L1 /
15
CH3041
LONDON SMOG
• Classic “London
smog” was a product of
coal combustion which formed soot + CO
’CH’ Ü C100H85S2.1N1.5O9.5 bituminous coal
coal combustion which formed soot + CO
’CH’ Ü C100H85S2.1N1.5O9.5 bituminous coal
4’CH’ +
5O2® 4CO2 + 2H2O sufficient O2
4’CH’ + 3O2® 4CO + 2H2O insufficient O2
4’CH’ + O2® 4C + 2H2O insufficient O2
Further reduction in O2 generates Polycyclic Aromatic Hydrocarbons (PAHs)
-carcinogens
• Coal also contains significant
quantities
of FeS2 4FeS2 + 11O2® 8SO2 + 2Fe2O3
of FeS2 4FeS2 + 11O2® 8SO2 + 2Fe2O3
• SO2 reacts to form an H2SO4 aerosol mist.
• The London smog is therefore a result
of the emission of large quantities of primary pollutants esp. particulate matter.
of the emission of large quantities of primary pollutants esp. particulate matter.
