Mechanistic and toxicity studies of the photocatalytic oxidation of microcystin-LR.
Lawton, Linda A.
Cornish, Benjamin J. P. A.
Robertson, Peter K. J.
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LIU, I., LAWTON, L., CORNISH, B. and ROBERTSON, P., 2002. Mechanistic and toxicity studies of the photocatalytic oxidation of microcystin-LR. Journal of Photochemistry and Photobiology A. Chemistry. Volume 148 (1-3), pp. 349-354
Cyanobacterial toxins present in drinking water sources pose a considerable threat to human health. Conventional water treatment systems have proven unreliable for the removal of these toxins and hence new techniques have been investigated. Previous work has shown that TiO2 photocatalysis effectively destroys microcystin-LR in aqueous solutions, however, a variety of by-products were generated. In this paper, we report a mechanistic study of the photocatalytic destruction of microcystin-LR. In particular, the toxicity by-products of the process have been studied using both brine shrimp and protein phosphatase bioassays.