PHOTOCATALYSIS OF TITANIUM DIOXIDE TO DECOMPOSE PESTICIDE ETHION IN TANGERINE FRUIT

S. Hassarangsee, K. Whangchai, J. Uthaibutra, S. Chantara
The reduction of Ethion, a frequently used pesticide in tangerine production was carried out by titanium dioxide (TiO2) photocatalysis with different concentrations (5, 10, 20, 40 and 60 mg ml-1) and exposure times (0, 15, 30, 45 and 60 min) under a UV lamp. To evaluate the oxidation potential by TiO2 photocatalysis effects, iodine liberation from the reaction was measured. Iodine yield, which increased with increasing concentration and reaction time, was highest at 60 mg ml-1 of TiO2 and longest at 60-min exposure time. TiO2 photocatalysis at the highest concentration was the most effective (60%) at reducing Ethion concentration with the highest rate of degradation occurring within the first 15 min (60%). When treated for alonger exposure time, the reduction of Ethion became insignificant.
Hassarangsee, S., Whangchai, K., Uthaibutra, J. and Chantara, S. (2015). PHOTOCATALYSIS OF TITANIUM DIOXIDE TO DECOMPOSE PESTICIDE ETHION IN TANGERINE FRUIT. Acta Hortic. 1088, 359-362
DOI: 10.17660/ActaHortic.2015.1088.61
https://doi.org/10.17660/ActaHortic.2015.1088.61
titanium dioxide, photocatalysis, pesticide, ethion, tangerine
English

Acta Horticulturae