Pollutants Definition 1.能引起大气污染的有害物质 2.由于人类活动或自然过程,排放到 大气中的物质,对人或环境产生不利影 响,统称为- (GB6916-86)
Pollutants • Definition: 1. 能引起大气污染的有害物质 2. 由于人类活动或自然过程，排放到 大气中的物质，对人或环境产生不利影 响，统称为――（GB6916-86）
Sort of pollutants 1. Transformation Primary pollutants Secondary pollutants roper biological pollutants: pollens, spores physical pollutants chemical pollutants 3. Physical state gaseity pollutants particulate
Sort of pollutants 1. Transformation: ➢ Primary pollutants ➢ Secondary pollutants 2. Property ➢ biological pollutants: pollens, spores ➢ physical pollutants ➢ chemical pollutants 3. Physical state ➢ gaseity pollutants ➢ particulate
Gaseity pollutants Gas pollutants Co. SO. NO. NH. Hos etc Steam pollutants mercury steam
Gaseity pollutants • Gas pollutants: CO, SO2 , NO2 , NH3 , H2S etc. • Steam pollutants: mercury steam
Particulates diameter=geometric length Dustfall: Dp>10um Airborne paticulates matter: Dp< 10 um Aerodynamic diameter: Dp Sedimented particulates: Dp>100um Suspended particulates: Dps 100 um
Particulates diameter=geometric length • Dustfall: Dp>10µm • Airborne paticulates matter:Dp≤ 10 µm Aerodynamic diameter: Dp • Sedimented particulates: Dp>100µm • Suspended particulates: Dp≤ 100 µm
Suspended particulates (1) TSP (total suspended particulates ): Dpo.1-100 um, aerosol (inhalable particulates) Dp≤10um
Suspended particulates (1) TSP (total suspended particulates): Dp 0.1~ 100 µm, aerosol (2) IP (inhalable particulates) Dp≤ 10 µm