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Photodegradation of Atrazine on TiO2―Products Toxicity Assessment

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ABSTRACT
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).
 
Cite this paper
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.
 
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