1. SO2
2. NO2
3. CO
4. CO2
SO2
1. Minimata disease
2. Skeletal fluorosis
3. Black foot disease
4. Itai-itai disease
Itai-itai disease
1. 1968
2. 1974
3. 1981
4. 1986
1986
1. Dichlorophenyl trichloroethane
2. Chlorofluoroacarbons
3. CC14
4. Polyvinyl chloride (PVC).
Chlorofluoroacarbons
1. O3
2. O2
3. CO2
4. H2SO4
O3
1. NO2 and SO2
2. NH3 and SO2
3. CO and CO2
4. O3 and CO2
NO2 and SO2
1. NO
2. NO2
3. SO2
4. PAN
PAN
1. < 30 ppm
2. < 3.0 ppm
3. < 10 ppm
4. < 100 ppm
< 30 ppm
1. 1985
2. 1986
3. 1987
4. 1988
1987
1. Excess of TDS (total dissolved salts)
2. Excess of chloride
3. Methaemoglobin
4. Excess of dissolved oxygen
Methaemoglobin