urban background site, which receives emissions either from Frankfurt international airport or city centre, respectively. We analysed filter extracts using ultrahigh-performance liquid chromatography coupled to a high-resolution mass spectrometer, followed by non-target analysis. In parallel, we applied bulk Microtox acetylcholinesterase-inhibition assay for testing....
Various studies identified airports as a major source of ultrafine particles (UFPs &#8211; aerodynamic diameter <100 nm), whereby little is known about their chemical composition and formation processes [1] [2] [3] [4] [5]. In previous work, we determined the organic aviation-related UFPs jet engine oils contributor [6]. Here, show nucleation particle potential oil vapors, supported by quantitative analysis full spectrum components in with diameters <56 nm. We used common synthetic...
It is a matter of fact that exposure to persistently high concentrations atmospheric particulate (PM) leads respiratory, cardiovascular, and brain dementia diseases[1]. Establishing direct link between the chemical composition PM its detrimental health effects could potentially inform policies act on sources specific harmful compounds. Unfortunately, composed thousands organic compounds, for most them, their sources, molecular structures, fates are unknown[2]. Significant progress in...
Abstract. Riming is an important growth process of graupel and hailstones in mixed-phase zones clouds, during which supercooled liquid droplets freeze on the surface ice particles by contact. Compounds dissolved cloud can remain or be released to gas phase freezing, might play role vertical redistribution these compounds atmosphere convective processes. This for estimating availability upper troposphere, where organic matter promote new particle formation growth. The amount organics...
Haze in Beijing is linked to atmospherically formed secondary organic aerosol, which has been shown be particularly harmful human health. However, the sources and formation pathways of these aerosols remain largely unknown, hindering effective pollution mitigation. Here we have quantified aerosol via direct near-molecular observations central Beijing. In winter, arises mainly from fresh solid-fuel emissions originating both combustion aqueous processes, probably involving multiphase...
Civil aviation gas turbine engines emit ultrafine particles (UFPs, diameter < 100 nm). UFPs degrade air quality because they efficiently transport their chemical content, including engine oil, into the body. Yet, little is known about how and when oil containing are formed. Results here describe thrust flight phase-dependent emission reveal particle size-dependent transfer of vaporized to with molecular level resolution. All six studied emitted UFPs. Lower volatility molecules enriched on...
Abstract. Riming is an important growth process of graupel and hailstones in the mixed-phase zones clouds, during which supercooled liquid droplets freeze on surface ice particles by contact. Compounds dissolved cloud can remain or be released to gas phase freezing, might play role vertical redistribution these compounds atmosphere convective processes. This for estimating availability upper troposphere, where organic matter promote new particle formation growth. The amount material...
Abstract. Analysing the composition of ambient ultrafine particles (UFP) is a challenging task due to low mass and chemical complexity small particles, yet it prerequisite for identification particle sources assessment potential health risks. Here, we show molecular characterization UFP, based on cascade impactor (Nano-MOUDI) samples that were collected at an air quality monitoring station nearby one Europe's largest airports in Frankfurt, Germany. At this station, particle-size-distribution...
Table S1.Overview of the sampling times (only during Frankfurt airport operating hours between 5 AM and 11 PM).Sample Start Stop Collection time [h] Dp(aer) [µm]
&lt;p&gt;Wildfires have an important role in affecting the Earth&amp;#8217;s radiative balance. Biomass burning aerosols can scatter or absorb incoming solar radiation, alter ice and snow albedo act as cloud condensation nuclei. Overall, their net contribution to forcing is negative, however this estimate has large uncertainties. To better assess impact of wildfires on climate (and vice versa), it crucial reconstruct past regional temporal variability decadal centennial...
&lt;p&gt;We present the results from a chemical characterization study of ultrafine particles (UFP), collected nearby Frankfurt International Airport where particle size distribution measurements showed high number concentrations for with diameter &lt;50 nm. Aluminium filter samples were at an air quality monitoring station in distance 4 km to airport, using 13-stage cascade impactor Nano-MOUDI (MSP Model-115). The range 0.010-0.018 &amp;#956;m, 0.018-0.032 &amp;#956;m...