A5051856961- Atmospheric chemistry and aerosols
- Air Quality and Health Impacts
- Vehicle emissions and performance
- Air Quality Monitoring and Forecasting
- Atmospheric aerosols and clouds
- Maritime Transport Emissions and Efficiency
- Atmospheric and Environmental Gas Dynamics
- Atmospheric Ozone and Climate
- Recycling and Waste Management Techniques
- Analytical Chemistry and Sensors
- Scientific Research and Discoveries
- Arctic and Antarctic ice dynamics
- Odor and Emission Control Technologies
- Radioactivity and Radon Measurements
- Energy and Environment Impacts
- Plant responses to elevated CO2
- Polymer Nanocomposites and Properties
- Medical Imaging Techniques and Applications
- Thermal and Kinetic Analysis
- Environmental and Sediment Control
- Catalytic Processes in Materials Science
- Environmental Policies and Emissions
- Lubricants and Their Additives
- Spectroscopy and Laser Applications
- Indoor Air Quality and Microbial Exposure
Lund University
1978-2024
Institute of Nuclear Physics
2015-2019
The aim was to identify relationships between combustion conditions, particle characteristics, and optical properties of fresh photochemically processed emissions from biomass combustion. conditions included nominal high burn rate operation individual phases a conventional wood stove. Low temperature pyrolysis upon fuel addition resulted in "tar-ball" type particles dominated by organic aerosol with an absorption Ångström exponent (AAE) 2.5-2.7 estimated Brown Carbon contributions 50-70% at...
Abstract. Aerosol particles are essential constituents of the Earth's atmosphere, impacting earth radiation balance directly by scattering and absorbing solar radiation, indirectly acting as cloud condensation nuclei. In contrast to most greenhouse gases, aerosol have short atmospheric residence times, resulting in a highly heterogeneous distribution space time. There is clear need document this variability at regional scale through observations involving, particular, situ near-surface...
Abstract. Changes in vehicle emission reduction technologies significantly affect traffic-related emissions urban areas. In many densely populated areas the amount of traffic is increasing, keeping level high or even increasing. To understand health effects emissions, both primary (direct) particulate and secondary particle formation (from gaseous precursors exhaust emissions) need to be characterized. this study, we used a comprehensive set measurements characterize Euro 5 gasoline...
The atmospheric organic aerosol is a tremendously complex system in terms of chemical content. Models generally treat the mixtures as ideal, something which has been questioned owing to model-measurement discrepancies. We used an oxidation flow reactor produce secondary (SOA) containing products biogenic (α-pinene, myrcene and isoprene) anthropogenic (m-xylene) volatile compounds (VOCs). resulting volume concentration composition was measured using scanning mobility particle sizer (SMPS)...
Abstract. With the present demand on fast and inexpensive aerosol source apportionment methods, Aethalometer model was evaluated for a full seasonal cycle (June 2014–June 2015) at rural atmospheric measurement station in southern Sweden by using radiocarbon levoglucosan measurements. By utilizing differences absorption of UV IR, apportions carbon mass into wood burning (WB) fossil fuel combustion (FF) aerosol. In this study, small modification conjunction with measurements from...
Abstract. The effect of fuel ethanol content (10, 85 and 100 %) on primary emissions subsequent secondary aerosol formation was investigated for a Euro 5 flex-fuel gasoline vehicle. Emissions were characterized during New European Driving Cycle (NEDC) using comprehensive set-up high time-resolution instruments. A detailed chemical composition the exhaust particulate matter (PM) studied soot particle mass spectrometer (SP-AMS), potential (PAM) chamber. For gaseous compounds, an increase in...
Aerosol-cloud interactions remain one of the most significant challenges in accurately estimating human-induced radiative forcing, as well projecting future climate. To address this uncertainty, establishing baseline levels natural aerosols various environments is crucial. The polar regions are ideal locations for studying due to their distances from anthropogenic influences, yet observations these relatively limited. Specifically, role oceans and sea ice controlling aerosol concentrations,...
Abstract. Ship traffic is a major source of aerosol particles, particularly near shipping lanes and harbours. In order to estimate the contribution exposure downwind lane, it important be able measure ship emission at various distances from source. We report on measurements atmospheric particles 7–20 km lane in Baltic Sea Sulfur Emission Control Area (SECA) coastal location southern Sweden during winter summer campaign. Each plume was linked individual passages using novel method based wind...
Air pollution is recognized as the most important environmental factor that adversely affects human and societal wellbeing. Due to rapid urbanization, air levels are increasing in Sub-Saharan region, but there a shortage of monitoring. Hence, exposure data use base for modelling health effect assessments also lacking. In this study, low-cost sensors were used assess PM2.5 (particulate matter) city Adama, Ethiopia. The measurements conducted during two separate 1-week periods. develop...
Abstract. Soot, or black carbon (BC), aerosol is a major climate forcer with severe health effects. The impacts depend strongly on particle number concentration, size and mixing state. This work reports two field campaigns at nearby urban rural sites, 65 km apart, in southern Sweden during late summer 2018. BC was measured using single-particle soot photometer (SP2) Aethalometers (AE33). Differences concentrations between the sites are driven primarily by local traffic emissions. Equivalent...
Abstract. In coastal areas, there is increased concern about emissions from shipping activities and the associated impact on air quality. We have assessed ship aerosol properties contribution to particulate matter (PM) nitrogen dioxide (NO2) levels by measuring plumes in ambient conditions at a site southern Sweden, within Sulfur Emission Control Area. Measurements took place during summer winter campaign, 10 km downwind of major lane. Individual ships showed large variability total particle...
Abstract. Atmospheric particulate water is ubiquitous, affecting particle transport and uptake of gases. Yet, research on the effect secondary organic aerosol (SOA) mass yields not consistent. In this study, SOA an α-pinene m-xylene mixture, at a concentration 60 µg m−3, were examined using oxidation flow reactor operated relative humidity (RH) % residence time 160 s. Wet or dried ammonium sulfate nitrate seed particles used. By varying amount surface area, underestimation formation induced...
In the strive towards a circular economy, metal waste recycling is growing industry. During process, particulate matter containing toxic and allergenic metals will be emitted to air causing unintentional exposure humans environment.In this study detailed characterization of particle emissions workplace exposures were performed, covering full size range from 10 nm µm, during three different material flows: Waste electrical electronic equipment (WEEE), scrap, cables.Both direct-reading...
Abstract. Changes in traffic systems and vehicle emission reduction technologies significantly affect traffic-related emissions urban areas. In many densely populated areas the amount of is increasing, keeping level high or even increasing. To understand health effects related emissions, both primary secondary particles that are formed atmosphere from gaseous exhaust need to be characterized. this study we used a comprehensive set measurements characterize particulate modern gasoline...
Light absorbing carbonaceous aerosols produced from combustion span over a range of physicochemical properties. Soot is the most recognized species in this category and its formation process involves gradual maturation amorphous young soot with high hydrogen-to-carbon-ratio toward mature aggregates. In work, optical response single particle photometer (SP2) to electrical mobility size selected different maturity by mini-CAST generator investigated. The results show that for specific...
A large portion of atmospheric aerosol particles consists secondary material produced by oxidation reactions. The relative importance organic (SOA) can increase with improved emission regulations. relatively simple way to study potential particle formation in the atmosphere is using flow reactors (OFRs) which simulate ageing. Here we report on first ambient OFR ageing experiment Europe, coupled scanning mobility sizer (SMPS), mass spectrometer (AMS) and proton transfer reaction (PTR)-MS...
Concentrations of aerosol particles in Poland and their sources are rarely discussed peer-reviewed journal articles despite serious air quality issues. A source apportionment carbonaceous was performed during winter at a rural background environment field site north-eastern Poland. Data were used light absorption seven wavelengths levoglucosan concentrations along existing monitoring PM2.5, organic carbon elemental (OC/EC) the Diabła Góra EMEP between January 17 March 19 intensive campaign...
Abstract. With the present demand on fast and inexpensive aerosol source apportionment methods, aethalometer model was evaluated for a full seasonal cycle (June 2014–June 2015) at rural atmospheric measurement station in southern Sweden by using radiocarbon levoglucosan measurements. By utilizing differences absorption of UV IR, apportions carbon mass into wood burning (WB) fossil fuel combustion (FF) aerosol. In this study, small modification conjunction with measurements from...
Abstract. Aerosol particles are essential constituents of the Earth’s atmosphere, impacting earth radiation balance directly by scattering and absorbing solar radiation, indirectly acting as cloud condensation nuclei. In contrast to most greenhouse gases, aerosol have short atmospheric residence time resulting in a highly heterogeneous distribution space time. There is clear need document this variability at regional scale through observations involving, particular, in-situ near-surface...
Abstract. The effect of fuel ethanol content (10 %, 85 100 %) on primary emissions and subsequent secondary aerosol formation was investigated for a EURO5 flex-fuel gasoline vehicle. Emissions were characterized during the New European Driving Cycle (NEDC) using comprehensive setup high time resolution instruments. Detailed chemical composition exhaust particulate matter (PM) studied soot particle mass spectrometer (SP-AMS) potential (PAM) chamber. For gaseous compounds, an increase in total...
Abstract. In coastal areas, there is increased concern about emissions from shipping activities and the associated impact on air quality. We have assessed ship aerosol properties contribution to particulate matter (PM) nitrogen dioxide (NO2) levels by measuring plumes in ambient conditions at a site Southern Sweden, within Sulphur Emission Control Area. Measurements took place during summer winter campaign, 10 km downwind of major lane. Individual ships showed large variability total...
Few expeditions have ventured into the Arctic to observe processes that take place in transition from winter summer. Particularly, direct observations of aerosol-cloud interactions are scarce, and comprise a large source uncertainty radiative forcing estimations Arctic. Light absorbing aerosol particles, such as black carbon (BC) incomplete combustion, exert positive upon absorption sunlight, affect clouds by serving cloud condensation nuclei (CCN). During icebreaker expedition ARTofMELT...
The interactions between aerosols and clouds are still one of the largest sources uncertainty in quantifying anthropogenic radiative forcing. To reduce this uncertainty, we must first determine baseline natural aerosol loading for different environments. In pristine hardly accessible polar regions, exact nature local remains poorly understood. It is unclear how oceans, including sea ice, control budget, influence cloud formation, phase. One critical question relates to abundance...