Photocatalytic degradation of secondary alcohol ethoxylate: spectroscopic, chromatographic, and mass spectometric studies

Article Abstract:

A titanium dioxide (TiO2) particle suspension was applied in the photocatalytic degradation of secondary alcohol ethoxylate (SAE). The particles were irradiated with ultraviolet light and combined with high starting concentrations of SAE at 2000 mg/L. The concentration levels were set to match that of industrial effluents. Particle agglomeration was generated by hydrophobic product adherence to TiO2.

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Surface structures of 4-chlorocatechol adsorbed on titanium dioxide

Article Abstract:

Fourier transform infrared-ATR spectroscopy has identified a single bidentate chemisorbed species as the predominant surface structure formed from the sorption of 4-chlorocatechol to titanium dioxide (TiO2). The intermediate species is present in high amounts at a pH range of 2-10. Structural analysis of the species identified the presence of both covalent and ionic bonds.

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High-performance liquid chromatographic methods for the specific monitoring of nickel and vanadium in municipal air at the nanogram per cubic meter levels

Article Abstract:

Nickel (Ni) and Vanadium (V) in fossil fuel emissions may be used as adequate index species in developing municipal air surveillance systems. Determination of the elements is possible through a coupled scheme of reversed-phased chromatography and a spectophotometric detection, which could detect Ni down to 10 pg and V down to 30 pg in 0.1 ml injections.

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