L1 /
17
CH3041
(oil of bay)
PHOTOCHEMISTRY
2)
Photochemistry
• Low
volatility products
such as aldehydes
and carboxylic acids form sub mm liquid
droplets, called aerosol particles, which
remain suspended in the air.
such as aldehydes
and carboxylic acids form sub mm liquid
droplets, called aerosol particles, which
remain suspended in the air.
• These aerosol
particles scatter light which
results in the reduced visibility (haze) and
the colour of the mountains.
results in the reduced visibility (haze) and
the colour of the mountains.
NO2 + hn ® NO + O
UV irradiation
eg. Blue Mountains: Forests
emit large
amounts of isoprene & various terpenes
which are attacked by O3, OH. and NO.
amounts of isoprene & various terpenes
which are attacked by O3, OH. and NO.
