- Binding radicals or free electrons with a receptive (or reactive) material.
- The use of a precipitate to remove from solution by absorption or @C01339@, a large fraction of one or more @R05116@
- The removal of pollutants from the atmosphere by natural processes, including scavenging by cloud water, rainout and washout. This type of removal process is termed @P04795@ scavenging. Scavenging of airborne pollutants at the surfaces of plant, soil, etc., is termed dry deposition.