2010•Unpublished venueRequires access

Di-(2-Ethylhexyl) Phthalate Toxic Effect on Scenedesmus obliquus Evaluated by the Biomakers of Inhibition Rate and Pigment Content

Li Wang, Chenxi Wei, Xu Yang, Li-ya Tang

Abstract

The effect of Di-(2-ethylhexyl) Phthalate was investigated when alga Scenedesmus obliquus has been exposed to different concentrations (5, 10, 20, 40 and 80 mg · L-1) at 24, 48, 72 and 96 hours of exposure. Toxicity test was done by using four biomarkers including growth inhibition rate and the content of chlorophyll a, chlorophyll b and carotenoid. This study indicated that with the increase concentration of Di-(2-ethylhexyl) Phthalate, the alga inhibition rate went up in a dose dependent manner. The effect of Di-(2-ethylhexyl) Phthalate on the changes of pigment content showed the treatment groups were significantly decrease compared with control group (P-1) (p<;0.01). It indicated that DEHP has acute toxicity on S. obliquus.

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Key concepts: Scenedesmus obliquus, Pigment, Phthalate, Toxicity, Carotenoid, Chemistry, Chlorophyll, Food science