Before revision: Notable groups of pollutants Many pollutants are within the following groups: Persistent organic pollutants (POPs) Particulate matter (PM) Environmental Persistent Pharmaceutical Pollutants (EPPP) Polycyclic aromatic hydrocarbons (PAHs) Volatile organic compounds (VOCs) Light pollutant Light pollution is the impact that anthropogenic light has on the visibility of the night sky.
After revision: Specificnotable groups of pollutants Many pollutants are within the following groups: Persistent organic pollutants (POPs) Particulate matter (PM) Environmental Persistent Pharmaceutical Pollutants (EPPP) Polycyclic aromatic hydrocarbons (PAHs) Volatile organic compounds (VOCs) Light pollutant Light pollution is the impact that anthropogenic light has on the visibility of the night sky.