Unit 1
Air and air pollution (earth’s atmosphere): Regions – ozone – CFC and other chemicals – catalytic decomposition of ozone – ‘ozone hole’ formation – Air pollution due to gas emission from industries – Atmospheric aerosols – dust, combustion products, aerosol concentration and lifetimes – Automobile exhausts, smog and effects – Acid rain – chemistry of acid rain, roll of meteorology, greenhouse gases and global warming – air pollution due to jet engines.
Water and water pollution (hydrosphere): Physical and chemical properties of water – microbiological processes – carbon, nitrogen cycles – Water pollution – polluting agents – indices of pollution, heavy metal pollution and toxicity – BOD and COD determination – suspended solids – determination of other ions by photometric methods – Chemistry of anaerobic process, use of Effective Microorganisms.