Ultrafine particles (UFP) are suspected of having significant impacts on health. However,
there have only been a limited number of studies on sources of UFP compared to larger …

The particulate matter (PM) pollution of Beijing fluctuated significantly before and after
precipitation events during the rainy period. The rainwater samples were continually …

This study examines the spatiotemporal variations of PM 2.5, PM 10, SO 2, O 3, NO, and NO
2 concentrations in Northwestern South America (NWSA). We assess the efficacy of existing …

Infiltration of outdoor-sourced particles into indoor environments in 39 schools in Barcelona
was assessed during school hours. Tracers of road traffic emissions (NO 2, Equivalent Black …

In the Western world, the SO2 concentration in ambient air dropped to low levels, but some
emission sources (eg, merchant ships) and some regions (eg, low-income countries) still …

Ozone at ground level (O 3) is an air pollutant that is formed from primary precursor gases
like nitrogen oxides (NOx) and volatile organic compounds (VOCs). It plays a significant role …

This paper presents the light-scattering properties of atmospheric aerosol particles
measured over the past decade at 28 ACTRIS observatories, which are located mainly in …

European cities have made significant progress over the last decades towards clean air.
Despite this progress, several cities are still facing acute air pollution episodes, with various …

This paper contributes to the environmental Kuznets curve (EKC) literature, which posits an
inverted U-shaped relationship between pollution and income, but from a spatial …

Observations of key gaseous trace pollutants, namely NO, NO y, CO, SO 2 and O 3,
performed at several curb, residential, industrial, background and free-troposphere sites …