Christoph Hueglin

TL;DR: In this paper, the authors investigated and quantified low-cost sensor performance in application fields such as the extension of traditional air quality monitoring networks or the replacement of diffusion tubes and showed that the employed O3 and NO2 sensors can be accurate to 2.5 and 5.7ppb, respectively, during the first 3 months of operation.

TL;DR: In this paper, the changes of NO2 vertical tropospheric columns (VTCs) over Europe during the period 2004-2009 using a statistical model, based on a homogeneous high-quality data set of observations of the Ozone Monitoring Instrument OMI.

TL;DR: In this article, the authors analyzed data from 246 ambient air pollution monitoring sites in 102 urban areas and 34 countries in Europe between February and July 2020 and estimated that NO2 concentrations were 34% and 32% lower than expected for respective traffic and urban background locations, whereas O3 was 30% and 21% higher at the point of maximum restriction on mobility.

TL;DR: In this paper, the authors applied a recently developed filter-based offline methodology using an aerosol mass spectrometer (AMS) to investigate the regional and seasonal differences of contributing organic aerosol sources.

TL;DR: It was shown that ambient particulate matter contains compounds that are able to interact with estrogen receptors in vitro and potentially also interfere with estrogen‐regulated pathways in vivo and specific emission sources and formation processes of atmospheric xenoestrogens could not be elucidated.