A5087077007- Atmospheric chemistry and aerosols
- Atmospheric Ozone and Climate
- Microplastics and Plastic Pollution
- Recycling and Waste Management Techniques
- Atmospheric and Environmental Gas Dynamics
- Air Quality and Health Impacts
- Ion-surface interactions and analysis
- Odor and Emission Control Technologies
- Vehicle emissions and performance
- Effects and risks of endocrine disrupting chemicals
- Isotope Analysis in Ecology
- Adventure Sports and Sensation Seeking
- Advanced Chemical Sensor Technologies
- Spectroscopy and Laser Applications
Utrecht University
2022-2024
Methylsiloxanes have gained growing attention as emerging pollutants due to their toxicity organisms. As man-made chemicals with no natural source, most research date has focused on volatile methylsiloxanes from personal care or household products and industrial processes. Here, we show that can be found in primary aerosol particles emitted by vehicles based samples collected two tunnels São Paulo, Brazil. The were analyzed thermal desorption-proton transfer reaction-mass spectrometry...
A new Continuous Flow Analysis (CFA) system coupled with Fast Liquid Chromatography - tandem Mass Spectrometry (FLC-MS/MS) has been recently developed for determining organic markers in ice cores. In this work we present an upgrade of innovative technique, optimized the detection levoglucosan cores, a crucial tracer reconstructing past fires. The involved specific optimization chromatographic and mass spectrometric parameters, allowing higher sampling resolution (down to 1 cm) simultaneous...
Organic matter in ice cores holds important climatic information, such as the prevalence of wildfires, marine algae blooms, terrestrial biosphere productivity, and antarctic sea extent. While organic compounds are specific tracers paleoclimatic records, very little is known about their transport deposition onto glaciers sheets. Factors atmospheric transport, scavenging atmosphere efficiency can have a substantial effect on amount measured snow ice. To better understand sheets, we determined...
The Proton-transfer-reaction mass spectrometer (PTR-MS) has become an important tool for real-time monitoring of volatile organic compounds (VOCs) in the atmosphere. PTR-MS is semi-quantitative untargeted analysis if transmission analytes well constrained. at different m/z determined by using commercial calibration standards. We present additional method to constrain instrument well-monitored ozone-depleting substances Ozone-depleting such as chlorofluorcarbons (CFCs)  are banned...
Proton-transfer-reaction mass spectrometry (PTR-MS) is an analytical technique used to monitor volatile organic compounds in real-time. For quantitative analysis, of interest are typically calibrated using gas standards, but PTR-MS uncalibrated if the mass-dependent transmission well defined. However, long-term measurements challenging due drift over time. Performing frequent calibrations helps, methods time-consuming and tedious, often leading instruments being under-calibrated. Here we...
Sub-micrometer-sized plastic particles (nanoplastic; NP) have been detected in a large variety of different ecosystems. They occur small quantities within complex mixtures, but robust quantification their concentration requires the development comprehensive analytical workflow to handle potential interferents. Thermal Desorption-Proton Transfer Reaction-Mass Spectrometry (TD-PTR-MS) creates necessary chemical selectivity distinguish NP signals from remaining chemicals. Nevertheless, recorded...
Proton-transfer-reaction mass spectrometry (PTR-MS) is an analytical technique used to monitor volatile organic compounds in real-time. For quantitative analysis, of interest are typically calibrated using gas standards, but PTR-MS uncalibrated if the mass-dependent transmission well defined. However, long-term measurements challenging due drift over time. Performing frequent calibrations helps, methods time-consuming and tedious, often leading instruments being under-calibrated. Here we...
<p>Thermal Desorption – Proton Transfer Reaction Mass Spectrometry (TD-PTR-MS) is a sensitive method capable of measuring nanoplastics in environmental samples. The works on the principle that different types plastic have melting points (also from many organics matrix), and they release rich (semi)volatile organic compounds signal (smells) when heated up. A gradual increase sample temperature combined with real-time, quantitative mass spectrometry (PTR-MS) allowed...
<p>Organic aerosols (OAs) have a significant effect on Earth’s climate due to their radiation scattering properties and potential be cloud condensation nuclei. OAs occur naturally from biological processes biomass burning, but anthropogenic sources such as fossil fuel residential burning pollution add the presence of organic compounds in atmosphere.</p><p>In this work we present data sampling campaign aimed at investigating...