Effects of adsorbents used as supports for titanium dioxide loading on photocatalytic degradation of propyzamide

Article Abstract:

Loading TiO2 particles on adsorbents significantly enhances the reaction rate of photoinduced mineralization of the typical herbicide propyzamide with the TiO2 photocatalyst. This was the result of an investigation of photodecomposition in aqueous solution of propyzamide, using naked TiO2 and TiO2-loaded adsorbent supports as photocatalysts. Aside from enhancing the rate of mineralization, the use of adsorbent supports was also found to reduce the concentration of solution-phase intermediates.

Biodegradation, Adsorption, Decomposition (Chemistry)

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Elevated accumulation of tributyltin and its breakdown products in bottlenose dolphins (Tursiops truncatus) found stranded along the U.S. Atlantic and Gulf coasts

Article Abstract:

Research shows that the concentrations of butyltin compounds (BT) found in bottlenose dolphins (Tursiops truncatus) stranded along the US Atlantic and Gulf coasts between 1989 and 1994 were higher than those reported from other locations. The higher concentrations of tributyltin compound and dibutyltin compounds, which are immunosuppressing breakdown species of the BT compound, are conjectured to have resulted to the high mortality rates reported for bottlenose dolphins on the US coastlines.

Research & Development, Scientific Research and Development Services, Hunting, trapping, game propagation, Hunting and Trapping, Porpoises, Patient outcomes, Mortality, Research institutes, Bottlenosed dolphins, Immunotoxicology

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