Chloride ions formation during degradation of organochloride compounds using TiO2 deposited on glass microspheres.
Aqueous solutions containing 200 mg/dm3 of p,p'-DDT and methoxychlor were photodegraded for 60 min in UV/TiO2/O2 system and chloride ions concentration and pH were measured. From 60 to 80% of the investigated pesticides were eliminated after treatment. Over 27% of chlorine atoms were splitted off for methoxychlor and 10% for p,p'-DDT. The experimental data suggest, that chlorine atoms were removed from the -CCl3 moiety but the chlorine atoms bound to aromatic ring were left intact at this step of photodegradation.
Dabrowski
B
B
Department of Chemical Technology, Technical University of Gdańsk, Poland. bart@chem.pg.gda.pl
Zaleska
A
A
Hupka
J
J
D002712:Chlorides / Q000737:chemistry*; D003634:DDT / Q000737:chemistry*; D007306:Insecticides / Q000737:chemistry*; D007700:Kinetics; D008731:Methoxychlor / Q000737:chemistry*; D008863:Microspheres; D014025:Titanium / Q000737:chemistry*
D002712:Chlorides; D007306:Insecticides; D003634:DDT; D014025:Titanium; D008731:Methoxychlor