Environmental Engineering Reference
In-Depth Information
COOH
CCl 3
CH
CH
h ν
Cl
Cl
Cl
Cl
h ν
O 2
h ν
O
Cl
Cl
C
h ν
Amine
CH
Cl
Cl
CCl
CCl
COCl
CH
Cl
Cl
Cl
Cl
Cl
Cl
Cl
Cl
Cl
COOH
C
C
C
CCl 2
CH Cl
CCl 2
Cl
p,p′-DDT by photolysis in the presence of methanol and amines, which act as sensitizers,
undergoes dehydrohalogenation (Miller and Narang 1970).
Aldrin : Aldrin, an insecticide, by photolysis in sunlight, produces photoaldrin, penta-
chloroaldrin, dieldrin, and photodieldrin (Dureja and Mukherjee 1986). Further studies of
literature also revealed that under the influence of ultraviolet light, dimers of photoaldrin
and tetrachloroaldrin are also formed.
Dieldrin : When dieldrin (an insecticide) is irradiated under sunlight, it forms pentachlo-
rodieldrin by the replacement of a chlorine atom of the vinylic group by hydrogen and
photodieldrin.
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