science-softCon uv/vis+ photochemistry database;	www.photochemistry.org; (C) science-softCon 2019

Substance: trifluralin					Other Names: 

Formula: C13H16F3N3O4					CAS-No.: 1582-09-8

Study: photolysis, quantum yields


Authors: P. Chelme-Ayala, M. Gamal El-Dina, D.W. Smith

Title: Degradation of bromoxynil and trifluralin in natural water by direct photolysis and UV plus H2O2 advanced oxidation process

Journal/Source: Water Research, 44 (7), 2221-2228, (2010); doi:10.1016/j.watres.2009.12.045


Data: 

Energy/Wavelength range: 253.7 nm

Resolution: 

Temperature: 

Temperature dependence: 

Pressure/Concentration:

Phase: aqueous solution

pH: 4 - 10


Comments: The degradation of two pesticides, bromoxynil and trifluralin, was investigated in ultrapure and natural water solutions under 
UV light and a combination of UV and hydrogen peroxide (H2O2). The effect of pH on the photooxidation of the pesticides was also studied.
Quantum yields, in the range of 0.08–0.25 for bromoxynil and 0.12–0.72 for trifluralin, were observed in experiments using ultrapure water. 
The study also found that the UV/H2O2 process enhanced the oxidation rate in comparison to direct photolysis.

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