Physical state of air Solar radiation ultraviolet radiation vUV-A:320-400nm √UVB:275-320nm VUV-C: 200-275nm Meteorological factor: adjust, pollutant Air ionization
Physical state of air • Solar radiation: ultraviolet radiation ✓UV-A: 320-400nm ✓UV-B: 275-320nm ✓UV-C: 200-275nm • Meteorological factor: adjust, pollutant • Air ionization
Air ionization Light ion: 10-15 molecule Heavy ion: particulate, water drop Heavy ion/ light ion< 50
Air ionization • Light ion: 10-15 molecule • Heavy ion: particulate, water drop • Heavy ion/ light ion≤ 50
Section 2 Air pollution Definition 由于人类活动或自然过程,使得排 放到大气中物质的浓度及持续时间足以 对人的舒适感、健康,对设施或环境j 生不利影响时,称大气污染
Section 2 Air pollution Definition 由于人类活动或自然过程，使得排 放到大气中物质的浓度及持续时间足以 对人的舒适感、健康，对设施或环境产 生不利影响时，称大气污染
Pollution source(污染源) >Natural source > Anthropogenic source iMmobile a mobile
Pollution source （污染源） ➢Natural source ➢Anthropogenic source ▪Immobile ▪mobile
Anthropogenic source 1. Industry and enterprise (1)Fossil fuel burning: coal, petroleur (2) Emission from working process 2. Living cooking range and heating boiler 3. Traffic transport汽车尾气推放的污染物 4. Come from other environmental media 5. Other: untoward incident, garbage burning
Anthropogenic source 1. Industry and enterprise (1) Fossil fuel burning: coal, petroleum (2) Emission from working process 2. Living cooking range and heating boiler 3. Traffic transport 汽车尾气排放的污染物 4. Come from other environmental media 5. Other: untoward incident, garbage burning