Author(s)

Sarka Klementova¹, Zuzana Rabova-Tousova^2,3, Ludek Blaha³, David Kahoun¹, Petr Simek⁴, Lucie Keltnerova¹, Martin Zlamal⁵

¹Faculty of Science, University of South Bohemia, Ceske Budejovice, Czech Republic.
²Environmental Institute, Kos, Slovak Republic.
³Faculty of Science, Masaryk University, Brno, Czech Republic.
⁴Laboratory of Analytical Biochemistry, Institute of Entomology BC ASCR, Ceske Budejovice, Czech Republic.
⁵Institute of Chemical Technology, Prague, Czech Republic.

Toxicity in reaction mixtures of atrazine irradiated on immobilized TiO₂ at varying irradiation times was studied using an algal growth test on unicellular green alga Raphidocelis subcapitata and a cytotoxicity test with a RTgill-W1 cell line. The toxicity of atrazine samples to algae decreased exponentially with the time of irradiation on TiO₂ up to 3 h for both IC₅₀ and IC₂₀ values calculated for growth rate inhibition and yield. A trend to increasing variability between replicates in atrazine samples irradiated on TiO₂ for longer time periods was observed; the trend was particularly pronounced in samples irradiated for 3 and 5 hours, where the atrazine samples caused moderate stimulation in lower concentration treatments (up to 550 μg/l of the initial atrazine concentration). None of the atrazine samples showed significant cytotoxicity to the rainbow trout gill cell line (RTgill-W1).

Atrazine, Photodegradation, Toxicity Tests, Algae, Rainbow Trout Gill Cells

Klementova, S. , Rabova-Tousova, Z. , Blaha, L. , Kahoun, D. , Simek, P. , Keltnerova, L. and Zlamal, M. (2015) Photodegradation of Atrazine on TiO₂―Products Toxicity Assessment. Open Journal of Applied Sciences, 5, 14-21. doi: 10.4236/ojapps.2015.51002.